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Portland, OR—Today the Oregon Department of Environmental Quality released its draft 2018/2020 Integrated Report and is soliciting comments on surface water quality assessment results through Dec. 2, 2019. This report represents the state’s most comprehensive evaluation of water quality data and information about Oregon’s waters. It is accessible through both an online searchable database and a web-based map tool that is transparent and easy to use.

Access to clean water is essential to human health and to Oregon's economy. DEQ’s Water Quality Division supports and implements measures to conserve this valuable resource and ensure that clean lakes, streams, and rivers remain part of Oregon’s natural heritage.

DEQ has made significant improvements to the Integrated Report on Surface Water Quality and List of Water Quality Limited Waters, including a more robust and transparent analysis that is more accessible to the public.

The federal Clean Water Act (CWA) requires Oregon to report on the quality of its surface waters every two years. The report is a database that combines reporting information for the Clean Water Act Section 305(b) assessment of all water bodies and the Section 303(d) list of water bodies that do not meet water quality standards. The 303(d) list represents where pollution reduction plans called Total Maximum Daily Loads (TMDLs) are needed.

Some highlights to note in this report:

• For the first time, DEQ developed static “Assessment Units” to divide state waters into waterways with similar qualities. The assessment covered 2,871 units, representing 146,057 river miles.
• DEQ held its first statewide data call since the 2004/2006 Integrated Report DEQ reviewed and included data from over 70 organizations comprising 7 million rows of data and 140 different pollutants.
• The most widespread water quality impairments continue to be temperature, dissolved oxygen, and E. coli..

The report serves the following three functions:

• It satisfies the requirements of Clean Water Act sections 303(d) by evaluating the current conditions of all state waters where data exist, including publicly owned lakes, and lists waters that are impaired and need a TMDL.
• It informs the public about the status of state waters, enabling interested parties to comment on the status of Oregon’s waters and provide relevant data.
• It provides a unique opportunity for the public to understand the overall status of Oregon’s water quality and gain a better understanding of how DEQ is maintaining, improving, and protecting Oregon’s waters.

Oregon’s Draft 2018/2020 Integrated Report on Surface Water Quality and List of Water Quality Limited Waters is available on DEQ’s website:

After the public comment period, DEQ will submit the Integrated Report to the U.S. Environmental Protection Agency for approval. Once approved by EPA, Integrated Report will be available to the public and used by Oregon to guide its management decisions.

Comments may be submitted to or by U.S. mail to:

DEQ Water Quality Assessment
Water Quality Division
700 NE Multnomah
Portland, OR 97232-4100

Media contact: Contacts: Jennifer Flynt, public affairs specialist,, 503.730.5924



Environment & Energy