Triple Seven No.1 is a privately owned earth dam located in Custer, South Dakota, along the TR-CHEYENNE river.
Wind
Humidity
Built in 1947, this dam stands at a height of 18 feet and has a storage capacity of 115 acre-feet, with a normal storage level of 67 acre-feet. The dam has a low hazard potential and its condition assessment is currently listed as "Not Rated".
Managed by the South Dakota Department of Environment and Natural Resources (DENR), Triple Seven No.1 is regulated, permitted, inspected, and enforced by the state. Despite its age, the dam has not been modified over the years and has not undergone a recent inspection. With a maximum discharge capacity of 2835 cubic feet per second, the dam does not have an emergency action plan (EAP) in place at this time.
Triple Seven No.1 serves as an important structure for water resource management in the area, providing storage for irrigation and other purposes. With its historical significance and continued functionality, this dam is a key piece of infrastructure in the region for both water resource and climate enthusiasts to appreciate and monitor.
Year Completed |
1947 |
Dam Length |
900 |
Dam Height |
18 |
River Or Stream |
TR-CHEYENNE |
Primary Dam Type |
Earth |
Hydraulic Height |
18 |
Nid Storage |
115 |
Hazard Potential |
Low |
Nid Height |
18 |
| Location | Reservations | Toilets |
|---|---|---|
French Creek Camping Area
|
||
French Creek Campground
|
||
French Creek
|