The Walla Walla basin extends into both Washington and Oregon, and crosses Tribal boundaries. The basin has a long history of challenges with water availability, including over appropriation of water ...

Our new Puget Sound Climate Resilient Riparian Systems grant program was developed in partnership with the Washington State Conservation Commission and Bonneville Environmental Foundation. Program ...

Registration is now open for the 19th annual Oregon-Washington Water Year 2024 Recap and 2025 Outlook Meeting. The virtual meeting will take place on Tuesday, October 29, 2024 (9 am-12:15 pm PST) and ...

Old orchards in Central Washington left lead and arsenic in soil. Builders must check land history, test soil, cleanup ...

Ecology seeking public comments to help shape the future for solar and onshore wind energy facilities in Washington.

Human health criteria are pollution limits on toxic substances that are set to protect people who eat fish and shellfish and drink untreated water from long-term health effects of pollution in rivers, ...

We conduct long-term monitoring of water and sediment to identify ecosystem changes in Puget Sound, Grays Harbor, and Willapa Bay using a variety of instruments and sampling gear deployed from ...

We improve and protect water quality, manage and conserve water resources, and effectively manage coastal and inland shorelines to assure our state has sufficient supplies of clean water for ...

Explore our eight study regions to discover what we are learning about health of Washington's river and stream habitats. See text below the map for more study details. B-IBI is an acronym for the ...

CLARC July 2024 updates are now online. Cleanup Levels and Risk Calculation (CLARC) is a compendium of technical information related to calculating cleanup levels under Washington's Cleanup Rule, the ...

We document and assess current conditions and long-term changes in the diverse marine regions of our state with modern sensors and widely recognized methods, in order to understand natural and human ...

Map based searches using coordinates or any of nine other tools to navigate the map and retrieve map data. Text based water right record searches, using up to 24 different input fields to construct ...