Greater Coal Creek Basin

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Lake Washington Watershed (WRIA 8)

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.

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Please check out the PDF fact sheet version

Land Characteristics

Basin Area
4,551 Total Acres
City Area
13.2%
Drainage Jurisdiction(s)
Bellevue: 62.6%
Beaux Arts: 0.0%
Clyde Hill: 0.0%
Issaquah: 0.0%
King County: 23.4%
Kirkland: 0.0%
Medina: 0.0%
Newcastle: 13.9%
Redmond: 0.0%
Renton: 0.0%
Lowest Elevation
18 Ft
Highest Elevation
1,563 Ft
Total Length of Open Channel
20.0 Miles
Total Length of Storm Drainage Pipes:
65.7 Miles

Salmon Present in the Basin

  • Chinook*+
  • Coho+ (juveniles)
  • Sockeye
  • Rainbow & Cutthroat Trout
  • Steelhead
  • Coho+

* 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)
17,699
% of all Basins
11.7%
Basin Population Density
2,489 People per Square Mile

Land Use

Entire Basin Within Bellevue
Public Right of Way 11.1% 15.6%
Commercial/Office 7.1% 0.5%
Industrial 1.2% 0.0%
Institutional/Government 2.0% 2.5%
Mixed Use/Misc 4.1% 5.3%
Multi-Family 0.4% 0.2%
Open Space/Park 36.8% 20.3%
Single Family Residential 34.5% 51.2%
Unknown 3.0% 4.4%

Land Cover

Entire Basin Within Bellevue
Impervious 23.0% 32.0%
Tree Canopy 55.0% 44.8%
Impervious in 100 Ft Stream Buffer 8.2% 9.9%
Tree Canopy in 100 Ft Stream Buffer 86.2% 83.2%