Thurston County facilities are open to the public with safety measures to slow the spread of COVID-19 and protect public and employee health. Learn more here.
There are many types of stormwater facilities. Common types are pictured below. They often look like natural features, but are engineered to move runoff away from homes and streets, and filter out pollution like vehicle fluids and lawn chemicals before it flows into our drinking water aquifers, streams, rivers, lakes or Puget Sound. For more information, see How to Identify and Maintain Your Neighborhood Stormwater Facility.
Culverts & PipesA culvert is a pipe under the road. It simply connects one ditch to another and is open to the environment on either end. A pipe is attached to a structure (like a catch basin or pond) on at least one end. Learn more about Pipes, Culverts & Slotted Drains and Level Spreader & Diffusers.
Low Impact Development (LID) features These features tend to look more natural while still providing flood-control and
filtration processes and include: