Research & Data

Use this portal to filter and search for all of our scientific information.

Ecology provides the high-quality science that is the foundation of Washington state environmental policy. Our monitoring, assessment, and modeling services provide a data-rich understanding of our state’s land, air, and water. We provide access to that data through reports, databases, maps and user-friendly online tools.

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2022 Streamflow Restoration competitive grant application instructions

Step by step instructions for filling out the EAGL application for WRSRP 2020 Competitive Grant Program.

https://ecology.wa.gov/application-instructions

Adopted rule language (WAC 173-555) 01/27/15

This is adopted rule language for WAC 173-555 Water Resources Program in the Little Spokane River basin, WRIA 55.

https://ecology.wa.gov/adopted-rule-language-wac-173-555-01-27-15

CR-101 Form (WAC 173-201A) 08/16/2017

This is a rulemaking announcement (CR-101) to update the recreational use criteria in WAC 173-201A Water Quality Standards for Surface Waters of the State of Washington

https://ecology.wa.gov/cr-101-form-wac-173-201a-08-16-2017

Adopted rule language (WAC 173-501) 05/27/2020

This is the adopted rule language for (WAC 173-501) Instream Resources Protection Program - Nooksack Water Resource Inventory Area (WRIA) 1

https://ecology.wa.gov/adopted-rule-language-wac-173-501-05-27-2020

Errata for general permit

This document describes the errors and their corrections found in the fin-fish hatching and rearing permit

https://ecology.wa.gov/errata-for-general-permit

Adopted rule language (WAC 173-557) 01/27/15

This is adopted rule language for WAC 173-557 Water Resources Management Program (WRMP) for the Spokane River and Spokane Valley Rathdrum Prairie (SVRP) Aquifer.

https://ecology.wa.gov/adopted-rule-language-wac-173-557-01-27-15

Ecology's response to Petition to Amend the Instream Flow Rule for the Spokane River & Spokane Valley Rathdrum Prairie (SVRP) Aquifer, (WAC 173-557; 173-555) 01/27/15

Ecology's response to Petition to Amend the Instream Flow Rule for the Spokane River & Spokane Valley Rathdrum Prairie (SVRP) Aquifer, WAC 173-557 Water Resources Management Program (WRMP) for the Spokane River and Spokane Valley Rathdrum Prairie (SVRP) Aquifer and amendment to WAC 173-555-010.

https://ecology.wa.gov/ecology-s-response-to-petition-to-amend-the-instre

Assessment of Areal Recharge (WAC 173-557; 173-555) 01/27/15

Assessment of Areal Recharge to the Spokane Valley-Rathdrum Prairie Aquifer, Spokane County, Washington, and Bonner and Kootenai Counties, United States Geological Survey, Scientific Investigations Report 2007–5038 WAC 173-557; 173-555 Water Resources Management Program (WRMP) for the Spokane River and Spokane Valley Rathdrum Prairie (SVRP) Aquifer and amendment to WAC 173-555-010.

https://ecology.wa.gov/assessment-of-areal-recharge-wac-173-557;-173-555

Compilation of Geologic, Hydrologic, and Ground-Water Flow Modeling (WAC 173-557; 173-555) 01/27/15

Compilation of Geologic, Hydrologic, and Ground-Water Flow Modeling Information for the Spokane Valley—Rathdrum Prairie Aquifer, Spokane County, Washington, and Bonner and Kootenai Counties, Idaho, United States Geological Survey, WAC 173-557; 173-555 Water Resources Management Program (WRMP) for the Spokane River and Spokane Valley Rathdrum Prairie (SVRP) Aquifer and amendment to WAC 173-555-010.

https://ecology.wa.gov/compilation-of-geologic-hydrologic-and-ground-wa

Ecology SVRPA Project Technical Memorandum: Data Report (WAC 173-557; 173-555) 01/27/15

Ecology SVRPA Project Technical Memorandum: Data Report, 2005 “6 minute” Study, Spokane Valley Rathdrum Prairie Aquifer Area, Ecology Memorandum, December 13, 2005 WAC 173-557; 173-555 Water Resources Management Program (WRMP) for the Spokane River and Spokane Valley Rathdrum Prairie (SVRP) Aquifer and amendment to WAC 173-555-010.

https://ecology.wa.gov/ecology-svrpa-project-technical-memorandum-data-r

Final Technical Report, Spokane River Instream Flow Studies (WAC 173-557; 173-555) 01/27/15

Final Technical Report, Spokane River Instream Flow Studies, EES Consulting, May 2007 WAC 173-557; 173-555 Water Resources Management Program (WRMP) for the Spokane River and Spokane Valley Rathdrum Prairie (SVRP) Aquifer and amendment to WAC 173-555-010.

https://ecology.wa.gov/final-technical-report-spokane-river-instream-flo

Gravity Acquisition and Depth to Basement Modeling (WAC 173-557; 173-555) 01/27/15

Gravity Acquisition and Depth to Basement Modeling of the Spokane Valley and Rathdrum Prairie Aquifer, Northeastern Washington and Northwestern Idaho, John S. Oldow and Kenneth F. Sprenke, Idaho Department of Water Resources, WA Ecology, October 31, 2006 WAC 173-557; 173-555 rulemaking.

https://ecology.wa.gov/gravity-acquisition-and-depth-to-basement-modeling

Ground-Water Flow Model (WAC 173-557; 173-555) 01/27/15

Ground-Water Flow Model for the Spokane valley-Rathdrum Prairie Aquifer, Spokane County, Washington, and Bonner and Kootenai Counties, Idaho, United States Geological Survey, Scientific Investigations Report 2007–5044 WAC 173-557; 173-555 Water Resources Management Program (WRMP) for the Spokane River and Spokane Valley Rathdrum Prairie (SVRP) Aquifer and amendment to WAC 173-555-010.

https://ecology.wa.gov/ground-water-flow-model-wac-173-557;-173-555-01

Hydrogeologic Framework and Ground-Water Budget (WAC 173-557; 173-555) 01/27/15

Hydrogeologic Framework and Ground-Water Budget of the Spokane Valley-Rathdrum Prairie Aquifer, Spokane County, Washington, and Bonner and Kootenai Counties, United States Geological Survey, Scientific Investigations Report 2007 WAC 173-557; 173-555 Water Resources Management Program (WRMP) for the Spokane River and Spokane Valley Rathdrum Prairie (SVRP) Aquifer and amendment to WAC 173-555-010.

https://ecology.wa.gov/hydrogeologic-framework-and-ground-water-budget-w

Adjudication Claim Form Coming Soon

If you use water from a well, stream, or lake, adjudication affects you

https://ecology.wa.gov/feb-mailer-2025