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City of Bellevue, WA Utilities
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West Tributary Basin Drainage Details

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    Drainage Basins

    • Ardmore Area Drainage Details
    • Beaux Arts Area Drainage Details
    • Clyde Beach Area Drainage Details
    • Coal Creek Basin Details
    • Goff Creek Basin Drainage Details
    • Kelsey Creek Basin Drainage Details
    • Lakehurst Area Drainage Details
    • Lewis Creek Basin Drainage Details
    • Mercer Slough Basin Drainage Details
    • Meydenbauer Creek Basin Drainage Details
    • Newport Area Drainage Details
    • North Sammamish Area Drainage Details
    • Phantom Creek Basin Drainage Details
    • Richards Creek Basin Drainage Details
    • Rosemont Area Drainage Details
    • Sears Creek Basin Drainage Details
    • South Sammamish Area Drainage Details
    • Spirit Ridge Area Drainage Details
    • Sturtevant Creek Basin Drainage Details
    • Sunset Creek Basin Drainage Details
    • Valley Creek Basin Drainage Details
    • Vasa Creek Basin Drainage Details
      • Technical Memos
    • West Tributary Basin Drainage Details
    • Wilkins Creek Basin Drainage Details
    • Yarrow Creek Basin Details
    • Combined Drainage Basins
      • City of Bellevue
      • Greater Coal Creek Basin
      • Greater Kelsey Basin
      • North Sammamish Basins
      • Small Lake Washington Basins
    Header Image
    Conservation Banner 6-14-17.jpg

    Lake Washington Watershed (WRIA 8) / State Stream #08-0264

    Updated: July 2017

    The City of Bellevue does not guarantee that the information on this map is accurate or complete. This data is provided on an "as is" basis and disclaims all warranties.

    BasinFactSheet_West Tributary.jpg

    Please check out the PDF fact sheet version

    Land Characteristics

    Basin Area

    963 Total Acres

    City Area

    4.5%

    Drainage Jurisdiction(s)

    Bellevue: 100.0%

    Beaux Arts: 0.0%

    Clyde Hill: 0.0%

    Issaquah: 0.0%

    King County: 0.0%

    Kirkland: 0.0%

    Medina: 0.0%

    Newcastle: 0.0%

    Redmond: 0.0%

    Renton: 0.0%

    Lowest Elevation

    27 Ft

    Highest Elevation

    496 Ft

    Total Length of Open Channel

    3.4 Miles

    Total Length of Storm Drainage Pipes:

    18 Miles

    Salmon Present in the Basin

    • Chinook*+
    • Coho+
    • Sockeye
    • Cutthroat Trout

    * Listed Federal Endangered Species
    + City Species of Local Importance (Bellevue Land Use Code 20.25H.150A)

    Population

    The population density in Bellevue ranges from 1,344 to 9,851 people per square mile.

    Basin Population (2016)

    2,903

    % of all Basins

    1.9%

    Basin Population Density

    1,928 People per Square Mile

    Land Use

     Entire BasinWithin Bellevue
    Public Right of Way15.8%15.8%
    Commercial/Office15.4%15.4%
    Industrial10.2%10.2%
    Institutional/Government4.0%4.0%
    Mixed Use/Misc9.4%9.4%
    Multi-Family1.2%1.2%
    Open Space/Park9.3%9.3%
    Single Family Residential30.1%30.1%
    Unknown4.5%4.5%

    Land Cover

     Entire BasinWithin Bellevue
    Impervious47.5%47.5%
    Tree Canopy35.7%35.7%
    Impervious in 100 Ft Stream Buffer28.4%28.4%
    Tree Canopy in 100 Ft Stream Buffer48.9%48.9%

    Reasonable Accommodation

    For alternate formats, interpreters, or reasonable modification requests please phone at least 48 hours in advance 425-452-6800 (voice) or email servicefirst@bellevuewa.gov. For complaints regarding modifications, contact the City of Bellevue ADA, Title VI, and Equal Opportunity Officer at ADATitleVI@bellevuewa.gov.

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