Sd Noname 105 is an earth dam located in Pennington County, South Dakota, built in 1940. It carries a Low hazard potential classification.
Dam profile
NID height · 21 ft21 ft tall and 440 ft long. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic embankment section and the water level is illustrative.
About Sd Noname 105
The primary purpose of Sd Noname 105 is fire protection, stock, or small fish pond. The dam maintains a small impoundment used for fire suppression, livestock watering, or as a fish pond. The dam is owned by Walter J. Witcher (private). It impounds the Tr-cheyenneriver.
The dam stands 21 feet tall and stretches 440 feet across, and has a maximum storage capacity of 126 acre-feet. Completed in 1940, the structure is well-established, with more than 75 years of service.
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 | Pennington |
| Nearest City | None |
| River/Stream | Tr-cheyenneriver |
| Coordinates | 43.96166, -102.53666 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 21 ft |
| Dam Height | 21 ft |
| Dam Length | 440 ft |
| Year Completed | 1940 (86 years old) |
Storage & Hydraulics
| NID Storage | 126 acre-ft |
| Max Storage | 126 acre-ft |
| Normal Storage | 68 acre-ft |
| Max Discharge | 1,242 cfs |
Ownership & Safety
| Purpose | Fire Protection, Stock, Or Small Fish Pond |
| Owner | Walter J. Witcher |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | SD00988 |
| Federal ID | SD00988 |
| More Info | State Dam Safety Program |