M. Scism No.1
M. Scism No.1 is an earth dam located in Custer County, South Dakota, built in 1973. It carries a Low hazard potential classification.
About M. Scism No.1
The primary purpose of M. Scism No.1 is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Randall Davis (private). It impounds the Tr-cheyenne.
The dam stands 28 feet tall and stretches 314 feet across, and has a maximum storage capacity of 160 acre-feet. Completed in 1973, the structure is well into its service life at over 50 years old.
This dam has a low hazard potential classification, meaning that failure would cause minimal damage, limited primarily to the dam owner's property, with no expected loss of life.
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Location
| State | South Dakota |
| County | Custer |
| Nearest City | None |
| River/Stream | Tr-cheyenne |
| Coordinates | 43.80499, -102.84832 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 28 ft |
| Dam Height | 28 ft |
| Dam Length | 314 ft |
| Year Completed | 1973 (53 years old) |
Storage & Hydraulics
| NID Storage | 160 acre-ft |
| Max Storage | 160 acre-ft |
| Normal Storage | 88 acre-ft |
| Max Discharge | 1,225 cfs |
Ownership & Safety
| Purpose | Irrigation |
| Owner | RANDALL DAVIS |
| Owner Type | Private |
| Hazard Classification | Low |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | SD01041 |
| Federal ID | SD01041 |
| More Info | State Dam Safety Program |