Regulations & Permits
Use this portal to filter and search for all of our regulatory information.
We oversee many state and federal laws designed to protect Washington's land, air, and water. See our laws, rules, & rulemaking page for more information about our current rules and rulemaking.
Pasco Basin Groundwater Subarea
Rulemaking Announcement (WAC 173-135)
https://ecology.wa.gov/wac-173-135_-21-01
2022 Applicant Workshop Presentation
Streamflow restoration competitive grants applicant workshop presentation
https://ecology.wa.gov/workshop-presentation
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
Spokane River Minimum Instream Flow Recommendations (WAC 173-557; 173-555) 01/27/15
Spokane River Minimum Instream Flow Recommendations - Rusty Post, Ecology Watershed Planning August 1, 2012 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/spokane-river-minimum-instream-flow-recommendation
Spokane River Temperature Profile, Barker Road to Plantes Ferry Park (WAC 173-557; 173-555) 01/27/15
Spokane River Temperature Profile, Barker Road to Plantes Ferry Park, Guy Gregory and John Covert, Ecology Publication 06-11-005, September 2005 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/spokane-river-temperature-profile-barker-road-to
Streamflow Trends in the Spokane River and Tributaries (WAC 173-557; 173-555) 01/27/15
Streamflow Trends in the Spokane River and Tributaries, Spokane Valley/Rathdrum Prairie, Idaho and Washington, United States Geological Survey, Scientific Investigations Report 2005-5005 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/streamflow-trends-in-the-spokane-river-and-tributa
Surface-Water/Ground-Water Interaction (WAC 173-557; 173-555) 01/27/15
Surface-Water/Ground-Water Interaction of the Spokane River and the Spokane Valley/Rathdrum Prairie Aquifer, Idaho and Washington, United States Geological Survey, Water Resources Investigations Report 03-4239U 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/surface-water-ground-water-interaction-wac-173-55
Watershed Management Plan Water Resource Inventory Area 55 (WAC 173-557; 173-555) 01/27/15
Watershed Management Plan Water Resource Inventory Area 55 - Little Spokane River & Water Resource Inventory Area 57 - Middle Spokane River, Prepared by: Spokane County regarding rulemaking 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/watershed-management-plan-water-resource-inventory
Summary preliminary draft permit changes Sand and Gravel General Permit.
This document provides a summary of the proposed changes in the Preliminary Draft Sand & Gravel General Permit.
https://ecology.wa.gov/summary-preliminary-draft-permit-changes
StevensCountyWaterBankProposal
Summary of Water Bank Proposal put forth by Stevens County
https://ecology.wa.gov/water-bank-proposal-summary-stevens-county
Changes to existing water rights
If you want to change to an existing water right, we recommend a pre-application consultation.
https://ecology.wa.gov/regulations-permits/permits-certifications/water-right-permits/changes-to-existing-water-rights
Characterization of Stormwater Transport of Contaminants of Emerging Concern
We work with City of Tacoma to look for several contaminants of emerging concern in stormwater.
https://ecology.wa.gov/regulations-permits/reporting-requirements/stormwater-monitoring/stormwater-action-monitoring/sam-effectiveness-studies/stormwater-characterization
Chapter 173-167 WAC Emergency Drought Funding (2021)
This is the emergency rulemaking page for Chapter 173-167 WAC.
https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/closed-rulemaking/wac-173-167-2021
Chapter 173-501 WAC
On May 27, 2020, Ecology adopted amendments to Chapter 173-501 WAC.
https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/closed-rulemaking/wac-173-501
Chapter 173-503A WAC
This is the rulemaking page for Chapter 173-503A WAC.
https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/closed-rulemaking/wac-173-503a-feb15
Chapter 173-525 WAC
This is the rulemaking page for Chapter 173-525 WAC.
https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/closed-rulemaking/wac-173-525-mar05
Chapter 173-526 WAC
This is the rulemaking page for Chapter 173-526 WAC.
https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/closed-rulemaking/wac-173-526-mar05
Chapter 173-167 WAC Emergency Drought Funding (2023)
This is the rulemaking page for Chapter 173-167 WAC.
https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/closed-rulemaking/wac-173-167-2023
Chapter 173-167 WAC, Emergency Drought Funding (2025)
On April 8, 2025, Ecology adopted amendments to Chapter 173-167 WAC Emergency Drought Funding
https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/rulemaking/wac-173-167-2025
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