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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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Rulemaking Announcement refile (WAC 173-503A; 02/15/05

This is a rulemaking announcement refile (CR-101) for WAC 173-503A Instream Resources Protection Program Lower and Upper Skagit Water Resources Inventory Area (WRIAs 3 and 4)

https://ecology.wa.gov/rulemaking-announcement-refile-wac-173-503a;-02-2

Rulemaking Proposal (WAC 173-526) 04/19/10

This is a rulemaking proposal (CR-102) for WAC 173-526 Chapter 173-526 WAC - Cowlitz Water Resources Management Program - WRIA 26

https://ecology.wa.gov/rulemaking-proposal-wac-173-526-04-19-10

Rulemaking proposal (WAC 173-525)

This is a rulemaking proposal (CR-102) for WAC 173-525 Grays-Elochoman Instream Resources Protection and Water Management Program

https://ecology.wa.gov/rulemaking-proposal-wac-173-525

Rulemaking proposal continuance (WAC 173-525) 06/16/10

This is a rulemaking continuance for WAC 173-525 Grays-Elochoman Instream Resources Protection and Water Management Program

https://ecology.wa.gov/rulemaking-proposal-continuance-wac-173-525-06

Rulemaking Proposal Continuance (WAC 173-526) 06/16/10

This is a rulemaking proposal Continuance( CR-102) for WAC 173-526 Title.

https://ecology.wa.gov/rulemaking-proposal-continuance-wac-173-526-06-1

Rulemaking Notice of Withdrawal (WAC 173-503A) 02/14/05

This is a rulemaking notice of withdrawal for WAC 173-503A Instream Resources Protection Program Lower and Upper Skagit Water Resources Inventory Area (WRIAs 3 and 4)

https://ecology.wa.gov/rulemaking-notice-of-withdrawal-wac-173-503a-02

Rulemaking Emergency Adoption Notice (WAC 173-167) 06/04/2019

This is an emergency rulemaking adoption (CR-103E) for WAC 173-167 Emergency Drought Funding.

https://ecology.wa.gov/rulemaking-order-wac-173-167-06-04-2019

Rulemaking Announcement (WAC 173-566) 08/15/18

This is a rulemaking announcement (CR-101) Chapter 173-566 Streamflow Restoration Funding

https://ecology.wa.gov/rulemaking-announcement-wac-173-566-08-15-18

Rulemaking proposed language (WAC 173-526) 06/16/10

This is proposed rule language for WAC 173-526 Chapter 173-526 WAC - Cowlitz Water Resources Management Program - WRIA 26

https://ecology.wa.gov/rulemaking-proposed-language-wac-173-526-06-16-1

Rulemaking proposed language (WAC 173-525) 03/02/05

This is proposed rule language for WAC 173-525 Grays-Elochoman Instream Resources Protection and Water Management Program

https://ecology.wa.gov/rulemaking-proposed-language-wac-173-525-03-02-0

Rulemaking proposed language (WAC 173-566) 01/17/2019

This is proposed rule language for (WAC 173-566) Streamflow Restoration Funding 01/17/2019

https://ecology.wa.gov/rulemaking-proposed-language-wac-173-566-01-17-2

Rulemaking proposal CR-102 (173-166 WAC) 01/02/2018

This is a rulemaking proposal (CR-102) for WAC 173-166 Emergency Drought Relief

https://ecology.wa.gov/rulemaking-proposal-173-166-wac-01-02-2018

Rulemaking proposed language (WAC 173-166) 01/02/2018

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

https://ecology.wa.gov/rulemaking-proposed-language-wac-173-166-01-02-2

Rulemaking Proposal (WAC 173-557) 09/17/14

This is a rulemaking proposal (CR-102) for 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/rulemaking-proposal-wac-173-557-09-17-14

Rulemaking proposed language (WAC 173-555) 09/17/14

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

https://ecology.wa.gov/rulemaking-proposed-language-wac-173-555-09-17-1

Rulemaking proposed language (WAC 173-557) 09/17/14

This is proposed 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/rulemaking-proposed-language-wac-173-557-09-17-1

SEPA documentation (WAC 173-557) 09/17/14

This is SEPA documentation for 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/sepa-documentation-wac-173-557-09-17-14

Scientific Investigations Map 2095 (WAC 173-557; 173-555) 01/27/15

Scientific Investigations Map 2095 – Campbell, A.M. Groundwater Levels in the Spokane Valley-Rathdrum Prairie Aquifer, Spokane County, Washington and Bonner and Kootenai Counties, Idaho, September 2004 for 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/scientific-investigations-map-2095-wac-173-557;-1

CR-103 Adoption Notice

CR-103 Adoption Notice for WAC 173-167

https://ecology.wa.gov/rulemaking-emergency-adoption-notice-wac-173-167-07-24-2023

Rulemaking Emergency Adoption Notice (WAC 173-167) 08/14/24

[9:11 AM] Brooks, Barbara (ECY) This is an emergency rulemaking adoption (CR-103E) for WAC 173-167 Emergency Drought Funding

https://ecology.wa.gov/rulemaking-emergency-adoption-notice-wac-173-167-08-14-24