New Wall Lake, located in Pennington County, South Dakota, is a state-regulated dam with a height of 40 feet and a length of 570 feet.
Wind
Humidity
Built in 1947, this earth dam serves the primary purpose of water resource management and flood control along the TR-Cheyenne river. With a maximum storage capacity of 460 acre-feet and a normal storage level of 280 acre-feet, the dam plays a crucial role in maintaining water supply and managing peak discharge levels in the area.
Despite being classified as low hazard potential, New Wall Lake dam undergoes regular inspections and maintenance by the South Dakota Department of Agriculture and Natural Resources. The last inspection in September 2017 deemed its condition as "not rated", indicating a need for further assessment. The dam's Emergency Action Plan (EAP) status and risk management measures are currently unspecified, highlighting the need for ongoing monitoring and preparedness in the face of potential emergencies.
Water resource and climate enthusiasts will appreciate the significance of New Wall Lake in the local ecosystem and its role in water management within the St. Paul District. With its strategic location and operational history dating back over seven decades, this dam stands as a testament to the importance of infrastructure in mitigating natural disasters and ensuring sustainable water resource practices in South Dakota.
Year Completed |
1947 |
Dam Length |
570 |
Dam Height |
40 |
River Or Stream |
TR-CHEYENNE |
Primary Dam Type |
Earth |
Hydraulic Height |
40 |
Nid Storage |
460 |
Hazard Potential |
Low |
Nid Height |
40 |
| Location | Reservations | Toilets |
|---|---|---|
Buffalo gap national grassland
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Sage Creek
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Sage Creek Campground
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