Coal Creek Basin Details

Lake Washington Watershed (WRIA 8) / State Stream #08-0268

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.

Please check out the PDF fact sheet version

Land Characteristics

Basin Area
3,978 Total Acres
City Area
11.1%
Drainage Jurisdiction(s)
Bellevue: 59.9%
Beaux Arts: 0.0%
Clyde Hill: 0.0%
Issaquah: 0.0%
King County: 26.8%
Kirkland: 0.0%
Medina: 0.0%
Newcastle: 13.4%
Redmond: 0.0%
Renton: 0.0%
Lowest Elevation
18 Ft
Highest Elevation
1,563 Ft
Total Length of Open Channel
18.4 Miles
Total Length of Storm Drainage Pipes:
53.9 Miles

Salmon Present in the Basin

  • Chinook*+
  • Coho+
  • Sockeye
  • Rainbow & Cutthroat Trout
  • Steelhead

* 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)
12,996
% of all Basins
8.6%
Basin Population Density
2,091 People per Square Mile

Land Use

Entire Basin Within Bellevue
Public Right of Way 10.0% 49.2%
Commercial/Office 8.0% 0.2%
Industrial 1.3% 0.0%
Institutional/Government 1.7% 1.3%
Mixed Use/Misc 4.4% 3.6%
Multi-Family 0.3% 0.0%
Open Space/Park 40.8% 13.5%
Single Family Residential 30.6% 29.5%
Unknown 2.9% 2.6%

Land Cover

Entire Basin Within Bellevue
Impervious 20.9% 30.2%
Tree Canopy 58.9% 47.5%
Impervious in 100 Ft Stream Buffer 8.3% 7.3%
Tree Canopy in 100 Ft Stream Buffer 85.7% 59.0%
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