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Water: Watershed Central

Watershed Resource Inventory

General Watershed Management Information

Watershed Plan Builder - The Watershed Plan Builder provides information and tools developed by EPA to assist with the development and implementation of effective watershed management plans.

Center for Watershed Protection Exit EPA Disclaimer - Provides some basic information about land conservation and why it's important.

Watershed Planning Handbook - The Web site is intended to help communities, watershed organizations, and state, local, tribal and federal environmental agencies develop and implement watershed plans to meet water quality standards and protect water resources.

Publications for Local Governments from the Association of State Wetland Managers Exit EPA Disclaimer - A Guide for Local Governments: Wetlands and Watershed Management - Wetlands, Riparian Areas, and Floodplains.

California Flood Risks in a Changing Climate (PDF) (22 pp, 2MB, About PDF) - Presentation on predicting water resource responses to climate change.

EPA / Terms of Environment: Glossary, Abbreviations and Acronyms - Provides definitions for a variety of environmental terms.

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Funding Sources

Sustainable Finance - This EPA Web site provides information on funding sources for watershed Programs.

The Directory of Watershed Resources Exit EPA Disclaimer - An on-line, searchable database that includes information on federal, state (Oregon, Washington, Idaho, Alaska, Connecticut, Maine, Massachusetts, New Hampshire, Rhode Island, and Vermont), private, and other funding sources and assistance.

EPA Science to Achieve Results (STAR) Estuarine and Great Lakes Program (EAGLES) - This site provides basic information about the STAR program. The National Center for Environmental Research's (NCER) Science to Achieve Results or STAR program funds research grants and graduate fellowships in numerous environmental science and engineering disciplines through a competitive solicitation process and independent peer review.

Plan2Fund Exit EPA Disclaimer - This tool helps organizations determine the amount of outside funding necessary to achieve the goals and objectives of their watershed management plan.

National Center for Environmental Research - This site provides information on NCER and their mission of supporting research through grants and the presentation of research opportunities.

USEPA - Process for Applying for 319(h) Funds - A how-to guide for applying for 319(h) funds.

Grassroots Fundraising Journal Exit EPA Disclaimer - A resource for fundraising.

W.K. Kellogg Foundation Exit EPA Disclaimer - W.K. Kellog Foundation home page.

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Build Partnerships

EPA Adopt your Watershed - This on-line database can help you learn about opportunities to get involved in activities in your community, such as monitoring, cleanups, and restoration projects. You can download the Adopt Your Watershed Brochure to find out more about stewardship opportunities or add your watershed group to the searchable database.

The River Network Exit EPA Disclaimer - Visit this resource (for River Network members only) for the Directory of Funding Sources for Grassroots River and Watershed Conservation Groups. It lists private and corporate sources, as well as federal sources.

EPA / Source Water Protection - EPA Headquarters, Regional and State Contacts for Source Water Protection, Underground Injection Control, and Sole Source Aquifers.

EPA Surf Your Watershed - First, find your watershed using a geographic unit (Zip code, city name, etc) and then enter your geographic information. Once you have found your watershed using those criteria, you will be able to find citizen based groups that are active in your watershed.

National Association of Counties (NACo) Exit EPA Disclaimer - NACo's water program is designed to help counties improve water quality and water resource management, and offers a range of services to help county officials protect water resources on the local level.

USDA CSREES National Water Program Exit EPA Disclaimer - The mission of the National Water Program is to create and disseminate knowledge that insures a safe and reliable source of water of the appropriate quality to meet the needs of: Food and fiber production, Human health, use, and economic growth, and Maintenance and protection of natural environmental systems throughout the United States and its territories.

U.S. Department of the Interior / The Clean Streams Program - This program works with states and tribes to protect citizens and the environment during mining and reclamation activities.

U.S. Fish and Wildlife Service (USFWS) / Partners for Fish and Wildlife Program - This program provides technical and financial assistance to private landowners and tribes who are willing to work with USFWS and other partners to voluntarily plan, implement, and monitor habitat restoration and protection projects.

The Wildlands Project Exit EPA Disclaimer - Home page for the Wildlands Project.

EPA / About EPA / Regions - Map to locate an EPA regional office associated with your watershed.

National Resources Conservation Service - Natural Resources Conservation Service (NRCS) contact information.

EPA / Community Culture and the Environment: A Guide to Understanding a Sense of Place (PDF) (293 pp, 10MB, About PDF) - Team-building exercise to help stakeholders to get to know each other and to start getting a feeling of their values and how they use the resources in the community.

The Foundation Group / IRS 501c3 application preparation Exit EPA Disclaimer - Information on how to set up a nonprofit organization such as a 501(c)3. Having this designation is often useful in applying for funding from foundations.

Fish and Wildlife Management Offices - State, Territorial and Tribal - This page provides a list of state agencies that manage fish and wildlife.

BLM List of Offices - List of all offices of the Bureau of Land Management.

EPA / Great Lakes / Regional Collaboration: Making the Great Lakes Greater - The Great Lakes Regional Collaboration was launched to establish a coordinated strategy to further protect and restore the Great Lakes.

A Landscape Approach for Detecting and Evaluating Change in a Semi-arid Environment, San Pedro Watershed (U.S./Mexico) - The entire text of the document is presented.

Mississippi Gulf Coast Stormwater Management Toolbox - Section 2: Best Management Practices (PDF) Exit EPA Disclaimer (45 pp, 870K, About PDF) - Full document is available.

USEPA The National Listing of Fish Advisories - The database includes all available information describing state-, tribal-, and federally-issued fish consumption advisories in the United States for the 50 States, the District of Columbia, and four U.S. Territories, and in Canada for the 12 provinces and territories. The database contains information provided to EPA by the states, tribes, territories and Canada.

California Watershed Assessment Manual (Volumes I and II) Exit EPA Disclaimer - The California Watershed Assessment Manual was developed to help watershed groups, local agencies, and private landowners evaluate the condition of their watershed. The manual discusses the watershed assessment process and includes discussions of California-specific agencies, data types and sources, and environmental concerns.

A Checklist for Wildlands Network Designs Exit EPA Disclaimer - The entire text of the document is presented.

EPA / River Corridor and Wetland Restoration, Principles for the Ecological Restoration of Aquatic Resources - A list of Restoration Guiding Principles with explanations focusing not only on scientific and technical issues, but also on the importance of community perspectives and values.

USGS Science in Your Watershed - The purpose of this site is to help you find scientific information organized on a watershed basis. This information, coupled with observations and measurements made by the watershed groups, provides a powerful foundation for characterizing, assessing, analyzing, and maintaining the status and health of a watershed.

National Estuaries Projects - EPA's National Estuary Program was established by Congress in 1987 to improve the quality of estuaries of national importance.

Community-Based Watershed Management: Lessons from the National Estuary Program (NEP) - Designed for all individuals and organizations involved in watershed management, including states, tribes, local governments, and nongovernmental organizations. This document describes innovative approaches to watershed management implemented by the 28 National Estuary Programs (NEPs).

EPA / Source Water Protection - Source water assessment programs seek to characterize and protect sources of drinking water such as lakes, rivers, and other sources (e.g., groundwater aquifers). This Web site provides links to further information.

USDA Farm Service Agency - USDA's Farm Services Agency (FSA) has several programs that support watershed protection and restoration efforts [some include the Conservation Reserve Program (CRP), the Conservation Reserve Enhancement Program (CREP), the Grassland Reserve Program (GRP), and the Conservation Security Program (CSP)].

USEPA in Partnership with Tribes - USEPA's Tribal Water Quality Standards and Criteria Web area.

USDA TechReg / Technical Service Provider Registry - USDA has expanded the availability of technical assistance to landowners by encouraging the use of technical service providers (TSPs). TSPs are independent of USDA but are certified in delivering conservation technical services to landowners.

USDA Cooperative State Research, Education, and Extension Service - Extension agents conduct research, develop educational programs, and provide technical assistance on a broad range of problems from traditional agricultural management and production issues to farm business management, soil and water conservation, land and water quality, the safe use of pesticides, integrated pest management, nutrient management, models, forestry and wildlife, and commercial and consumer horticulture. This Web site will help you find your nearest Cooperative Extension office.

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Outreach and Communication

Nonpoint Source Outreach Toolbox - The Nonpoint Source (NPS) Outreach Toolbox is intended for use by state and local agencies and other organizations interested in educating the public on nonpoint source pollution or stormwater runoff. The Toolbox contains a variety of resources to help develop an effective and targeted outreach campaign.

Texas Commission on Environmental Quality (TCEQ) / Nonpoint Source Pollution: Public Education Exit EPA Disclaimer - (TCEQ) launched a nonpoint source outreach campaign in 2001 that targeted watersheds with water quality problems where the causes were known.

Polluted Runoff (Nonpoint Source Pollution) Publications and Information Resources - NPS pollution resources from USEPA and non-EPA Web sites.

Polluted Runoff (Nonpoint Source Pollution) Publications and Information Resources - A list of links to EPA and non-EPA sites with information and publications on Polluted Runoff (Nonpoint Source Pollution).

Chesapeake Bay Program: A Watershed Partnership Exit EPA Disclaimer - An overview of the program which provides a unique regional partnership that has directed the restoration of the Chesapeake Bay since 1983.

EPA / Monitoring and Assessing Water Quality / Volunteer Monitoring - Active volunteer monitorings program in your community can be valuable resources in terms of data collection and a means to educate others about watershed issues and concerns. The Web site offers more information on volunteer monitoring and a list of volunteer water monitoring program coordinators nationwide.

EPA / National Center for Environmental Assessment / Guidelines for Ecological Risk Assessment - Download EPA's Guidelines for Ecological Risk Assessment which focuses on the development of conceptual models as part of the watershed planning process. Also find related resource links.

Nonpoint Source Colorado Exit EPA Disclaimer - Find information about the Colorado Nonpoint Source Program, including Colorado NPS Outreach and Information Resources.

EPA / Getting in Step: A Guide for Conducting Watershed Outreach Campaigns (PDF) (136 pp, 3.3MB, About PDF) - This comprehensive guide will walk you through the six critical steps of outreach-defining your goals and objectives, identifying your target audience, developing appropriate messages, selecting materials and activities, distributing the messages, and conducting evaluation at each step of the way.

USDA TechReg / Technical Service Provider Registry - USDA has expanded the availability of technical assistance to landowners by encouraging the use of technical service providers (TSPs). TSPs are independent of USDA but are certified in delivering conservation technical services to landowners.

USDA Cooperative State Research, Education, and Extension Service - Extension agents conduct research, develop educational programs, and provide technical assistance on a broad range of problems from traditional agricultural management and production issues to farm business management, soil and water conservation, land and water quality, the safe use of pesticides, integrated pest management, nutrient management, models, forestry and wildlife, and commercial and consumer horticulture. This Web site will help you find your nearest Cooperative Extension office.

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Characterize the Watershed

The Nature Conservancy's Aquatic Ecosystem Classification Framework Exit EPA Disclaimer - Explains the Nature Conservancy's approach in establishing freshwater priorities across large geographic areas. This site provides access to documents, papers, GIS tools and data related to this approach.

USEPA TMDL Compendium of Tools for Watershed Assessment and TMDL Development - The Compendium of Tools for Watershed Assessment and TMDL Development supports the watershed approach by summarizing available techniques and models that assess and predict physical, chemical, and biological conditions in waterbodies. It is intended to provide watershed managers and other users with information helpful for selecting models appropriate to their needs and resources.

EPA CREM (Council for Regulatory Environmental Modeling) - Allows the user to access a wide variety of modeling documents and information.

WCS (PDF) (2 pp, 544K, About PDF) - Provide users in the Southeast (EPA Region 4) tools and an initial set of watershed data for characterizing and thereby understanding their watersheds.

Center for Watershed Protection - Smart Watershed Benchmarking Tool (PDF) Exit EPA Disclaimer (104 pp, 1.4MB, About PDF) - Download the Smart Watershed Benchmarking Tool here.

EPA Bacterial Indicator Tool - The Bacterial Indicator Tool is a spreadsheet that estimates the bacteria contribution from multiple sources.

Watershed Assessment of River Stability and Sediment Supply (WARSSS) - Details and documentation for the WARSSS information system. WARSSS is a technical procedure developed by Dr. David L. Rosgen for water quality scientists to use in evaluating streams and rivers impaired by excess sediment.

USEPA Biocriteria Technical Assistance and Guidance Documents - Provides stressor identification guidance. Based on the Stressor Identification (SI) Guidance Document, CADDIS, otherwise known as the Causal Analysis/Diagnosis Decision Information System, is an online application that uses a step-by-step guide, worksheets, and examples to help scientists and engineers find, access, organize, share, and use environmental information to evaluate causes of biological effects observed in aquatic systems such as streams, lakes, and estuaries.

USEPA Source Water Assessments - General information about Source Water Assessment Programs (SWAPs) from USEPA.

BLM National Planning - Index of BLM Resource Management Plans by State.

National Field Manual for the Collection of Water-Quality Data - Full text of the field manual is presented.

Wildland Hydrology Exit EPA Disclaimer - Here you can find guidance on conducting geomorphological assessments.

Federal Interagency Stream Corridor Restoration Working Group - Here you can find guidance on conducting geomorphological assessments.

Nonpoint Education for Municipal Officials (NEMO) Exit EPA Disclaimer - Provide information, education and assistance to local land use boards and commissions on how they can accommodate growth while protecting their natural resources and community character.

Statistical Methods in Water Resources - Full text of the document is provided.

TMDL Development from the "Bottom Up" - Part II: Using Duration Curves to Connect the Pieces (PDF) Exit EPA Disclaimer (11 pp, 549K, About PDF) - Full text of the document is provided.

EPA Environmental Science Connector - Contains a collaborative workspace and an FTP site to upload documents.

USEPA - Watershed and Water Quality Modeling Technical Support Center - This page links to the TMDL Toolbox.

Regional Vulnerability Assessment (ReVA) - EPA's Regional Vulnerability Assessment (ReVA) program is an approach to regional scale, priority-setting assessment being developed by EPA's Office of Research and Development (ORD).

EPA Global Change Research Program - Provide a portal through which scientists, resource managers, and the public can access information about our program and our partners.

USEPA Links to Other TMDL-Related Sites - Provides a list of links to other EPA TMDL-related sites (national and regional), interstate agencies, other federal agencies and other organizations.

Natural Resources Canada - Remote Sensing Tutorial Exit EPA Disclaimer - The Canada Centre for Remote Sensing is pleased to offer this tutorial on remote sensing technology and its applications. This interactive module is intended as an overview at a senior high school or early university level and touches on physics, environmental sciences, mathematics, computer sciences and geography.

EPA's Regional Vulnerability Assessment Program - The Regional Vulnerability Assessment Program document presents approaches to quantifying regional ecological vulnerabilities so that risk management activities can be targeted and prioritized.

Stream Visual Assessment Protocol (SVAP) (PDF) (42 pp, 301K, About PDF) - Full document is available.

Rapid Stream Assessment Technique (RSTAT) (PDF) Exit EPA Disclaimer (10 pp, 3.4MB, About PDF) - Full document is available.

The Conservation Technology Information Center (CTIC) / Know Your Watershed Exit EPA Disclaimer - The Conservation Technology Information Center (CTIC) has developed a series of documents to help you know your watershed. This information clearinghouse for watershed coordinators helps to ensure measurable progress toward local goals.

WATERSHEDSS Exit EPA Disclaimer - This is a tool for calculating loads using export coefficients. The system also includes a database of agricultural management practices, references on nonpoint source pollutants and sources, and an annotated bibliography of nonpoint source literature.

USGS - What is LIDAR - Basic description of LIDAR.

The Earth Observatory - Remote Sensing Reference Article - An article discussing basic information about remote sensing.

USGS - About Terrestrial Remote Sensing - Learn about what terrestrial remote sensing is, why the techniques are used and what USGS does.

NOAA's Remote Sensing Activities - Measuring Algal Blooms - NOAA uses Remote Sensing Technology to monitor and identify harmful algal blooms.

NOAA's Remote Sensing Activities - An article discussing basic remote sensing activities that NOAA pursues.

MultiSpec Exit EPA Disclaimer - A Freeware Multispectral Image Data Analysis System (Latest Release: 2-11-2010).

Biocriteria - Uses of Data - Protect Your Watershed - This article explains watershed ecological risk assessments and the role of bioassessment data.

The GAP Analysis Program - USGS home page for the Gap Analysis Program (GAP).

USEPA Biological Criteria: Technical Guidance for Survey Design and Statistical Evaluation of Biosurvey Data - Full Technical Guidance document is available in PDF format.

EPA / Monitoring and Assessing Water Quality / Rapid Bioassessment Protocols for Use in Streams and Wadeable Rivers: Periphyton, Benthic Macroinvertebrates, and Fish - This Web site provides information about the evaluation of community assemblages (e.g., macroinvertebrates, fish, periphyton)¡ªa critical measure of the overall effectiveness of habitat protection management measures.

USDA 2007 Census of Agriculture - FAQ for the Census of Agriculture.

Pennsylvania Department of Environmental Protection's eMapPA Exit EPA Disclaimer - A mapping application that displays state permit information along with various statewide data layers.

USEPA Water Discharge Permits (PCS) - Permit Compliance System (PCS) overview and links to further information.

National Pollutant Discharge Elimination System (NPDES) - NPDES stormwater program main page. This page contains technical and regulatory information about the NPDES stormwater program.

Soil Survey Geographic (SSURGO) Database - Mapping scales for SSURGO generally range from 1:12,000 to 1:63,360, making the soil maps the most detailed done by NRCS. SSURGO digitizing duplicates the original soil survey maps. The SSURGO data were migrated to the Soil Data Mart in 2004. The Soil Data Mart provides a mechanism to access our official data.

EPA Envirofacts - This website provides access to several EPA databases to provide you with information about environmental activities that may affect air, water, and land anywhere in the United States.

Data Quality Objectives tool (DQO-PRO) Exit EPA Disclaimer - DQO-PRO was designed to help specifically with the "Optimize Design" step of EPA's Data Quality Objectives (DQO) process to plan data collection efforts.

U.S. Geological Survey (USGS) - USGS offers a vast resource of information on physical processes and features such as soil and mineral resources, surface and ground water resources, topographic maps, and water quality monitoring programs.

Wastewater and Onsite Systems Programs Exit EPA Disclaimer - The National Small Flows Clearinghouse (NSFC) currently helps America's small communities and individuals solve their wastewater problems. The program provides objective information about onsite wastewater collection and treatment systems.

Smart Water Ways Exit EPA Disclaimer - What is Stormwater Runoff and Why Is it a Problem? By making little changes to your daily habits, you can help keep pollutants out of our stormwater. From Chittenden County, Vermont.

The California Natural Resource Projects Inventory Exit EPA Disclaimer - The Natural Resource Projects Inventory site provides information on thousands of conservation, mitigation and restoration projects being developed and implemented throughout California.

USEPA Publications and Information Resources - A list of links to EPA and non-EPA sites with information and publications on Polluted Runoff (Nonpoint Source Pollution).

USEPA - The Wetlands Program Across the Country - An interactive map of the United States that gives access to wetlands program information for each state and EPA region.

Symposium on Terrain Analysis for Water Resources Applications Exit EPA Disclaimer - Conference Web site with presentations and agenda available.

Canadian Community Monitoring Tools and Science Hub Exit EPA Disclaimer - The site has a directory of community-based monitoring and citizen science organizations from across Canada, as well as a rich toolkit of relevant resources, and an on-line listing of events.

Urban Design Tools / Low Impact Development Exit EPA Disclaimer - The Low Impact Development Center offers a series of fact sheets with BMP construction and maintenance cost information.

NRCS / Water Resources - Wetlands Reserve Program - Find information on the Wetlands Reserve Program and the Emergency Watershed Protection (EWP) program.

Colorado NPS Connection Exit EPA Disclaimer - The 2004 Colorado Nonpoint Source Forum provides tools for watershed planning.

Seeking Signs of Success: A guided approach to more effective watershed programs Exit EPA Disclaimer - Book available for purchase. Conservation Resource Alliance in NW Michigan.

The Clean Water Act: An Owner's Manual Exit EPA Disclaimer - River Network. This document is available for purchase.

RS Means Construction Cost Data Exit EPA Disclaimer - RS Means publishes construction cost data and updates this information annually, and contain indices for converting prices between cities and states.

Protecting the Source: Land Conservation and the Future of America's Drinking Water (PDF) Exit EPA Disclaimer (56 pp, 1,015K, About PDF) - Full document is available for download and purchase.

Source Protection Handbook: Using Land Conservation to Protect Drinking Water Supplies Exit EPA Disclaimer - Full document is available for download and purchase.

EPA Watershed Information Network - This EPA website is a gateway to a variety of tools that can be used when assessing and restoring a user's watershed.

NRCS / 2005 EQIP Signup Information and Documentation - The "cost lists" section of this Web site provides examples of cost data published to support the Environmental Quality Incentives Program (EQIP).

International Stormwater Best Management Practices (BMP) Database Exit EPA Disclaimer - This Web site provides access to performance data for more than 200 management practice studies.

EPA Windows to My Environment - The EPA Windows to My Environment (WME) site provides a wide range of federal, state, and local information about environmental conditions and features in the area selected by the user.

Nonpoint Source Outreach Toolbox - This toolbox is intended for use by state and local agencies and other organizations interested in educating the public on nonpoint source pollution or stormwater runoff. The toolbox contains a variety of resources to help develop an effective and targeted outreach campaign.

EPA / Environmental Finance Program / Guidebook of Financial Tools: Paying for Sustainable Environmental Systems - This guide was designed to enable watershed practitioners in the public and private sectors to find appropriate methods to pay for environmental protection efforts.

EPA / Watershed Academy / Catalog of Federal Funding Sources for Watershed Protection - This interactive Web site helps match watershed project needs with funding sources.

USDA Forest Inventory and Analysis National Program Exit EPA Disclaimer - This site provides information needed to assess and evaluate the nation's forests, management practices, status and trends.

USGS Chesapeake Bay Tools (COAST) - Chesapeake On-line Assessment Support Tools (COAST) has gathered four pieces of information that are currently available and will be integrated into COAST. The information includes: a. outputs from the USGS SPARROW model to better assess areas of high nutrient loading and their respective sources in different tributary strategy basins. b. an overview of ground-water contributions to streams (base-flow index). This information can be used to further assess watersheds more likely to be a rapid improvement in water quality (because more of the run-off travels through surface water vs. ground water). c. Map of overall sediment sources to the Bay (which will be replaced by SPARROW sediment model information in the future). d. Monitoring trend results for selected sites in the watershed to help assess water-quality improvements.

USGS Ground Water Information Pages - The USGS Ground Water Information Pages provide useful information on ground-water resources and activities.

Surface Water Ambient Monitoring Program (SWAMP) (PDF) (60 pp, 1.7MB, About PDF) - The Surface Water Ambient Monitoring Program (SWAMP) was proposed in a Report to the Legislature to integrate existing water quality monitoring activities of the State Water Resources Control Board and the Regional Water Quality Control Boards, and to coordinate with other monitoring programs.

U.S. Census Bureau Population Estimates - The Population Estimates Program publishes total resident population estimates and demographic components of change (births, deaths, and migration) each year. In addition to the resident population universe, it also produces population estimates for these universes: resident plus armed forces overseas, civilian, and civilian non-institutional at the national level; and civilian at the state level.

U.S. Census Bureau - The U.S. Census Bureau site provides information on the nation's population and business growth and decline.

The Western Regional Climate Center Exit EPA Disclaimer - The Western Regional Climate Center provides a map of regional climate centers. City or county stormwater management divisions might also collect rain gauge data.

USEPA National Sediment Quality Survey Database: 1980¨C1999 - This database was developed as part of "The Incidence and Severity of Sediment Contamination in Surface Waters of the United States," which is a report to Congress that identifies areas in the United States where sediment is contaminated at levels that may adversely affect aquatic life and human health. The database being released contains only the data to be used for the report and does NOT contain any interpretations of the data or recommendations based on the data.

Safe Drinking Water Information System (SDWIS) - The Safe Drinking Water Information System (SDWIS) contains information about public water systems and their violations of EPA's drinking water regulations, as reported to EPA by the states.

U.S. Census Bureau State and County QuickFacts - Quick, easy access to facts about people, business and geography.

National Resources Inventory - The National Resources Inventory provides statistical information on land use and natural resource condition surveys and trends.

USEPA Local Drinking Water Information - Look here to find links to many online water quality reports and specific information about local drinking water supplies and links to regional and state contacts for source water protection.

USEPA - What is a State Wetland Conservation Plan - A page that describes what State Wetland Conservation Plans are, their advantages and what States are currently doing.

EPA / National Management Measures to Control Nonpoint Source Pollution from Hydromodification (Draft) (PDF) (287 pp, 6.2MB, About PDF) - This document provides technical assistance to states, territories, tribes, and the public for managing hydromodification activities and reducing associated NPS pollution of surface and ground water, and it includes examples of the implementation of practices.

U.S. Army Corps of Engineers - SAMPs Exit EPA Disclaimer - Special Area Management Plans (SAMPs) are developed to analyze potential impacts at the watershed scale, to identify priority areas for preservation and potential restoration areas, and to determine the least environmentally damaging locations for proposed projects. Find out if a SAMP has been conducted in your watershed.

Watershed Advocate Toolkit Exit EPA Disclaimer - Provide quick guides to a number of issues important to watershed groups and nonprofits in general.

U.S. Department of Transportation / Federal Highway Administration - Eco-Logical: An Ecosystem Approach to Developing Infrastructure Projects - An additional resource for projects dealing with the impacts of infrastructure on watershed resources.

The Nature Conservancy Fresh Water Assessment Exit EPA Disclaimer - The Nature Conservancy Fresh Water Assessment site will provide documents and tools assisting in the identification of freshwater sustainability efforts.

The National Biological Information Infrastructure - The National Biological Information Infrastructure (NBII) is a broad, collaborative program to provide increased access to data and information on the nation's biological resources.

EPA / Polluted Runoff (Nonpoint Source Pollution) - Download guidance documents broken out by type of management measure. Draft and final manuals are available for agriculture, forestry, urban areas, marinas and recreational boating, hydromodification, and wetlands.

USEPA Air Pollution and Water Quality - Look here for more information about air deposition of pollutants.

NRCS/ Online Technical Information - The US Department of Agriculture's Natural Resources Conservation Service provide links to its Conservation Planning Handbooks on this site. Planning information includes conservation practice engineering, economic analysis, water quality, biology, and other aspects of resource management.

EPA / Wetlands - Links to laws, regulations, guidance, and scientific documents addressing wetlands; state, tribal, and local initiatives; landowner assistance and stewardship; water quality standards and section 401 certification for wetlands; monitoring and assessment; wetlands and watershed planning; restoration; education; and information about wetland programs across the country.

EPA / Septic (Onsite) Systems - EPA has developed several tools designed to help local communities manage decentralized (distributed) wastewater treatment systems. The tools include a handbook for developing or improving existing management programs, a set of guidelines that describe five generalized management models, a design guide, technology fact sheets, case studies of successful programs, a homeowners' guide, and more.

EPA's Quality System for Environmental Data and Technology - EPA uses its Quality System to manage the quality of its environmental data collection, generation, and use. The primary goal of the Quality System is to ensure that our environmental data are of sufficient quantity and quality to support the data's intended use.

USEPA - Quality Management Tools - QA Project Plans - A Quality Assurance Project Plan documents the planning, implementation, and assessment procedures for a particular project, as well as any specific quality assurance and quality control activities. It integrates all the technical and quality aspects of the project in order to provide a "blueprint" for obtaining the type and quality of environmental data and information needed for a specific decision or use. All work performed or funded by EPA that involves the acquisition of environmental data must have an approved Quality Assurance Project Plan.

Data and Method Quality Objectives - Data Quality Objectives (DQOs) and Measurement Quality Objectives (MQOs) are, or should be, the foundation of all monitoring studies. Photo of Ulao River DQOs and MQOs define the objectives for the monitoring and the data quality needed to respond to those objectives.

Webcasts and Workshops Exit EPA Disclaimer - Sign up for wetland webcasts and workshops here.

Stormwater Manager's Resource Center Exit EPA Disclaimer - Located at the Center for Watershed Protection, this center provides technical assistance for stormwater management. The Center for Watershed Protection also provides a checklist to evaluate community needs and model ordinances.

Water Quality Data Elements - The broad metadata categories which characterize all types of data: who, what, when, where, why, and how are being used to develop a modular* WQDE approach that can be tailored to specific types of data.

Urban Subwatershed Restoration Manual Series Exit EPA Disclaimer - This series of 11 manuals was written by the Center for Watershed Protection to organize the enormous amount of information needed to restore small urban watersheds into a format that can easily be accessed by watershed groups, municipal staff, environmental consultants and other users.

California Stormwater Best Management Practice (BMP) Handbooks Exit EPA Disclaimer - An example of a BMP handbook/guidance document for in-state use.

USFWS Endangered Species Program Exit EPA Disclaimer - Provides information about endangered species at national, state and local levels.

USEPA Monitoring and Assessing Water Quality 305(b) Report - Provides information about 305 (b) reports by state.

USEPA NPS Pollution Homepage - Provides general information about NPS Pollution, along with data sets and outreach materials.

USEPA - State, Tribal and Local Wetlands Initiatives - A page that categorizes what states, tribes and localities do, what is currently being done and presents financial assistance information.

USEPA Integrating Water and Waste Programs to Restore Watersheds: A Guide for Federal and State Project Managers - The purpose of this manual is to enhance coordination across U.S. EPA, State, and local waste and water programs to streamline requirements, satisfy multiple objectives, tap into a variety of funding sources, and implement restoration activities more efficiently, with a goal of showing measurable results.

USEPA NSCEP/NEPIS - EPA's Gateway to Free Digital and Paper Publications - This is EPA's premiere publications resource. More than 7,000 in stock and 26,000 digital titles are available FREE of charge to search and retrieve, download, print and/or order from the National Service Center for Environmental Publications (NSCEP).

TMDL Database - This TMDL page provides a summary of the TMDL programs for EPA Regions and the states by clicking on an interactive map.

EPA Reach File References - The EPA Reach Files are a series of national hydrologic databases that uniquely identify and interconnect the stream segments or "reaches" that compose the country's surface water drainage system. Here you can find references documenting the content, production, and history of the Reach Files.

USEPA 2004 Contaminated Sediment Report to Congress - The Water Resources Development Act of 1992 directs us to assess the quality of aquatic sediments in the United States and to report our findings to the Congress. This report identifies areas in the United States where the sediment may be contaminated at potentially harmful levels.

EPA Watershed Projects Inventory Exit EPA Disclaimer - This site provides information on past, current and future resource-based projects that handles multiple resource issues.

Hydrogeomorphic Approach for Assessing Wetland Functions (HGM Approach) Exit EPA Disclaimer - The Hydrogeomorphic Approach (HGM Approach) is a method to assess the functional condition of a specific wetland referenced to data collected from wetlands across a range of physical conditions.

Endangered Ecosystems of the United States: A Preliminary Assessment of Loss and Degradation - Full research paper.

EPA's Water Quality Standards home page - Water Quality Standards consists of designated uses, water quality criteria, an antidegradation policy, and general policies as set forth by the water quality-based control program mandated by the Clean Water Act.

State Wildlife Action Plans Exit EPA Disclaimer - State comprehensive wildlife conservation strategies (also known as wildlife action plans) assess the condition of each state's wildlife and habitats, identify the problems they face, and outline the actions that are needed to be conserve them over the long term before they become more rare and more costly to protect. State fish and wildlife agencies have developed these plans by working with a broad array of partners, including scientists, sportsmen, conservationists, and members of the community.

NOAA's Earth System Research Lab - Optical Remote Sensing Division - The Optical Remote Sensing Division (formerly the Advanced Technique Development Division) of ETL aims to develop and apply new atmospheric remote sensing technology and techniques that will enhance NOAA's operational and research missions.

NOAA's National Climatic Data Center - The NCDC data include information such as precipitation, wind speed, temperature, and snow and ice cover at multiple stations throughout the United States. Stations within or near a watershed can be found in the NCDC database by using a variety of search tools, and data are provided (for a fee) in a raw format that can be read by a word processing or spreadsheet program. County-level stormwater management offices might also collect rain gage data.

USGS - Fluvial Sediment - Links to USGS sediment sampling techniques can be found here.

USGS Great Lakes Science Center - Redirects to the Sitemap for the Great Lakes Science Center.

National Agricultural Statistics Service - The major purpose of this paper is to counter some common misconceptions related to the use of remotely sensed data for crop condition monitoring and crop yield forecasting and estimation.

NatureServe Publications Exit EPA Disclaimer - A NatureServe hosted publications: Rivers of Life (Executive Summary).

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Databases

EPA STORET Database - The EPA STORET Database maintains two data management systems containing water quality information for the nation's waters: the Legacy Data Center (LDC), and STORET.

USGS Water Data for the Nation - Provides data on surface water, ground water and water quality for areas across the nation.

SI 101 - The Stressor Identification (SI) Process - This course covers the principles of the stressor identification process, which is used when unknown causes of biological impairment are encountered and when it is necessary to convince a skeptical audience. Recommended for scientists, managers and others involved in 305(b) assessments, 303(d) listings, TMDLs or other water body investigations.

Physical Stream Assessment: A Review of Selected Protocols for Use in the Clean Water Act Section 404 Program (PDF) (212 pp, 1.2MB, About PDF) - The entire text of the document is presented.

USEPA Monitoring and Assessing Water Quality - Here you can access water quality data from state, federal and local agencies, universities, dischargers and volunteers.

Maryland Biological Stream Survey Sampling Manual (PDF) Exit EPA Disclaimer (83 pp, 1.1MB, About PDF) - The entire text of the document is presented.

Field Methods for Measurement of Fluvial Sediment (PDF) (97 pp, 154.2MB, About PDF) - The entire text of the document is presented.

Nutrient Water Quality Criteria - The National Nutrient Database stores and analyzes nutrient water quality data and serves as an information resource for states, tribes, and others in establishing scientifically defensible numeric nutrient criteria.

Global Earth Observation System of Systems (GEOSS) - GEOSS is envisioned as a large national and international cooperative effort to bring together existing and new hardware and software, making it all compatible in order to supply data and information at no cost.

California Environmental Data Exchange Network (CEDEN) - Allow the exchange of water and environmental data between groups and to provide access to the public.

FEMA Map Service Center - Look here for floodplain maps of your watershed.

AVIRIS Home Page - Here you can learn more about the AVIRIS imaging spectrometer.

Pacific Northwest Water Quality Data Exchange - This site provides assistance for the Pacific Northwest so that the states in the region are able to share data more efficiently and effectively.

Water Quality Standard Database (WQSDB) - Provides access to EPA and state water quality standards (WQS) information in text, tables, and maps.

National Atmospheric Deposition Program Exit EPA Disclaimer - Look here for more information about air deposition of pollutants.

USGS Instanteous Data Archive - United States Geological Survey has collected continuous stage, discharge, and other instantaneous time-series data on the nations rivers and streams.

USDA NRCS Soil Data Mart - The Soil Data Mart allows you to determine where soil tabular and spatial data is available for your watershed and download what data that you need.

EPA Beach Watch - Provides information on the nation's beaches.

National Small Flows Clearinghouse Exit EPA Disclaimer - The National Small Flows Clearinghouse tool provides information, resources and assistance for wastewater systems.

Goddard Space Center Global Change Master Directory - Enable the scientific community to discover and access Earth science data and services through distributed, integrated information technology systems.

EPA Assessment Database - Provides user-friendly data entry forms and automates the production of reports that States submit to EPA through the 305(b) process.

USEPA Office of Water Programs - Lists the Office of Water Program databases that have been or will soon be linked to WATERS. You are able to check on the status of data availability here.

Suspended-Sediment Database - Presents daily values of suspended sediment and ancillary data available from USGS.

EPA Environmental Monitoring & Assessment Program - EMAP aims to advance the science of ecological monitoring and ecological risk assessment, guide national monitoring with improved scientific understanding of ecosystem integrity and dynamics, and demonstrate multi-agency monitoring through large regional projects.

EPA NLFWA - The National List of Fish and Wildlife Advisories database contains information on toxic contaminants provided to EPA by the states, tribes, territories and Canada.

EPA NAD (National Assessment Database) - Provides a summary of state-reported water quality information and allows the user to view assessments of individual waterbodies.

EPA WATERS (Watershed Assessment, Tracking & Environmental Results) - WATERS (Watershed Assessment, Tracking & Environmental ResultS) unites water quality information that was previously available only from several independent and unconnected databases. EPA WATERS gathers water quality information to address public concerns such as watershed health and water quality and safety.

Mid-Atlantic Water - TMDL Reports - This Mid-Atlantic Water site provides information on TMDLs found in EPA's region 3. The system searches the national TMDL Database.

Flow Restoration Tools Exit EPA Disclaimer - Case studies, reports and other citations from around the world are summarized.

Natural Resource Project Inventory (NRPI) Exit EPA Disclaimer - The NRPI provides information on thousands of conservation, mitigation and restoration projects being developed and implemented throughout California.

National Water-Quality Assessment Program (NAWQA) - The USGS implemented the National Water-Quality Assessment (NAWQA) Program in 1991 to develop long-term consistent and comparable information on streams, rivers, ground water, and aquatic systems in support of national, regional, State, and local information needs and decisions related to water-quality management and policy.

Nature Conservancy Fresh Water Assessment Exit EPA Disclaimer - Documents and tools for focusing freshwater efforts across large geographic areas.

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GIS Data

U.S. General Soil Map (STATSGO) - STATSGO provides spatial and tabular soil data.

Tutorial for MapWindow GIS - Open source GIS tutorials. This GIS is being used by EPA in the BASINS modeling framework.

Learn How to Use GIS - ESRI Inc. Exit EPA Disclaimer - Find a GIS certification or degree program, listen to ESRI podcasts or teach GIS using the resources you find here.

County Water Quality Issue Brief: Using GIS Tools to Link Land Use Decisions to Water Resource Protection Exit EPA Disclaimer - Full document is available.

SERVIR Exit EPA Disclaimer - SERVIR addresses the nine societal benefit areas of the Global Earth Observation System of Systems (GEOSS): disasters, ecosystems, biodiversity, weather, water, climate, oceans, health, agriculture, and energy.

USEPA - NLCD Classification Schemes (Level II) - A list and definitions for NLCD data.

RST - The Remote Sensing Tutorial - An excellent and wide-ranging review of remote sensing can be found at this site.

USFWS Wetlands Geodatabase - Access national wetlands digital data here. Use the wetlands mapper provided by USFWS, download the wetlands digital data or view wetlands data layers with Google Earth.

NOAA Coastal Remote Sensing (CRS) Program - Access the CSC LIDAR database through this page.

NRCS Geospatial Data Gateway - Provides easy and consistent access to natural resource data.

NHDPlus/National Elevation Dataset (NED)/National Hydrography Dataset (NHD)/National Land Cover Dataset (NLCD)/Watershed Boundary Dataset (WBD) Exit EPA Disclaimer - NHDPlus is an integrated suite of application-ready geospatial data sets that incorporate many of the best features of the National Hydrography Dataset (NHD), the National Elevation Dataset (NED), the National Land Cover Dataset (NLCD), and the Watershed Boundary Dataset (WBD). NHDPlus has been used to enhance the EPA WATERS application.

GRASS- Open Source GIS Exit EPA Disclaimer - This is a Geographic Information System (GIS) used for geospatial data management and analysis, image processing, graphics/maps production, spatial modeling, and visualization.

USGS Digital Elevation Model (DEM) Information - The USGS DEM assists in the generation of three-dimensional graphics displaying terrain slope, aspect (direction of slope), and terrain profiles between selected points. It is often used by GIS applications to delineate watersheds.

National Wetlands Inventory (NWI) - The NWI produces and provides information on the characteristics, extent, and status of the Nation's wetlands and deepwater habitats and other wildlife habitats.

USGS Seamless Data Distribution System - NED data can be downloaded from USGS's Seamless Data Distribution System for use in watershed delineation.

STARMAP (Space-Time Aquatic Resources Modeling and Analysis Program) Exit EPA Disclaimer - Consists of three tools that generate a RRQRR sequence raster, filter the RRQRR sequence raster against a probability raster, and generate sample site locations.

USACE Digital Data Mapping Tool Exit EPA Disclaimer - The CorpsMap Map Browser is an interactive map that provides visual access to the CorpsMap datasets.

Region 4 303d listing and TMDL tracking tool Exit EPA Disclaimer - The 303d listing and TMDL tracking tool is a GIS, 303d, and monitoring database for Region 4. Users are able to obtain TMDL report summaries.

EnviroMapper for Water - EnviroMapper for Water provides a Web-based mapping connection to a wealth of water data. It can be used to view and map data such as the designated uses assigned to local waters by state agencies, waters that are impaired and do not support their assigned uses, beach closures, and location of dischargers. Water quality data include STORET data, National Estuary Program (NEP) study areas, and locations of nonpoint source projects.

ESRI Exit EPA Disclaimer - ESRI is a software, research and development, and consulting company dedicated to GIS. Its software includes ArcInfo, ArcGIS, and ArcView.

USGS Seamless Data Distribution System, Earth Resources Observation and Science - NED data can be downloaded from USGS's Seamless Data Distribution System for use in watershed delineation.

Canadian Geospatial Data Portal Exit EPA Disclaimer - GeoConnections helps decision-makers use online location-based (or "geospatial") information, such as maps and satellite images, to tackle some of Canada's most pressing challenges.

Digital Watershed Exit EPA Disclaimer - It is a user-friendly version of EPA's BASINS software, which contains several geographically linked data bases including such facilities as treatment plants, toxic sites, etc.

USGS Geographic Data Download - A source of Digital Elevation data from USGS. Many different formats are available.

Bureau of Land Management Geospatial Data Clearinghouse - BLM established the GeoSpatial Data Clearinghouse as part of the FGDC Geospatial Data Clearinghouse Network. BLM data can be searched through the FGDC Web site or the BLM clearinghouse Web site. The BLM Geospatial Data Clearinghouse contains only geospatial data held by the BLM, and it can be searched by state or by keyword (e.g., geology, minerals, vegetation, fire).

California Digital Conservation Atlas - Online mapping services and data sharing from California resources.

USGS Greenness of the Conterminous US - Since 1989, the USGS EROS Data Center has been mapping the vegetation condition of the conterminous United States (lower 48 states) using satellite information. This page explains more about the work of the EROS Data Center.

National Geospatial Data Clearinghouse - Sponsored by the Federal Geographic Data Committee (FGDC), the Clearinghouse offers a collection of more than 250 spatial data servers that can be searched through a single interface based on their descriptions or metadata.

University of Arkansas Libraries and the Center for Advanced Spatial Technologies (CAST) Exit EPA Disclaimer - Starting the Hunt: Guide to Mostly On-Line and Mostly Free U.S. Geospatial and Attribute Data, written by Stephan Pollard and sponsored by the University of Arkansas Libraries and CAST, provides a compilation of links to online GIS data, categorized into two broad classifications-State and Local Aggregations and National Aggregations.

U.S. Department of the Interior, National Atlas of the United States, Map Layers Warehouse - The Atlas is a largely digital update of a large, bound collection of paper maps that was published in 1970. It provides high-quality, small-scale maps, as well as authoritative national geospatial and geostatistical datasets. Examples of digital geospatial data are soils, county boundaries, volcanoes, and watersheds; examples of geostatistical data are crime patterns, population distribution, and incidence of disease.

State GIS Clearinghouse Directory Exit EPA Disclaimer - The Directory provides a list of state GIS agencies, groups, and clearinghouses.

Topozone Exit EPA Disclaimer - TopoZone provides digital topographic maps, aerial photographs, and related mapping information to the professional and outdoor recreation communities. The new TopoZone Pro application will provide shaded relief maps, 1-meter aerial photos and detailed street maps.

U.S. Department of the Interior / The Clean Streams Program - Topographic maps use of contour lines to portray the shape and elevation of the land along with rendering the three-dimensional ups and downs of the terrain on a two-dimensional surface. Identify watershed boundaries more precisely by using a topographic map.

Geography Network Exit EPA Disclaimer  - This site provides links to local, state, and federal GIS sources and provide query engines to identify available GIS data by geographic location or content.

GeoCommunicator - National Integrated Land System (NILS) - The Land and Mineral Use Records web site is an Internet mapping application within NILS' GeoCommunicator. It allows users to search, locate, and map the BLM's land and mineral use authorizations and mining claims on public lands throughout the United States.

Finding and Ordering USGS Topographic Maps - This page focuses on traditional paper maps, but information about digital map data can also be found at some of these sources. It includes information on sales by phone, mail and e-mail and provides an online search and order service.

USDA Cropland Data Layer - Download the Cropland Data Layer.

Status Graphics: Availability of USGS Geospatial Data - This link will lead customers to online status graphics, or map-based images, depicting the current availability of selected USGS Digital Cartographic Data products such as DOQ, DRG, DEM, DLG and NHD.

Census 2000 TIGER/Line Data - This site provides access to general TIGER information as well as downloading GIS files and other TIGER-related products.

IDLMAS (PDF) (5 pp, 127K, About PDF) - IDLMAS provides a graphical user interface for selecting appropriate applications and for easy input of data and parameters in GIS.

USGS's Earth Resources Observation Systems (EROS) Data Center - EROS Data Center is a data management, systems development, and research field center for the USGS National Mapping Division. The EROS Web site contains aerial, topographic, elevation, satellite, and land cover data and information.

GIS-Based Phosphorus Loading Model (GISPLM) Exit EPA Disclaimer - Flows and phosphorus loads are evaluated in the GISPLM using watershed features extracted from GIS, climatologic data, and other local data. Phosphorus sources include runoff, farm animal populations, and point discharges.

Elevation Derivatives for National Applications - EDNA is a multi-layered database derived from a version of the National Elevation Dataset (NED), which has been hydrologically conditioned for improved hydrologic flow representation. The seamless EDNA database provides 30 meters resolution raster and vector data layers free of charge.

USGS Digital Raster Graphics - At this site, you can obtain Digital Raster Graphics (DRGs) from USGS Business Partners, USGS Data Partners and from the USGS itself.

California Spatial Information Library - An online database of GIS data for the State of California.

West Virginia Department of Environmental Protection Internet Mapping - An online database of GIS data for the State of West Virginia.

1992 National Land Cover Data (NLCD) - NLCD data can be downloaded from this site.

USDA NRCS Watershed Boundary Data Maps - Offered at this site are watershed boundary dataset maps by State - both JPG and PDF files are available. Available interactive maps include the watershed boundary dataset status and a status map for only the certified Watershed Boundary Datasets by state.

The GIS Data Depot Exit EPA Disclaimer - Numerous data holdings are available for free download. Topics covered include FEMA Flood data, USGS DEMs, USGS DRGs and more.

USDA NRCS Watershed Boundary Data Set - The goal of the watershed boundary data set initiative is to provide a hydrologically correct, seamless and consistent national GIS database at a scale of 1:24,000, which has been extensively reviewed and matches to a minimum the USGS topographical 7.5 minute quads. This data set is routinely updated with the latest watershed boundary data.

Synthetic Aperture Radar - Information on synthetic aperture radar from Sandia National Laboratories.

MRLC Consortium - Home Page for the Multi-Resolution Land Characteristics Consortium.

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Models

BASINS - A multi-purpose environmental analysis system that integrates a geographical information system (GIS), access to national geospatial, meteorologic, hydrologic, and water quality monitoring data, and state-of-the-art environmental assessment and modeling tools into one convenient package.

AVGWLF Exit EPA Disclaimer - Best Management Practices document is available.

Soil & Water Assessment Tool (SWAT) Exit EPA Disclaimer - SWAT is a river basin scale model developed to quantify the impact of land management practices in large, complex watersheds.

AnnAGNPS Pollutant Loading Model - The AnnAGNPS PL model is a batch-process, continuous-simulation, pollutant loading (PL) computer model.

Watershed Analysis Risk Management Framework (WARMF) - The system provides a road map to calculate TMDLs for most conventional pollutants (coliform, TSS, BOD, nutrients). It also provides a road map to guide stakeholders to reach consensus on an implementation plan.

EPA Center for Exposure Assessment Modeling (CEAM) - Provides proven predictive exposure assessment techniques for aquatic, terrestrial, and multimedia pathways for organic chemicals and metals.

USEPA Storm Water Management Model (SWMM) - The EPA Storm Water Management Model (SWMM) is a dynamic rainfall-runoff simulation model used for single event or long-term (continuous) simulation of runoff quantity and quality from primarily urban areas.

Long-Term Hydrologic Impact Assessments (L-THIA) Exit EPA Disclaimer - This tool uses the land use and a soil characteristic from the user along with thirty years of precipitation data to determine the average impact that a particular land use change or set of changes will have on both the annual runoff and the average amount of several non-point source pollutants.

MIKE SHE Exit EPA Disclaimer - Simulates water flow in the entire land based phase of the hydrological cycle from rainfall to river flow, via various flow processes such as, overland flow, infiltration into soils, evapotranspiration from vegetation, and groundwater flow.

Vegetative Filter Strip Modeling System (VFSMOD) Exit EPA Disclaimer - VFSMOD provides specialized modeling of field-scale processes associated with filter strips or buffers. This model provides routing of storm runoff from an adjacent field through a vegetative filter strip and calculates outflow, infiltration, and sediment-trapping efficiency.

Riparian Ecosystem Management Model (REMM) Exit EPA Disclaimer - Simulate hydrology, nutrient dynamics and plant growth for land areas between the edge of fields and a water body.

PLOAD - PLOAD is a simple GIS-based watershed loading model that can be used to estimate combined point and non-point source loads in either small urban areas or in rural watersheds of any size.

American Forests: CITYgreen Exit EPA Disclaimer - Conducts complex statistical analyses of ecosystem services and creates easy-to-understand maps and reports.

WEPP Software: Water Erosion Prediction Project - WEPP simulates water runoff, erosion, and sediment delivery from fields or small watersheds.

DRAINMOD Exit EPA Disclaimer  - The model predicts the effects of drainage and associated water management practices on water table depths, the soil water regime and crop yields. It has been used to analyze the hydrology of certain types of wetlands and to determine whether the wetland hydrologic criterion is satisfied for drained or partially drained sites.

DMSTA: Dynamic Model for Stormwater Treatment Areas Exit EPA Disclaimer - Developed to support design of wetland treatment areas to remove phosphorus from runoff and Lake Okeechobee discharges.

BATHTUB Exit EPA Disclaimer - This site provides information on the BATHTUB model which is a steady-state water quality model that simulates eutrophication-related water quality conditions in lakes and reservoirs.

USGS Generation and Analysis of Model Simulation Scenarios (GenScn) - These models are used to simulate water quantity and quality for numerous scenarios of changes in land use, land-use management practices, and water-management operations.

WASP - This model helps users interpret and predict water quality responses to natural phenomena and manmade pollution for various pollution management decisions.

Water Resources Applications Software - This site provides links to additional tools and documents addressing surface and groundwater modeling inquiries.

The USGS Surface-water quality and flow Modeling Interest Group (SMIG) - The SMIG site allows users to network with other modelers, keep abreast of current modeling activities with the USGS; discuss new modeling techniques, algorithms, interfaces, etc.; learn about new models; share ideas and experience; and solve problems.

Riparian Ecosystem Management Model (REMM) Exit EPA Disclaimer - REMM is used to simulate hydrology, nutrient dynamics and plant growth for land areas between the edge of fields and a water body.

USGS - National Streamflow Statistics Program  - Information for all states is provided, including report number, fact sheets and reported URL (if available).

P8-UCM Exit EPA Disclaimer - P8 is a model for predicting the generation and transport of stormwater runoff pollutants in urban watersheds. Simulations are driven by continuous hourly rainfall and daily air temperature time series. The model has been developed for use by engineers and planners in designing and evaluating runoff treatment schemes for existing or proposed urban developments.

PREDICT Tool for AVGWLF Exit EPA Disclaimer - This new tool allows the user to create various scenarios in which current landscape conditions and pollutant loads (both point and nonpoint) can be compared against future conditions that reflect the use of different pollution reduction strategies. This tool includes pollutant reduction coefficients for nitrogen, phosphorus and sediment, and it also has built-in cost information for an assortment of pollution mitigation techniques.

Model for Urban Stormwater Improvement Conceptualization (MUSIC) Exit EPA Disclaimer - MUSIC was developed to evaluate small- and large-scale (0.01 km2 to 100 km2) urban stormwater systems using modeling time steps that range from 6 minutes to 24 hours. MUSIC provides an interface to help set up complex stormwater management scenarios.

Source Loading and Management Model (SLAMM) - SLAMM is mostly used as a planning tool, to better understand sources of urban runoff pollutants and their control.

Spatially Referenced Regressions on Watershed Attributes (SPARROW) - The SPARROW model empirically estimates the origin and fate of contaminants in streams, and quantifies uncertainties in these estimates based on model coefficient error and unexplained variability in the observed data.

Mercury Loading Model (PDF) (5 pp, 124K, About PDF) - Watershed-scale Mercury Loading Model is an ArcView 3.x grid-based modeling extension of the Watershed Characterization System (WCS).

Spreadsheet Tool for Estimating Pollutant Load (STEPL) Exit EPA Disclaimer - Spreadsheet Tool for Estimating Pollutant Load (STEPL) employs simple algorithms to calculate nutrient and sediment loads from different land uses and the load reductions that would result from the implementation of various best management practices (BMPs).

SET (NC Spreadsheet Site Evaluation Tool) Exit EPA Disclaimer - The SET is designed primarily for local government site review planners, professional developers, and stormwater engineers, but it is useful for anyone with a little knowledge of stormwater.

California Water and Environmental Modeling Forum Exit EPA Disclaimer - Here you can find an approach to developing an external peer review committee to review the development of a model and the validity of the model application to the specific project at hand.

MINTEQA2 - The model is useful for calculating the equilibrium mass distribution among dissolved species, adsorbed species, and multiple solid phases under a variety of conditions including a gas phase with constant partial pressures.

LSPC - LSPC is the Loading Simulation Program in C++, a watershed modeling system that includes streamlined Hydrologic Simulation Program Fortran (HSPF) algorithms for simulating hydrology, sediment, and general water quality on land as well as a simplified stream transport model.

EFDC Hydro - The Environmental Fluid Dynamics Code (EFDC Hydro) is a state-of-the-art hydrodynamic model that can be used to simulate aquatic systems in one, two, and three dimensions.

EPA AQUATOX - Simulation model for aquatic systems.

HSPF - Simulate water and constituent movement within both watersheds and their receiving waterbodies including rivers, streams, and well-mixed lakes and reservoirs.

CADDIS - CADDIS is an online application that helps scientists and engineers in the Regions, States and Tribes find, access, organize, use and share information to conduct causal evaluations in aquatic systems.

Kinematic Runoff and Erosion Model (KINEROS2) - This tool is a an event oriented, physically based model describing the processes of interception, infiltration, surface runoff and erosion from small agricultural and urban watersheds.

GSSHA Exit EPA Disclaimer  - A distributed (2D) hydrologic model developed for analysis of surface runoff, channel hydraulics, and groundwater interaction. Water quality and sediment transport are also supported.

BasinSim and Generalized Watershed Loading Functions (GWLF) Exit EPA Disclaimer - BasinSim is simulation software, developed by VIMS, that predicts sediment and nutrient loads for small- to mid-sized watersheds.

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Habitat Assessment Tools

Instream Flow Incremental Methodology (IFIM) - IFIM integrates concepts of water-supply planning, analytical hydraulic engineering models, and empirically derived habitat-versus-flow functions to address water-use and instream-flow issues and questions concerning life-stage-specific effects on selected species and the general well being of aquatic biological populations.

HACCP (Hazard Analysis and Critical Control Point planning) - Pillsbury roots Exit EPA Disclaimer - HACCP planning focuses attention on critical control points where non-target species can be removed. Documenting risks and methods used to remove non target species gives managers a strategic method to make consistent decisions based on identified risks. Planning builds a logical framework of information to weigh risks for species spread against management benefits.

Indicators of Hydrologic Alteration (IHA) Software Exit EPA Disclaimer - Indicators of Hydrologic Alteration (IHA) Software for Understanding Hydrologic Changes in Ecologically-Relevant Terms is a tool to assist in the collection and maintenance of daily hydrologic data.

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Set Goals and Target Solutions

USEPA Water Quality Trading Toolkit for Permit Writers - The Water Quality Trading Toolkit for Permit Writers is EPA's first "how-to" manual on designing and implementing water quality trading programs. The Toolkit helps National Pollutant Discharge Elimination System (NPDES) permitting authorities incorporate trading provisions into permits. It will help improve the quality and consistency of all trading programs across the nation.

Abstract for TMDL Model Evaluation and Research Needs - The full document is linked to the abstract page.

EPA / Water Science / Great Lakes Initiative - The Final Water Quality Guidance for the Great Lakes System (the Great Lakes Initiative) is a plan agreed upon by EPA and the Great Lake states to restore the health of the Great Lakes.

EPA NPDES Permit Program Basics - This section of this website contains basic information on the major features and elements of the NPDES permit program. The information in this section will be most useful to state and tribal officials, interested citizens, and others with an interest in the details of the NPDES program.

Statistical Considerations for Data Quality Objectives and Data Quality Assessments in Water Quality Attainment Studies - Appendix C (PDF) (94 pp, 1.1MB, About PDF) - Appendix C - Full Appendix is available here.

USEPA TMDL Technical Support Documents - Many documents are available in PDF format.

USEPA Water Quality Trading Toolkit for Permit Writers - The Water Quality Trading Toolkit for Permit Writers is EPA's first "how-to" manual on designing and implementing water quality trading programs. The Toolkit helps National Pollutant Discharge Elimination System (NPDES) permitting authorities incorporate trading provisions into permits. It will help improve the quality and consistency of all trading programs across the nation.

Rouge River National Wet Weather Demonstration Project, Wayne County, Michigan: Planning and Cost Estimating Criteria for Best Management Practices (PDF) Exit EPA Disclaimer (38 pp, 105K, About PDF) - Full document is available.

EPA / Polluted Runoff (Nonpoint Source Pollution) / Low-Impact Development (LID) - A list of links to EPA and non-EPA sites with information and publications on Low-Impact Development (LID).

EPA / Polluted Runoff (Nonpoint Source Pollution) / NPS Categories - A list of links to published guidance documents for the following NPS categories: Acid mine drainage, Agriculture, Forestry, Hydromodification/habitat alteration, Marinas/boating, Roads, highways, and bridges, Urban areas, and Wetland/riparian management.

EPA / Polluted Runoff (Nonpoint Source Pollution) / National Management Measures to Control Nonpoint Source Pollution from Agriculture - Provides cost information for agricultural management practices, including a number of nonstructural management options.

EPA / National Pollutant Discharge Elimination System (NPDES) / National Menu of Stormwater Best Management Practices - A comprehensive list of BMP fact sheets contains information on construction and maintenance costs, as well as other monetary considerations.

EPA / Polluted Runoff (Nonpoint Source Pollution) / National Management Measures to Control Nonpoint Source Pollution from Forestry - Provides information for forestry management practices.

Natural Resources Conservation Service / National Conservation Practice Standards - NHCP - NRCS National Handbook of Conservation Practices provides a list of practices applicable to rural and farming areas; consultation with NRCS staff when considering management actions in rural areas is highly recommended.

EPA / Polluted Runoff (Nonpoint Source Pollution) / National Management Measures to Control Nonpoint Source Pollution from Marinas and Recreational Boating - Provides information for marina and recreational boating management practices.

EPA / Polluted Runoff (Nonpoint Source Pollution) / National Management Measures to Control Nonpoint Source Pollution from Urban Areas - This guidance helps citizens and municipalities in urban areas protect bodies of water from polluted runoff that can result from everyday activities. These scientifically sound techniques are the best practices known today. The guidance will also help states to implement their nonpoint source control programs and municipalities to implement their Phase II Storm Water Permit Programs.

EPA / Polluted Runoff (Nonpoint Source Pollution) / National Management Measures to Control Nonpoint Source Pollution from Urban Areas - Provides information for management measures for urban areas and cost/benefit and other information.

Water Stewardship: A Program Empowering Individuals to Conserve and Protect Our Water / A Non Point Source Residential Behavior Change and Public Participation Strategy Exit EPA Disclaimer - The Livable Neighborhood Water Stewardship Program in Falls Church, Virginia, fulfilled community members' desire to take part in watershed protection activities at the neighborhood level. The teams adopted behaviors such as creating a rain garden and reducing the use of household chemicals.

USEPA Water Quality Trading Assessment Handbook - Full document is available.

NRCS / National Conservation Practice Standards - NRCS conservation practice standards provide guidance for applying conservation technology on the land and set the minimum acceptable level for application of the technology.

USEPA Stormwater Control Operation and Maintenance - This section includes model ordinance language, which focuses primarily on the maintenance of stormwater BMPs, and includes the elements of design, routine maintenance, and inspections.

USEPA National Management Measures to Control Nonpoint Source Pollution from Urban Areas - Provides information for management measures for urban areas and cost/benefit and other information.

USEPA National Management Measures to Control Nonpoint Source Pollution from Urban Areas - This guidance helps citizens and municipalities in urban areas protect bodies of water from polluted runoff that can result from everyday activities. These scientifically sound techniques are the best practices known today. The guidance will also help states to implement their nonpoint source control programs and municipalities to implement their Phase II Storm Water Permit Programs.

Logic Model Worksheets Exit EPA Disclaimer - Online courses and worksheets available for download.

Abstract for TMDL Model Evaluation and Research Needs - The full document is linked to the abstract page.

EPA / Water Science / Great Lakes Initiative - The Final Water Quality Guidance for the Great Lakes System (the Great Lakes Initiative) is a plan agreed upon by EPA and the Great Lake states to restore the health of the Great Lakes.

EPA NPDES Permit Program Basics - This section of this website contains basic information on the major features and elements of the NPDES permit program. The information in this section will be most useful to state and tribal officials, interested citizens, and others with an interest in the details of the NPDES program.

USEPA TMDL Technical Support Documents - Many documents are available in PDF format.

USEPA Water Quality Trading Toolkit for Permit Writers - The Water Quality Trading Toolkit for Permit Writers is EPA's first "how-to" manual on designing and implementing water quality trading programs. The Toolkit helps National Pollutant Discharge Elimination System (NPDES) permitting authorities incorporate trading provisions into permits. It will help improve the quality and consistency of all trading programs across the nation.

EPA / Polluted Runoff (Nonpoint Source Pollution) / Low-Impact Development (LID) - A list of links to EPA and non-EPA sites with information and publications on Low-Impact Development (LID).

EPA / Polluted Runoff (Nonpoint Source Pollution) / NPS Categories - A list of links to published guidance documents for the following NPS categories: Acid mine drainage, Agriculture, Forestry, Hydromodification/habitat alteration, Marinas/boating, Roads, highways, and bridges, Urban areas, and Wetland/riparian management.

EPA / Polluted Runoff (Nonpoint Source Pollution) / National Management Measures to Control Nonpoint Source Pollution from Agriculture (PDF) (12 pp, 238K, About PDF) - Provides cost information for agricultural management practices, including a number of nonstructural management options.

EPA / National Pollutant Discharge Elimination System (NPDES) / National Menu of Stormwater Best Management Practices - A comprehensive list of BMP fact sheets contains information on construction and maintenance costs, as well as other monetary considerations.

EPA / Polluted Runoff (Nonpoint Source Pollution) / National Management Measures to Control Nonpoint Source Pollution from Forestry (PDF)  (276 pp, 17.3MB, About PDF) - Provides information for forestry management practices.

Section 319 Nonpoint Source National Monitoring Program Successes and Recommendations  - Full document is available.

Natural Resources Conservation Service / National Conservation Practice Standards - NHCP - NRCS National Handbook of Conservation Practices provides a list of practices applicable to rural and farming areas; consultation with NRCS staff when considering management actions in rural areas is highly recommended.

EPA / Polluted Runoff (Nonpoint Source Pollution) / National Management Measures to Control Nonpoint Source Pollution from Marinas and Recreational Boating - Provides information for marina and recreational boating management practices.

EPA / Polluted Runoff (Nonpoint Source Pollution) / National Management Measures to Control Nonpoint Source Pollution from Urban Areas - Provides information for management measures for urban areas and cost/benefit and other information.

Water Stewardship: A Program Empowering Individuals to Conserve and Protect Our Water / A Non Point Source Residential Behavior Change and Public Participation Strategy Exit EPA Disclaimer  - The Livable Neighborhood Water Stewardship Program in Falls Church, Virginia, fulfilled community members' desire to take part in watershed protection activities at the neighborhood level. The teams adopted behaviors such as creating a rain garden and reducing the use of household chemicals.

USEPA Water Quality Trading Assessment Handbook - Full document is available.

NRCS / National Conservation Practice Standards - NRCS conservation practice standards provide guidance for applying conservation technology on the land and set the minimum acceptable level for application of the technology.

USEPA Stormwater Control Operation and Maintenance - This section includes model ordinance language, which focuses primarily on the maintenance of stormwater BMPs, and includes the elements of design, routine maintenance, and inspections.

USEPA National Management Measures to Control Nonpoint Source Pollution from Urban Areas - Provides information for management measures for urban areas and cost/benefit and other information.

USEPA National Management Measures to Control Nonpoint Source Pollution from Urban Areas - This guidance helps citizens and municipalities in urban areas protect bodies of water from polluted runoff that can result from everyday activities. These scientifically sound techniques are the best practices known today. The guidance will also help states to implement their nonpoint source control programs and municipalities to implement their Phase II Storm Water Permit Programs.

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Economic Decision Support Tools

Performance and Whole Life Costs of Best Management Practices and Sustainable Urban Drainage Systems Exit EPA Disclaimer - Document available to WERF subscribers.

USDA National Agroforestry Center / Buffer$: A Conservation Buffer Economic Tool Exit EPA Disclaimer - Buffer$, a Microsoft Excel-based tool, can be used to analyze the cost benefits of buffers compared to those of traditional crops.

USEPA Guidebook of Financial Tools - Full Guidebook is available with new tools being added periodically.

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Design and Publish an Implementation Program

A User's Guide to Watershed Planning in Maryland Exit EPA Disclaimer - A User's Guide to Watershed Planning in Maryland presents a common watershed planning framework for Maryland communities, assembles planning resources into one place, integrates regulatory drivers, and presents the methods necessary for completing a local watershed plan. Local government staff are the primary audience for this guide.

Developing a Watershed Management Plan for Water Quality: An Introductory Guide (PDF) (56 pp, 994K, About PDF) - Full document is available.

Planning As Process: A Community Guide to Watershed Planning (PDF) (87 pp, 622K, About PDF) - Full document is available.

A Guide to Developing Local Watershed Action Plans in Ohio (by Ohio EPA) (PDF) Exit EPA Disclaimer (84 pp, 1.4MB, About PDF) - Full document is available.

Indiana Watershed Planning Guide (PDF) (110 pp, 527K, About PDF) - Full document is available.

Close to Home: A Focus on Small Watersheds Exit EPA Disclaimer - An article in Monitor, the quarterly newsletter for Maryland's Tributary Strategy Implementation Team members. The article focuses on the challenges of working in and on smaller watershed-based problems.

Beaver Creek and Little Creek Water Quality Implementation Plan Washington County and City of Bristol, Virginia (Bacteria and Sediment TMDLs) (PDF) (41 pp, 1.3MB, About PDF) - Full document is available.

EPA Section 319 Nonpoint Source Success Stories - The Web site features waterbodies identified by states as being primarily nonpoint source-impaired and having achieved documented water quality improvements.

International Stormwater Best Management Practices (BMP) Database Exit EPA Disclaimer - This Web site provides access to performance data for more than 200 management practice studies.

Adapting Watershed Tools to Protect Wetlands Exit EPA Disclaimer - Article 3 of the Wetlands & Watersheds Article Series (full document available).

The Smart Growth Leadership Institute Exit EPA Disclaimer - Provides guidance on policies and procedures that get in the way of implementing smart growth strategies and sustainable urban development in communities.

MP (Management Practices) Miner Exit EPA Disclaimer - MP Miner is a searchable database of documented non-point source pollution management practice implementations. The information contained in the database was collected from various scientific texts, journals, web sites, and presentations.

USDA Natural Resources Conservation Service - This service is a valuable support for funding the implementation of agricultural management practices, wetland restoration, land retirement, and other projects associated with watershed plans.

U.S. Forest Service (USFS) Exit EPA Disclaimer - This service manages the 195 million acres of public lands in national forests and grasslands. You can reach your local Forest Service managers and their resource staff through this Web site.

EPA / Polluted Runoff (Nonpoint Source Pollution) / Tribal Nonpoint Source Information - This program provides information on techniques and grant funding for tribes to address nonpoint source pollution.

USEPA Elements of State Water Monitoring and Assessment Program - Full document is available.

NC Division of Water Quality: Nonpoint Source Management Program :: Tar-Pamlico Nutrient Strategy Exit EPA Disclaimer - Study documentation and links to other stormwater information.

USEPA National Estuary Program - Comprehensive Conservation and Management Plans - Each of the 28 National Estuary Programs was charged with developing and implementing a Comprehensive Conservation and Management Plan (CCMP) which establishes priorities for activities, research, and funding for the estuary. Select a program below to view its CCMP, note that some of these links will transport you off the EPA server.

Department of Geosciences at the University of Nebraska - Lake/Reservoir Strategy Exit EPA Disclaimer - Download the paper titled: Development and Implementation of a Comprehensive Lake and Reservoir Strategy for Nebraska as a Model for Agricultural Dominated Ecosystesm.

Mill Creek Watershed Implementation Plan Exit EPA Disclaimer - Full document is available.

IMRivers Exit EPA Disclaimer - The IMRivers web site allows nonprofit River Network Partner to develop interactive watershed maps for a fee and make them available to the public.

Guidelines and Discount Rates for Benefit-Cost Analysis of Federal Programs - Circular No. A-94, Revised (Transmittal Memo No. 64).

EPA / Total Maximum Daily Loads 2006 Integrated Report Guidance - A link to the Guidance for 2006 Assessment, Listing, and Reporting Requirements Pursuant to Sections 303(d), 305(b), and 314 of the Clean Water Act and related materials.

U.S. Fish and Wildlife Service (USFWS) - A list of federal statutes and regulations that affect how watersheds are managed.

EPA Programs - How EPA Programs use the Watershed Approach.

EPA / Federal Register (PDF) (12 pp, 1.5MB, About PDF) - Download the Combined Sewer Overflow Control Policy which is a national framework for controlling CSOs through the NPDES permitting program.

EPA / Polluted Runoff (Nonpoint Source Pollution) Laws, Regulations, Treaties - A list of informational sites and documents covering the Nonpoint Source Management Program - Clean Water Section 319 along with a list of EPA guidelines.

US Fish & Wildlife Service Digest of Federal Resource Laws - A list of Interstate Compacts and Interstate Water Apportionment with links to further information.

The Environmental Law Institute: Almanac of Enforceable State Laws to Control Nonpoint Source Water Pollution Exit EPA Disclaimer - This report provides a state-by-state summary, including Puerto Rico and the District of Columbia, of enforcement-based laws that are potentially applicable to nonpoint source water pollution. This study discusses the diversity and ubiquity of state legal mechanisms as well as the inconsistent treatment of similar problems from one state to the next.

GPO Access / National Archives and Records Administration - This lists the Electronic Code of Federal Regulations Title 40: Protection of the Environment, Part 131: Water Quality Standards with links to all of its subparts.

EPA / Laws, Regulations, Guidance and Dockets / Laws that We Administer - This website provides information on the laws and Executive Orders EPA is charged with administering to help protect human health and the environment.

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Implement the Watershed Plan

Ohio Nonpoint Solution Management Plan - WAP-3E (6/23/05 version) Effective Watershed Action Planning (WAP) And Implementation: Sustainable Components And Key Outcomes (Sustainable: Effective, Long-term NPS Coordination, Implementation and Evaluation Occurs).

USEPA Rapid Bioassessment Protocols for Use in Streams and Wadeable Rivers: Periphyton, Benthic Macroinvertebreates and Fish - Full document is available.

U.S. Water Monitor - The U.S. Water Monitor is a portal to Federal water information and a companion to the U.S. Drought Monitor and the Drought Impact Reporter.

The Watershed Project Management Guide Exit EPA Disclaimer - The Watershed Project Management Guide presents a four-phase approach to watershed management that is based on a collaborative process that responds to common needs and goals. Lewis Publishers - Available for purchase.

Maryland Biological Stream Survey (MBSS) Exit EPA Disclaimer - The Maryland Biological Stream Survey (MBSS) uses random sampling to determine the status of wadeable streams and rivers in Maryland.

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Measure Progress and Make Adjustments

A Citizen's Guide to Understanding and Monitoring Lakes and Streams - This guide introduces citizens in the Puget Sound area to lake and stream water quality monitoring. The topics cover monitoring strategies that will encourage quality data collection.

Izaak Walton League of America (IWLA) / Save Our Streams (SOS) Exit EPA Disclaimer - SOS is a national watershed education and outreach program. Since 1969, we have cleaned-up stream corridors, monitored stream health, and restored degraded stream banks.

EPA / Monitoring and Assessing Water Quality / Rapid Bioassessment Protocols for Use in Streams and Wadeable Rivers: Periphyton, Benthic Macroinvertebrates, and Fish - This Web site provides information about the evaluation of community assemblages (e.g., macroinvertebrates, fish, periphyton) a critical measure of the overall effectiveness of habitat protection management measures.

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Effectiveness Monitoring

Section 319 National Monitoring Program Projects / National Nonpoint Source Watershed Project Studies - For more information on developing monitoring programs, see results and recommendations of National NPS Monitoring Program projects.

Methods for Collection, Storage and Manipulation of Sediments for Chemical and Toxicological Analyses: Technical Manual - Full text of the technical manual is presented, along with a fact sheet and a link to the official federal register notice.

CEAP Program NRCS - This site includes a fact sheet on using Natureserve data.

CT Rapid Bioassessment in Wadeable Streams and Rivers by Volunteer Monitors - The RBV program is a standardized screening method that keeps the equipment, expertise, and time commitment to a minimum while simultaneously identifying sections of streams with pollution sensitive organisms. You can find the monitoring protocol here.

Sampling and Analysis Plans (SAPs) Exit EPA Disclaimer - See document: Engineering and Design - Requirements for the Preparation of Sampling and Analysis Plans (specifically chapter 3, Sampling and Analysis Plan: Format and Contents, and Appendix J, Sampling and Analysis Plan Review Checklist.

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