Bellevue's Streams, Lakes and Wetlands
Streams, lakes and wetlands are areas protected from development, and are part of Bellevue's natural watersheds, drainage basins and drainage areas.
Bellevue, bordered by two large lakes, has over 80 miles of streams, more than 800 acres of wetlands, and three small lakes: Phantom Lake, Larsen Lake and Lake Bellevue.
Bellevue's storm drains and stormwater system capture rainwater across these drainage areas in a series of pipes, streams, culverts and ditches which connect to our streams and wetlands.
Our networked stormwater system prevents flooding and erosion in the city. Rainwater, or runoff, that enters the stormwater system flows directly - without any filtration or treatment - into Lake Sammamish and Lake Washington.
Help ensure our streams, lakes and wetlands stay healthy
Our local streams, wetlands and lakes provide habitat for wildlife, natural beauty within our city, and many types of outdoor recreation for residents and visitors. Remember: Only Rain Down the Drain.
- In Bellevue it's illegal to remove plants from or disturb stream corridors. Please call Development Services 425-452-4188 for more information.
- If you see signs of pollutant spills near a storm drain or water body, flooding, water main breaks, sewer overflows, please call Utilities on our 24/7 hotline at 425-452-7840.
- Blue-green algae is a common water concern. The Washington State Freshwater Monitoring Program offers details and directions for reporting.
Report 24-hour emergencies and utilities maintenance
To report flooding, water main breaks, sewer overflows and pollutant spills, call our 24/7 hotline at 425-452-7840, or fill out the My Bellevue Customer Assistance Form on our webpage with the details. You can also download My Bellevue App to make a report and send us photos right from your phone.