Clean Water Act Program
Guidance, Procedures & Resources
NC Verification V6_3-23-2017 Current Template 2017
Natural Community Validation Steps December 2016, 2017
Document to provide guidance on correcting Natural Community model evaluations.
Identifying the correct natural community Thermal Regime
Updating Wisconsin Streams Modeled Natural Community Review Decisions in WATERS
Fish Assemblage Natural Community Documentation Workbook Training - WQ Planning 2019
Fish IBI URL
In the course of reviewing State and Tribal water quality standards (WQS), EPA has identified several issues pertaining to the establishment of site specific numeric criteria on the basis of natural background conditions. EPA is issuing this policy to provide greater clarity and direction for States and Tribes who are considering establishing site specific criteria equal to natural background conditions and for EPA Regional Offices reviewing State and Tribal water quality management programs.
Data analysis, report production
Wisconsin's natural community validations project