Sd Noname 12 is an earth dam located in Pennington County, South Dakota, built in 1952. It carries a Low hazard potential classification.
Dam profile
NID height · 17 ft17 ft tall and 290 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 12
The primary purpose of Sd Noname 12 is water supply. The dam stores water for municipal, industrial, or agricultural use, helping ensure a reliable supply for the surrounding area. The dam is owned by S&pl (state). It impounds the Tr-rapid Creek.
The dam stands 17 feet tall and stretches 290 feet across, and has a maximum storage capacity of 102 acre-feet. Completed in 1952, 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. The most recent inspection on record was 05/21/2008. That was over 18 years ago.
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Location
| State | South Dakota |
| County | Pennington |
| Nearest City | None |
| River/Stream | Tr-rapid Creek |
| Coordinates | 43.95993, -102.80736 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 17 ft |
| Dam Height | 17 ft |
| Dam Length | 290 ft |
| Year Completed | 1952 (74 years old) |
Storage & Hydraulics
| NID Storage | 102 acre-ft |
| Max Storage | 102 acre-ft |
| Normal Storage | 62 acre-ft |
| Max Discharge | 442 cfs |
Ownership & Safety
| Purpose | Water Supply |
| Owner | S&pl |
| Owner Type | State |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 05/21/2008 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | SD00994 |
| Federal ID | SD00994 |
| More Info | State Dam Safety Program |