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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7Q10 for High Flows on the Columbia/Snake Rivers

Guidelines for arriving at 7Q10 for dissolved gas standards.

https://ecology.wa.gov/7q10forhighflows

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

Adopted rule language (WAC 173-166) 04/11/18

This is adopted rule language for WAC 173-166 Emergency Drought Relief

https://ecology.wa.gov/adopted-rule-language-wac-173-166-04-11-18

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 173-167) -7/28/2021

This is adopted rule language for WAC 173-167 Emergency Drought Funding

https://ecology.wa.gov/adopted-rule-language-wac-173-167-07-28-2021

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

Adopted emergency rule language (WAC 173-167) 06/04/2019

This is an emergency adopted rule language for WAC 173-167 Emergency Drought Funding

https://ecology.wa.gov/adopted-rule-language-wac-173-167-06-04-19-1

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

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

2018WAG993011AnnualRpt

2018 Z. Japonica Coast Seafood Annual Report

https://ecology.wa.gov/2018wag993011annualrpt

Chapter 173-167 WAC: Emergency Drought Funding

Adopted rule language for Chapter 173-167 WAC: Emergency Drought Funding

https://ecology.wa.gov/adopted-rule-language-wac-173-167-07-24-2023

2024 CR-103 Emergency Adopted rule

Emergency Drought declaration Adopted rule for 2024

https://ecology.wa.gov/rulemaking-emergency-adoption-notice-wac-173-167-07-24-2024

2024 Drought Rule Language

Rule language for the 2024 Emergency Drought Declaration, to accompany the CR-103 adopted rule

https://ecology.wa.gov/adopted-rule-language-wac-173-167-04-16-2024

Adopted emergency rule language (WAC 173-167) 08/14/24

This is an emergency adopted rule language for WAC 173-167

https://ecology.wa.gov/adopted-emergency-rule-language-wac-173-167-08-14-24

Adopted Rule Language (WAC 173-167) 12/11/24

This is the adopted rule language for Chapter 173-167 WAC (AO 24-04)

https://ecology.wa.gov/adopted-rule-language-wac-173-167-12-11-24