SNOFLO
 



NORTH

RESERVOIR LEVELS
Rock Dam Upper Grand Coulee River
April 21, 2025


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North is a federal dam located in Soap Lake, Washington, along the Upper Grand Coulee River. Built in 1950 by the Bureau of Reclamation, it serves multiple purposes including flood risk reduction, hydroelectric power generation, irrigation, and navigation. The dam is of earth type with a height of 145 feet and a length of 1450 feet, providing a storage capacity of 1,275,000 acre-feet.

With a hazard potential classified as high and a risk assessment rating of 2, North is a crucial structure for water resource management in the region. Despite its age, the dam's condition assessment is not available, highlighting the need for regular inspections and maintenance to ensure its continued safety and functionality. The Emergency Action Plan (EAP) for North was last revised in June 2020, indicating preparedness for potential emergencies.

Managed by the Bureau of Reclamation, North plays a significant role in the water infrastructure of Grant County, Washington. With its strategic location and multiple functions, the dam underscores the importance of sustainable water resource management and adaptation to climate change in the region.

Year_Completed 1950
Dam_Height 145
River_Or_Stream UPPER GRAND COULEE RIVER
Dam_Length 1450
Primary_Dam_Type Earth
Surface_Area 27000
Hydraulic_Height 77
Drainage_Area 263
Nid_Storage 1275000
Structural_Height 145
Hazard_Potential High
Foundations Rock
Nid_Height 145
       

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