The Tolt River is located in the western foothills of the Cascade Mountains in north central King County in the U.S. state of Washington. The river begins at the confluence of the North Fork Tolt and South Fork Tolt rivers. It flows southwest joining the Snoqualmie River near Carnation, Washington. The Tolt River watershed is part of the larger Snohomish River and Puget Sound drainage basin.
Map of the Tolt River highlighted in the Snohomish River watershed
|Source||North Fork Tolt River|
|⁃ location||USGS gage 12148500, near Carnation, WA|
|⁃ average||572 cu ft/s (16.2 m3/s)|
|⁃ minimum||53 cu ft/s (1.5 m3/s)|
|⁃ maximum||11,400 cu ft/s (320 m3/s)|
The South Fork Tolt watershed provides ~30% of the drinking water for Seattle area residents.
- U.S. Geological Survey Geographic Names Information System: Tolt River
- "Water Resources Data-Washington Water Year 2005; Snohomish River Basin" (PDF). USGS. Retrieved 5 August 2009.
- Bright, William (2004). Native American placenames of the United States. University of Oklahoma Press. p. 504. ISBN 978-0-8061-3598-4. Retrieved 11 April 2011.
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