US Long-Term Ecological Research Network
Intervention_Category: Regulation/Standard; Intervention_Subcategory: general land use; Ag1_NonAg2_Both3: 3; Rulemaking_Agenc_.Level: Federal, State; Implementing_Agency_Level: Federal, State; Promulgating_Policies: CWA Sec. 303; Short_Intervention_Description: The WI DNR is required by the federal Clean Water Act to maintain a list of streams and other water bodies that do not meet the State’s water quality standards, known as the “303(d) List.” Once a waterbody is listed, the State develops a TMDL (Total Maximum Daily Load). Listing makes local governments eligible for CWA Section 319 grant funds.; Intervention_area_ha: 73945.88; Data_Sources: WI DNR, Impaired Waters website:; accessed July 2012.; Mapping_Rationale: HUC12 watershed surrounding 303D listed rivers and streams.
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