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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 |
OMAK CREEK NEAR OMAK | 173cfs |
WILSON CREEK BELOW CORBETT DRAW NEAR ALMIRA | 20cfs |
OKANOGAN RIVER NEAR TONASKET | 3810cfs |
COAL CREEK AT MOHLER | 5cfs |
CRAB CREEK NEAR MOSES LAKE | 21cfs |
OKANOGAN RIVER AT MALOTT | 4220cfs |
CRAB CREEK AT IRBY | 101cfs |