Air quality studies
Information about air quality studies we conduct.
TMDL Fact Sheet for the Quincy Industrial Waste Treatment Facility
BEACH annual report
See our annual county-by-county report on bacterial levels at saltwater swimming beaches for 2022.
Marine water & sediment monitoring
We conduct water and sediment long-term monitoring to identify ecosystem changes.
Jellyfish in Puget Sound
Jellyfish numbers may be increasing in Puget Sound. You can help us monitor them.
Marine algae & plankton
Marine algae blooms are overgrowths of plankton. They can look like a spill in the water.
River & stream flow monitoring methods
We measure water's width, depth, and speed in rivers and streams to compute streamflow.
Mapping Puget Sound bluffs and beaches
We collect topographic data about Puget Sound beaches and bluffs.
Story Maps: Sediment Quality in Puget Sound
This series of colorful, interactive story maps describes the work of our Marine Sediment Monitoring Team. These scientists conduct long-term monitoring to assess and determine change over time in the condition of Puget Sound sediments and the animals that live in them.
Manning's n calculator
An Excel/VBA program to calculate Manning's n (or depth) from cross-section data for trapezoidal or rectangular channels based on equation 14.32 in Chapra's Surface water quality modeling textbook.
Freshwater Aquatic Plants Manual
An illustrated guide to some of the more common freshwater aquatic plants found in Washington, such as hydrilla, milfoil, pondweeds, bladderworts, and more.
Dioxin Study Technical Memo
This is a PDF file that summarizes well testing results in the Lower Yakima Valley.