Sd Noname 117 is an earth dam located in Pennington County, South Dakota, built in 1954. It carries a Low hazard potential classification.
Dam profile
NID height · 15 ft15 ft tall and 420 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 117
The primary purpose of Sd Noname 117 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 Mark Trask (private). It impounds the Tr-cheyenne.
The dam stands 15 feet tall and stretches 420 feet across, and has a maximum storage capacity of 120 acre-feet. Completed in 1954, 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 | Pennington |
| Nearest City | None |
| River/Stream | Tr-cheyenne |
| Coordinates | 44.13666, -102.39999 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 15 ft |
| Dam Height | 15 ft |
| Dam Length | 420 ft |
| Year Completed | 1954 (72 years old) |
Storage & Hydraulics
| NID Storage | 120 acre-ft |
| Max Storage | 120 acre-ft |
| Normal Storage | 104 acre-ft |
| Max Discharge | 1,250 cfs |
Ownership & Safety
| Purpose | Fire Protection, Stock, Or Small Fish Pond |
| Owner | Mark Trask |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | SD00992 |
| Federal ID | SD00992 |
| More Info | State Dam Safety Program |