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Water: Total Maximum Daily Loads (303d)

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Fact Sheets

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EPA Reports

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Publications

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EPA Websites

  • Recovery Potential Screening
    This website is an applied set of tools, techniques and reference information to help states and others compare the restorability of their impaired waters to inform strategies for earlier and greater success in restoration. Many of the recovery potential indicators and restorability screening techniques were developed from insights gained through TMDL program results analysis and apply the lessons learned from the results analysis project.  
  • STORET/WQX Database Access
    EPA maintains two data warehouse systems containing water quality information for the nation's waters: the Legacy Data Center (LDC), and the STOrage and RETrieval warehouse (STORET). The LDC is a static, archived database and STORET is an operational system actively being populated with water quality data through the Water Quality Exchange (WQX).
  • Section 319 Nonpoint Source Success Stories
    This website features stories about primarily nonpoint source-impaired waterbodies where restoration efforts have led to documented water quality improvements.

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EPA Grantee Reports

  • Third Party TMDL Development Toolkit (PDF) (30 pp, 1.7MB) 
    Water Environment Federation's toolkit provides basic steps in which an organization or group other than the lead water quality agency takes responsibility for developing the TMDL document and supporting analysis. The toolkit was funded in part by EPA assistance agreement number 83255601.
  • Implementing Total Maximum Daily Loads: Understanding and Fostering Successful Results (PDF) (154 pp, 1.1MB), December 2008
    This study, completed by Kent State University with funding from EPA grant number 83339301, focuses on the states of Ohio and West Virginia; it addresses the extent to which TMDLs are being implemented, factors that facilitate implementation progress, and steps that can be taken to facilitate further progress on TMDL implementation.
  • TMDL Implementation – Characteristics of Successful Projects Exit EPA Disclaimer
    This Virginia Tech Center for TMDL and Watershed Studies report, funded in part by EPA grant numbers 83217601 and 83156301, provides state TMDL implementation information and reviews ongoing TMDL implementation efforts across the country and their associated TMDLs and implementation plans to identify factors that contribute to successful implementation.
  • State Implementation Information Summary (PDF) (19 pp, 72K), September 2008
    This Virginia Tech Center for TMDL and Watershed Studies report, funded in part by EPA grant numbers 83217601 and 83156301, provides state TMDL implementation procedural information in a comparative format.

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EPA Grantee websites

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Datasets

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