We monitor water quality at nearly 100 river and stream stations throughout the state to understand the health of waterways. Our science offers residents and policymakers credible data to make ...

To keep yourself and your pets safe, avoid water with visible algae and follow all posted warnings and closures.

You are invited to comment on the 2025 update to Washington's Water Quality Management Plan to Control Nonpoint Sources of ...

This low-growing plant is a sure sign of spring and probably the most well-known wetland plant in Washington. Skunk cabbage, also known as swamp lantern, has a strong odor and is one of the first ...

Precipitation has been near normal, but that is largely due to a wet fall. Precipitation since January has been 78% statewide ...

You're invited to review and provide comments on Clean Vehicles Program rulemaking documents. Ecology is considering amendments to Chapter 173-423 WAC, the Clean Vehicles Program rule. Washington law ...

We propose to approve Animal Clinic of Walla Walla’s air quality notice of construction (NOC) application. We will hold a public comment period if one is requested. Animal Clinic of Walla Walla ...

A Business Organics Management Area (BOMA) is a place where both of the following conditions are met: Businesses have access to year-round curbside collection for food waste and organic materials. The ...

A brownfield is a property that’s been developed in the past, and is now vacant, abandoned, or underutilized. It may have environmental contamination.

Two electric Volvo VNR semi-truck cabs charge at a truck depot near the Port of Long Beach. These drayage trucks help move Amazon's goods from the port to local warehouses. The Washington Department ...

We are updating the Snake River - Lower Granite Pool Geographic Response Plan (GRP). An important part of the update process is hearing from the people who live, work, and play in the GRP area. To ...