Surface Water Management
The Public Works Department works to ensure the continuous operation and performance of surface water and stormwater systems in the City of Woodinville. Managing stormwater is important to reduce flooding in our streets and prevent property damage. Stormwater management also protects our local creeks and the Sammamish River by minimizing the impacts of pollution on local water quality.
What is Stormwater?
Stormwater is rain and other precipitation including hail, sleet, and snow. When stormwater falls on hard or paved surfaces like roads and parking lots, it cannot soak into the ground. These types of hard or paved surfaces are called impervious surfaces. Water that falls on these surfaces becomes stormwater runoff.
Stormwater runoff collects pollutants from car fluids and debris from roads, industrial activities, pet waste, dirt and leaves, trash and litter, chemicals, spills, and many more sources and flows downhill into storm drains. Storm drains collect stormwater runoff and empty directly into our creeks, wetlands, and the Sammamish River. These waterways feed into Lake Washington and the Puget Sound.
Prevent Stormwater Pollution
Clean water is essential for healthy habitats for fish and wildlife. Learn how you can help prevent stormwater pollution.Link to page
Stormwater Permit (NPDES)
The City of Woodinville is required to have a National Pollution Discharge Elimination System (NPDES) Western Washington Phase II Municipal Stormwater Permit. The NPDES program was created under the federal Clean Water Act to regulate point sources that discharge pollutants to waters of the United States. These permits are issued and enforced by the Department of Ecology in Washington.Link to page
The City of Woodinville owns and operates a surface water utility that collects, carries, and treats surface water (primarily rain/snow runoff from streets) before being discharged into waterways. This utility manages surface water flows and protects water quality and public health.Link to page
Stormwater Management Plan
The Comprehensive Stormwater Management Plan provides a 10-year overview and recommendations for managing stormwater within the City. The Plan sets priorities for stormwater capital improvement projects and makes recommendations based on the health of our natural waterways, maintenance requirements, and hydrologic and hydraulic models of our stormwater system.Link to page
Storm Drain Maintenance
City crews work hard to keep storm drains clear and free of leaves and debris, but with thousands of drains in Woodinville, we could use your help.Link to page