Washington's ocean and shorelines are integral to the regions character, quality of life, and economic viability. We work in partnership to protect and restore important habitats and ocean resources, ...

We estimate there are thousands of abandoned wells in Washington. If you find an abandoned well on your property, you are required to work with a licensed well driller to properly close it up, a ...

The Salish Sea Model was developed by Pacific Northwest National Laboratory (PNNL) in collaboration with scientists within our Environmental Assessment Program. The model is a powerful computerized ...

The Washington state well report (log) viewer, our most popular online resource, allows you to search for and view detailed records of the construction and subsurface characteristics of individual ...

The background section of the SEPA environmental checklist helps applicants, agencies, and reviewers fully understand all aspects of a proposal, including related activities. Lead agencies use this ...

a. What designated and informal recreational opportunities are in the immediate vicinity? This information helps reviewers better understand a development project's community impacts. Applicants ...

We finalized the South Fork Nooksack temperature total maximum daily load (TMDL) report in Feb. 2020. A public comment period on the draft TMDL report took place from Sept. 12 through Nov. 20, 2018.

Select your region Central Region – Chelan, Douglas, Kittitas, Klickitat, and Okanogan Counties Eastern Region – Adams, Asotin, Columbia, Ferry, Franklin ...

We have requirements for advance notice of oil transfers (ANT) to help prepare for and prevent oil spills to Washington's environment. Our rules establish requirements for bulk oil transfers over ...

Many saltwater swimming beaches are regularly tested for high levels of bacteria, and local health jurisdictions may issue advisories based on these test results. Check for signs, sign up for our ...

Ecology and our local partners track air emissions to make sure outdoor nitrogen dioxide levels are in the healthy range according to national standards. Nitrogen dioxide can irritate your lungs and ...

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 ...