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Water: Dredged Material Management

Emerging Issues: Environmental Windows

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      2003 Action Agenda
      Beneficial Use of Dredged Material
      Dredged Material Management
      Essential Fish Habitat
        Federal Standard
        Local Planning Groups
        Managing Sediments in the Watershed
        Member Agencies
          National Dredging Policy
          Regional Dredging Teams
          Regional Sediment Management
          Total Maximum Daily Loads

Environmental windows are used as a management practice to eliminate risk of potentially harmful impacts of dredging activities on aquatic resources. Environmental windows are those periods of the year when dredging and disposal activities may be carried out because regulators have decided that adverse impacts associated with dredging and disposal would not exceed critical known or perceived thresholds during these periods.

The first environmental windows were established more than 35 years ago and, according to the U.S. Army Corps of Engineers, are applied today to more than 80 percent of all federal dredging projects. The importance of continuing to evaluate the impacts of environmental windows on dredging and dredged material management led the National Dredging Team to include environmental windows as an emerging issue in its 2003 Action Agenda.

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