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Draft Integrated Report

DEQ submitted its 2022 Integrated Report to EPA on May 23, 2022. The report is now considered “state final” and is awaiting EPA approval. The 2018/2020 Integrated Report remains in effect until EPA approval of the report. 

There are four tools to assist with review of the draft 2022 Integrated Report:
  • An interactive story map that provides an overview of the water quality assessment process and how to provide comments on the draft report.
  • An interactive web map application that displays the Integrated Report by overall status of an assessment unit. For assistance, see the web map instructions.
  • An on-line searchable database that provides parameter specific categorical assessment conclusions for all assessment units that have been assessed.
  • All GIS data is available through ArcGIS online web services 

More information

The federal Clean Water Act requires the Oregon Department of Environmental Quality to assess Oregon's water quality and prepare a report every two years. The Integrated Report is a database report 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 are needed. 

The 2022, Integrated Report represents the state's most comprehensive evaluation of water quality data and information about Oregon's waters. DEQ assessed this data and information to determine whether Oregon's waters contain pollutants at levels that exceed protective water quality standards and do not support their beneficial uses. To complete this assessment, DEQ reviewed and assessed readily available data and information for the time period Jan.1, 2016, through Dec.31, 2020, using the Methodology for Oregon's 2022 Water Quality Report and List of Water Quality Limited Waters. 

The 2018/2020 Integrated Report categorizes all assessed waterbodies. DEQ evaluated data on whether Oregon's waters are of a high enough quality to meet the most common beneficial uses, such as supporting aquatic life, providing drinking water or supporting recreation. Waterbodies that exceed protective water quality standards are identified as impaired and placed on the 303(d) list. Identifying a waterbody as impaired initiates the prioritization and development of a TMDL. 

The categories are:
  • Category 1: All beneficial uses are supported, and none are known to be impaired. Oregon does not have sufficiently robust data to be able to use this category.
  • Category 2: At least one core beneficial use is supported, and none are known to be impaired.
  • Category 3: Not enough information to determine beneficial use support.
  • Category 4: Available data and/or information indicate that at least one designated use is not being supported but a TMDL is not needed.
  • Category 5: At least one beneficial use is not supported and a TMDL is needed.

The public comment period for the draft assessment methodology for Oregon's 2022 Water Quality Report and List of Water Quality Limited Waters closed on Monday, March 8, 2021. The following document was provided for stakeholder feedback: 2022 Draft Assessment Methodology 

DEQ reviewed the comments provided, incorporated any changes to the methodology document, and provided a summary of the comments received and responses to comments in the documents below. Please remember to Sign up for Water Quality Assessment Reporting and 303(d) GovDelivery  to stay informed.

stay connected Sign up for Water Quality Assessment Reporting and 303(d) GovDelivery topic to stay up to date on public processes and data calls


For more information on the Integrated Report, please contact:


Lesley Merrick, 971-323-7228 
WQ Assessment Program Lead

Travis Pritchard, 503-887-4346
WQ Assessment Data Analyst

Connie Dou, 503-853-6517
WQ Assessment Manager