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Publications
Current Assessment Methodology Documents
Methodology for Iowa’s 2020 Water Quality Assessment, Listing, and Reporting Pursuant to Sections 305(b) and 303(d) of the Federal Clean Water Act
Previous Assessment Methodology Documents
Methodology for Iowa’s 2018 Water Quality Assessment, Listing, and Reporting Pursuant to Sections 305(b) and 303(d) of the Federal Clean Water Act
Methodology for Iowa’s 2016 Water Quality Assessment, Listing, and Reporting Pursuant to Sections 305(b) and 303(d) of the Federal Clean Water Act
GIS Datasets
Impaired Waters
Iowa DNR Geospatial REST services
- water quality
Other Documentation
Surface Water Classification - 2019
List of Iowa surface waters and their use designations.
Iowa DNR - Impaired Waters
Links to downloads of previous Integrated Report documentation
Iowa Administrative Code Chapter 61 - Water Quality Standards
This page was created 9/29/2016 9:55:09 AM and was last updated 2/19/2021 1:03:43 PM