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Bellevue has 25 drainage basins – areas of land that each drain to a stream or lake. City staff have prepared fact sheets that offer a snapshot of the built and natural conditions in each drainage basin.
Drainage basins are small watersheds, and have natural boundaries defined by the shape of the land and the flow of the water; smaller watersheds become part of larger watersheds. Each basin in Bellevue eventually drains to either Lake Sammamish or Lake Washington. Bellevue lies within the larger Lake Washington/Cedar/Sammamish watershed that drains to Puget Sound.
Data and Information
Data and Information on Bellevue stream conditions can be requested by contacting Bellevue Utilities Environmental Monitoring Program at EMP@bellevuewa.gov.
