Kelsey Creek
Kelsey Creek in Bellevue's Crossroads neighborhood
Kelsey Creek (Washington) is located in Washington (state)
Kelsey Creek (Washington)
Location of the mouth of Kelsey Creek in Washington
Kelsey Creek (Washington) is located in the United States
Kelsey Creek (Washington)
Kelsey Creek (Washington) (the United States)
Location
CountryUnited States
StateWashington
RegionKing County
Physical characteristics
SourceLake Hills Greenbelt
 • locationBellevue, Washington
 • coordinates[1]
Mouth 
 • location
Lake Washington
 • coordinates
47°36′01″N 122°09′58″W / 47.60028°N 122.16611°W / 47.60028; -122.16611
 • elevation
16 ft (4.9 m)
Basin size17.0 sq mi (44 km2)[2]
Discharge 
 • average22.5 cu ft/s (0.64 m3/s)[3]
 • minimum1.9 cu ft/s (0.054 m3/s)
 • maximum832 cu ft/s (23.6 m3/s)

Kelsey Creek is a creek in Bellevue, Washington on Seattle's Eastside. Originating in the wetlands in the Lake Hills greenbelt between Phantom Lake and Larsen Lake, it flows north and west through the Crossroads neighborhood and then south to Kelsey Creek Park where it turns west and becomes the Mercer Slough just west of Interstate 405. The centerpiece of the largest wetland adjacent to Lake Washington at 367 acres (149 ha), the slough empties into the East Channel of Lake Washington at Interstate 90.

Drainage basin

The Kelsey Creek drainage basin is about 10,870 acres (4,400 ha),[2] including about 75% of the city of Bellevue in addition to a portion of Redmond.[4] Tributaries include Valley Creek, Goff Creek, the West Tributary, Sturtevant Creek, Richards Creek, East Creek, and Sunset Creek.[2] Kelsey Creek flows into the head of the Mercer Slough through a large concrete culvert which has been built to allow salmon to ascend easily via a few short drops of the creek.[4]

History

The Duwamish, whose main settlements were located in what is present day Renton and Seattle, maintained a small outpost settlement called Satskal along the Mercer Slough.[5]

An informational placard describing the recent hydrologic history of the Lake Hills greenbelt and its effect on Kelsey Creek

Originally the Kelsey Creek drainage basin included what is now Phantom Lake. In the late 1800s, however, farmer Henry Thode redirected the Phantom Lake outlet to Lake Sammamish, resulting in a reduced water flow to Kelsey Creek.[6]

For centuries, the Mercer Slough wetlands had been a swamp, marsh, and shallow water area, with the Mercer Slough itself being effectively a shallow inlet of Lake Washington. In 1894, a small sawmill operated at the upper end of the slough and both logs and processed timber would be floated down the slough to Lake Washington. At the time, the slough was both wide enough and deep enough to accommodate log rafts, launches, tugs, small steamers, and stern-wheelers.[7]

Following the completion of the Lake Washington Ship Canal and Hiram M. Chittenden Locks in 1917, the water level of Lake Washington was lowered 8.8 feet (2.7 m) exposing the lake bed along the course of the present-day slough. The Mercer Slough was partially dredged in the 1920s to make it navigable to small watercraft. Today, canoes can be rented to explore the lower waterway.[4]

The King County government and City of Bellevue began acquiring parcels in the Mercer Slough in 1957 for preservation of the wetlands and surrounding natural areas. By 1990, 311 acres (126 ha) had been purchased.[8]

See also

References

  1. ↑ U.S. Geological Survey Geographic Names Information System: Kelsey Creek
  2. 1 2 3 "Kelsey Creek (Sites 0444 D444)". Retrieved 2007-12-24.
  3. ↑ "Water Resources Data-Washington Water Year 2005; Lake Washington Basins" (PDF). USGS. Retrieved 3 August 2009.
  4. 1 2 3 Johnston, Greg (August 12, 1999). "Urban oasis: Mercer Slough offers quiet respite amid the concrete jungle". The Seattle Post-Intelligencer. Archived from the original on October 15, 2002. Retrieved January 22, 2018.
  5. ↑ Neiwert, David (2005). Strawberry Days. Palgrave Macmillan. p. 28. ISBN 978-1403967923.
  6. ↑ "Weowna Creek Restoration -- High Tech - Low Impact". Retrieved 2007-08-15.
  7. ↑ Williams, David B. (2016-11-21). "Jury rejects damage claim against King County for lowering of water levels caused by the Lake Washington Ship Canal in verdict announced on April 4, 1924". Historylink.org .
  8. ↑ Ervin, Keith (November 19, 1995). "Forever wet: Bellevue takes a walk on the wild side". The Seattle Times. p. 16.
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