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Integrated Water Quality Monitoring and Assessment Report

Alaska's List of Impaired or 303(D) Listed Waterbodies

The Clean Water Act (CWA) mandates that each state develop a program to monitor and report on the quality of its waters and prepare a report describing the status of its water quality. The relevant CWA sections are Section 305(b), which requires that the quality of all waterbodies be characterized, and Section 303(d) which requires that states list any waterbodies that do not meet water quality standards (known as polluted or impaired waters). Alaska's Integrated Water Quality Monitoring and Assessment Report (Integrated Report) combines the information into a single comprehensive report.

2022 Integrated Report

DEC plans to conduct a call for data in fall 2020 for the 2022 Integrated Water Quality Monitoring and Assessment Report (Integrated Report).

2020 Integrated Report

(DEC) is currently analyzing water quality data and information for the development of Alaska’s 2020 Integrated Water Quality Monitoring and Assessment Report (Integrated Report).

2018 Integrated Report


Approved 2018 Integrated Report

DEC submitted the final 2018 Integrated Water Quality Monitoring and Assessment Report to EPA on March 26, 2020, including the 305(b) report on the status of State waters and the 303(d) Impaired Waters List. Major changes in the report including moving several creeks in the Bonanza Creek watershed from Category 5 to Category 2 for turbidity attainment, and moving Eagle River from Category 5 to Category 2 for ammonia, copper, lead, silver and chlorine attainment. For a more detailed summary of the report see the 2018 Integrated Report Fact Sheet. EPA approved Alaska’s Integrated Report on June 23, 2020.

For over 30 years DEC has prepared a “paper” Integrated Report to the U.S. Environmental Protection Agency (EPA) to satisfy the reporting requirements of the Clean Water Act. The water quality assessment information from the States is sent to the EPA and is managed and maintained in a system called ATTAINS (Assessment and Total Maximum Daily Load Tracking and Implementation System). EPA is revising and redesigning the ATTAINS system to be more streamlined.

Results from Alaska’s Integrated Report can now be found on Hows My Waterway, recently released by EPA. How’s My Waterway integrates data from the Integrated Report with local water quality data, information on aquatic recreation and harvest, and restoration and protection efforts.

Find out and read more about the US EPA ATTAINS system .

2014/2016 Approved Integrated Report

DEC's public informational meeting presentation (PDF)


The Alaska Department of Environmental Conservation (DEC) has issued the final 2014/2016 Integrated Water Quality Monitoring and Assessment Report

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