Whitestone Lake Dam is a private rockfill dam located in Tonasket, Washington, along the Tr-Okanogan River.
Wind
Humidity
Completed in 1930, this dam primarily serves the purpose of recreation and irrigation, with a storage capacity of 2,720 acre-feet and a surface area of 192 acres. The dam stands at a hydraulic height of 9 feet and a structural height of 8 feet, providing low hazard potential and has not been rated for its condition assessment.
Owned by a private entity, Whitestone Lake Dam is regulated by the Washington Department of Ecology and is subject to state jurisdiction, permitting, inspection, and enforcement. The dam has a maximum discharge capacity of 825 cubic feet per second and is located in Congressional District 04, Washington, represented by Dan Newhouse. Despite lacking certain structural information such as dam volume and spillway type, Whitestone Lake Dam remains an important water resource in Okanogan County, Washington, supporting both recreational and agricultural activities in the region.
With its historical significance and ongoing role in water management, Whitestone Lake Dam serves as a vital asset for the community. While its condition assessment is incomplete, the dam's low hazard potential and adherence to state regulations ensure its continued operation for irrigation, recreation, and water resource management. As climate change continues to impact water resources, Whitestone Lake Dam exemplifies the importance of maintaining and monitoring infrastructure to meet the evolving needs of both humans and the environment in the face of a changing climate.
Year Completed |
1930 |
Dam Length |
375 |
River Or Stream |
Tr-Okanogan River |
Primary Dam Type |
Rockfill |
Surface Area |
192 |
Hydraulic Height |
9 |
Drainage Area |
13.8 |
Nid Storage |
2720 |
Structural Height |
8 |
Hazard Potential |
Low |
Foundations |
Rock, Soil |
Nid Height |
9 |
Okanogan River At Oroville
|
347cfs |
Okanogan River Near Tonasket
|
5320cfs |
Similkameen River Near Nighthawk
|
6000cfs |
Omak Creek Near Omak
|
7cfs |
Andrews Creek Near Mazama
|
31cfs |
Kettle River Near Ferry
|
414cfs |
| Location | Reservations | Toilets |
|---|---|---|
Palmer Mountain
|
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Aeneas Lake - WDFW
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Conners Lake - WDFW
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Conners Lake
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Forde Lake - WDFW
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Forde Lake
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