SNOFLO



PINE DALE

RESERVOIR LEVELS
Soil Dam Dry Fork Of Powder River
April 15, 2025


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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
       

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