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Located in Johnson, Wyoming, the Pine Dale dam on the Dry Fork of Powder River serves multiple purposes including fire protection, stock, and small fish pond management. Constructed in 1940, this earth dam stands at a height of 15 feet with a hydraulic height of 10 feet and a length of 778 feet. With a storage capacity of 122 acre-feet, the dam provides essential water resources for the region while also offering recreational opportunities with its 10-acre surface area.
Despite its low hazard potential, the Pine Dale dam is in poor condition as of the last inspection in May 2018. The dam's spillway, an uncontrolled type with a width of 150 feet, poses a moderate risk of failure. With a history of valve-based outlet gates and a drainage area of zero, the dam requires regular inspection and maintenance to ensure its continued safety and functionality. As climate change impacts water resources, the management and upkeep of dams like Pine Dale become increasingly important for both water security and environmental resilience.
Year_Completed | 1940 |
Dam_Height | 15 |
River_Or_Stream | DRY FORK OF POWDER RIVER |
Dam_Length | 778 |
Primary_Dam_Type | Earth |
Surface_Area | 10 |
Hydraulic_Height | 10 |
Nid_Storage | 122 |
Structural_Height | 15 |
Outlet_Gates | Valve - 1 |
Hazard_Potential | Low |
Foundations | Soil |
Nid_Height | 15 |