Deerfield is a Federal-owned structure located in Rapid City, South Dakota, along Castle Creek.
Wind
Humidity
Completed in 1946, this Earth-type dam stands at a height of 171 feet and has a storage capacity of 42,310 acre-feet. Its primary purpose is for Fish and Wildlife Pond, with additional functions including irrigation and water supply. The dam has a high hazard potential and a moderate risk assessment rating.
Managed by the Bureau of Reclamation, Deerfield plays a crucial role in regulating water resources in the region. With a maximum discharge capacity of 103,400 cubic feet per second and a surface area of 423 acres, the dam serves as a key infrastructure for both flood control and water storage. Despite its age, Deerfield has undergone modifications in 1984 to enhance its hydraulic and structural capabilities, ensuring its continued effectiveness in water management.
While Deerfield has not been assessed for its current condition, its last inspection was conducted in August 2020. The dam is operated and inspected by the Bureau of Reclamation, with oversight from the Forest Service. As a vital component of the water supply infrastructure in Pennington, South Dakota, Deerfield remains a critical asset for maintaining the ecological balance of the area and supporting various water-related activities.
Years Modified |
1984 - Hydraulic, 1984 - Structural |
Year Completed |
1946 |
Dam Length |
1125 |
Dam Height |
171 |
River Or Stream |
CASTLE CREEK |
Primary Dam Type |
Earth |
Surface Area |
423 |
Hydraulic Height |
145 |
Drainage Area |
90 |
Nid Storage |
42310 |
Structural Height |
171 |
Hazard Potential |
High |
Nid Height |
171 |
| Location | Reservations | Toilets |
|---|---|---|
Dutchman - USFS
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Dutchman
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Deerfield
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Custer Trail
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Custer Trail - USFS
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Castle Peak
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