Surface Water Utility Engineering

Contact Information
Surface Water Utility
Renton, WA 98057
425-430-7241

Surface Water Utility Engineering is responsible for maintaining and improving the quality of the lakes and rivers in the City of Renton. This division is responsible for planning, permitting, design and construction of capital improvement projects, policy development, design standards for new development, customer service for drainage complaints, public education, flood hazard monitoring and response assistance during flood events.

Stormwater is rainwater. Surface water is lakes, rivers, ponds and other water collection areas. Stormwater eventually empties into surface waters, so it is important that the stormwater be as clean as possible. Managing stormwater and surface water protects and improves the quality of our lakes, streams and rivers and helps to control flooding.

For surface water related emergencies, such as plugged drains or flooding, call Public Works Maintenance at 425-430-7400. After 3:30 p.m. or on weekends, contact the Renton Police Department's non-emergency number, 425-430-7500, option #8.

Drainage Issues

See a recurring drainage problem? Site visits to investigate recurring drainage problems and local flooding are made by the surface water utility upon your request. Contact surface water utility at 425-430-7392.

Homes in danger of flooding

Owners of home in danger of flooding should call maintenance services division, 425-430-7400to report the condition and obtain assistance.

Emergencies

For emergencies after 3:30 p.m. or on weekends, and if the emergency cannot wait until the next business day, call the Renton Police Department, 425-430-7500.

FEMA Floodplain Mapping

As part of Federal Emergency Management Agency's (FEMA) nationwide effort to update and to convert all flood insurance rate maps into digital flood insurance rate maps, FEMA published Preliminary Digital Flood Insurance Rate Maps.

Flooding Emergencies

Floods are one of the most common hazards in the United States and can be caused by weather conditions such as heavy rainfall associated with severe storms, melting snow and ice. Flood effects can be local, impacting a small area, neighborhood, entire community or regional. Floods can occur anywhere under the right conditions and are highly unpredictable.

The National Weather Service monitors incoming storms and weather conditions in an effort to provide some warning if flooding is probable. What is difficult to estimate is the amount of water that could be seen and the direction it might take, so everyone needs to take a reasonable approach to the risk and prepare now.

Owners of homes in danger of flooding should call the maintenance services division at 425-430-7400 to report the condition and obtain assistance.

Twenty-four hour emergency service is available for flooding, hazardous road conditions, down or damaged stop or yield signs, no water, sewer overflows, and water main breaks.

For emergencies after 3:30 p.m. or on weekends, and if the emergency cannot wait until the next business day, call the Renton Police Department at 425-430-7500.

NPDES Phase II Municipal Stormwater Permit

The National Pollutant Discharge Elimination System (NPDES) Phase II Municipal Stormwater Permit took effect on August 1, 2013, by the Washington State Department of Ecology under the provisions of the U.S. Environmental Protection Agency's Clean Water Act. There are a total of 80 cities and five counties in Western Washington that have to comply with the permit.

The permit has specific requirements and deadlines for implementation of programs to minimize the discharge of pollution from municipal stormwater systems into our streams, lakes, rivers and wetlands to protect their beneficial uses (swimming, boating, fishing, aesthetics) and other environmental resources.

Pond Maintenance

Stormwater ponds are important facilities that protect streams and rivers by improving water quality and by buffering high runoff flows. Ponds prevent sedimentation and erosion of natural streams and creeks, and prevent flooding in the streets, if they are maintained.

Watersheds - Green/Duwamish River and Cedar River/Lake Washington

Watersheds are a basin-shaped area that drains into a river, lake, or the ocean. It includes freshwater (ground and surface) as well as saltwater from Puget Sound. Large watersheds can include two or more smaller watersheds or basins, since large rivers are made up of smaller rivers and streams that flow together.

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