SNOFLO
 


CHAPMAN

RESERVOIR LEVELS
Soil Dam Willow Dell
May 4, 2025


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Chapman is a privately owned earth dam located in Carbon County, Wyoming, specifically in the city of Bolten Ranch. It is situated along the Willow Dell river or stream, with a primary purpose of serving as a fish and wildlife pond. The dam has a height of 26 feet and a hydraulic height of 21 feet, with a total length of 1400 feet and a storage capacity of 102 acre-feet.

Despite its low hazard potential, Chapman is currently in poor condition, as indicated by a condition assessment conducted in October 2017. The dam has a moderate risk level (3) and is subject to regular inspections every 5 years. It features an uncontrolled spillway type with a width of 40 feet and an outlet gate valve. The dam's normal storage capacity is 64 acre-feet, with a surface area of 8.48 acres and a drainage area of 0.88 square miles.

Enthusiasts of water resources and climate in the region may find Chapman to be an interesting case study in dam management and maintenance. With its location in a scenic area of Wyoming and its purpose of supporting fish and wildlife, the dam serves as a vital resource for the local ecosystem. However, the dam's poor condition and moderate risk level highlight the importance of ongoing monitoring and maintenance to ensure the safety and functionality of this critical water infrastructure.

Dam_Height 26
River_Or_Stream WILLOW DELL
Dam_Length 1400
Primary_Dam_Type Earth
Surface_Area 8.48
Hydraulic_Height 21
Drainage_Area 0.88
Nid_Storage 102
Structural_Height 23
Outlet_Gates Valve - 1
Hazard_Potential Low
Foundations Soil
Nid_Height 26
       

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