Search Results - Washington State Department of Ecology

Wetland program plan

See what we hope to accomplish in our strategic plan for the state's wetland program.

https://ecology.wa.gov/water-shorelines/wetlands/tools-resources/wetland-program-plan

Our Environmental Assessment Program is the science arm of our agency.

https://ecology.wa.gov/about-us/who-we-are/our-programs/environmental-assessment

Voluntary Clean Water Guidance for Agriculture

We're working with an advisory group to develop clean water guidance for agriculture.

https://ecology.wa.gov/about-us/accountability-transparency/partnerships-committees/voluntary-clean-water-guidance-for-agriculture-adv

Thurston County Shoreline Master Program: Comprehensive Update & Periodic Review

The public comment period for Thurston County's proposed update to its SMP is closed.

https://ecology.wa.gov/water-shorelines/shoreline-coastal-management/shoreline-coastal-planning/state-approved-shoreline-master-programs/thurston-county

Temperature pollution

We are working to protect and restore riparian habitat and other practices to help keep Washington's waters cool.

https://ecology.wa.gov/water-shorelines/water-quality/nonpoint-pollution/temperature-pollution

Riparian education

Educational resources for understanding riparian systems, climate resiliency, and where to learn more.

https://ecology.wa.gov/ecologys-work-near-you/river-basins-groundwater/puget-sound/helping-puget-sound/riparian-restoration/riparian-education

Nonpoint pollution

We identify and reduce sources of polluted runoff as part of our Clean Water Act responsibilities.

https://ecology.wa.gov/water-shorelines/water-quality/nonpoint-pollution

Frequently asked questions (FAQs)

FAQs and responses about the WRIA 1 (Nooksack) adjudication.

https://ecology.wa.gov/water-shorelines/water-supply/water-rights/adjudications/nooksack/faqs

Reporting & notification requirements

Get answers to common questions about reporting requirements of the municipal stormwater permits.

https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/stormwater-permittee-guidance-resources/municipal-stormwater-permit-guidance/reporting

Lower Yakima Valley Groundwater Management Area

We're partnering in a local effort to reduce nitrate concentrations in Lower Yakima Valley wells.

https://ecology.wa.gov/ecologys-work-near-you/river-basins-groundwater/lower-yakima-valley-groundwater-management-area

Nooksack River basin rule amendment

In 2020 we amended the existing instream flow rule for the Nooksack basin.

https://ecology.wa.gov/water-shorelines/water-supply/protecting-stream-flows/instream-flow-implementation/nooksack-basin-rule

2025 National Coastal Wetlands Conservation Grant Awards

2025 National Coastal Wetlands Conservation Grants fund critical wetland conservation projects.

https://ecology.wa.gov/about-us/payments-contracts-grants/grants-loans/find-a-grant-or-loan/wetlands-conservation-grants/wetlands-conservation-grant-awards

Seawater intrusion

Some coastal water wells in Washington are now unusable because of seawater intrusion. Read more about this.

https://ecology.wa.gov/water-shorelines/water-supply/water-rights/seawater-intrusion

Eastern Washington water projects

Our water supply and enhancement projects are providing water security in Eastern Washington.

https://ecology.wa.gov/water-shorelines/water-supply/water-supply-projects-ew

Reducing nutrients in Puget Sound

Working on a plan to reduce nutrients in Puget Sound to improve water quality for dissolved oxygen.

https://ecology.wa.gov/ecologys-work-near-you/river-basins-groundwater/puget-sound/helping-puget-sound/reducing-puget-sound-nutrients

Wetlands & climate change

Wetlands are important for mitigating and adapting to the effects of climate change.

https://ecology.wa.gov/water-shorelines/wetlands/tools-resources/wetlands-climate-change

Advance permittee-responsible mitigation

Advance mitigation is one available option to compensate for unavoidable impacts to wetlands.

https://ecology.wa.gov/water-shorelines/wetlands/mitigation/advance-mitigation

Swift Creek project

The Swift Creek flood control and sediment management project will keep naturally-occurring asbestos out of the Sumas river.

https://ecology.wa.gov/spills-cleanup/contamination-cleanup/sediment-cleanups/swiftcreek

Clean Water State Revolving Fund (CWSRF) funding requirements

Helpful resources for people who receive Clean Water State Revolving Funds.

https://ecology.wa.gov/water-shorelines/water-quality/water-quality-grants-and-loans/cwsrf-funding-requirements

Eightmile Dam rebuild & restoration

Repair and restoration of the Eightmile Dam is undergoing environmental review.

https://ecology.wa.gov/ecologys-work-near-you/river-basins-groundwater/icicle-creek-strategy/eightmile-dam

Wetland mapping resources

We are committed to providing public access to wetland maps and geospatial data.

https://ecology.wa.gov/water-shorelines/wetlands/tools-resources/mapping-resources

Updates to the surface water quality standards

We update our water quality standards through rulemaking and the triennial review.

https://ecology.wa.gov/water-shorelines/water-quality/water-quality-standards/updates-to-the-standards

Watershed plan implementation and flow achievement grants

Find information about watershed implementation and flow achievement grants.

https://ecology.wa.gov/about-us/payments-contracts-grants/grants-loans/find-a-grant-or-loan/watershed-planning-grants

Streamflow restoration competitive grants

We manage a grant program for streamflow restoration (Chapter 90.94 RCW) implementation projects.

https://ecology.wa.gov/about-us/payments-contracts-grants/grants-loans/find-a-grant-or-loan/streamflow-restoration-implementation-grants

Coastal Protection Fund – Terry Husseman Account Grants

Grants for projects that restore or enhance the environment.

https://ecology.wa.gov/about-us/payments-contracts-grants/grants-loans/find-a-grant-or-loan/coastal-protection-fund

Water resources drought response grants

We are currently accepting applications for drought response grants.

https://ecology.wa.gov/about-us/payments-contracts-grants/grants-loans/find-a-grant-or-loan/drought-emergency-grants

Drought Planning and Preparedness Grants

Applications were accepted Jan. 16 - March 14, 2024.

https://ecology.wa.gov/about-us/payments-contracts-grants/grants-loans/find-a-grant-or-loan/drought-planning-and-preparedness-grants

Water quality combined funding program

Funding for projects to improve water quality & information for potential applicants.

https://ecology.wa.gov/about-us/payments-contracts-grants/grants-loans/find-a-grant-or-loan/water-quality-combined

Flood control assistance account program (FCAAP)

Flood Control Assistance Account Program (FCAAP)

https://ecology.wa.gov/about-us/payments-contracts-grants/grants-loans/find-a-grant-or-loan/flood-control-assistance

Bellingham Olympic Pipe Line explosion - 10 years later

Bellingham Olympic Pipe Line Explosion

https://ecology.wa.gov/spills-cleanup/spills/spill-preparedness-response/responding-to-spill-incidents/spill-incidents/bellingham-olympic-pipe-line-explosion

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

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 173-501 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 173-201A WAC (Outstanding Resource Waters)

This is the rulemaking page for Chapter 173-201A WAC.

https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/closed-rulemaking/wac-173-201a-outstanding-resource-waters