Herman #15 is an earth dam located in Jones County, South Dakota, built in 1958. It carries a Low hazard potential classification.
Dam profile
NID height · 41 ft41 ft tall and 469 ft long, taller than 87% of U.S. dams with a recorded height. 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 Herman #15
The primary purpose of Herman #15 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 Herman Ranch Inc. (private). It impounds the Tr-bad River near Fort Pierre.
The dam stands 41 feet tall and stretches 469 feet across, and has a maximum storage capacity of 82 acre-feet. Completed in 1958, 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.
At 41 feet, this dam is taller than 87% of dams nationwide.
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Location
| State | South Dakota |
| County | Jones |
| Nearest City | Fort Pierre |
| River/Stream | Tr-bad River |
| Coordinates | 44.09499, -100.60832 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 41 ft |
| Dam Height | 41 ft |
| Dam Length | 469 ft |
| Year Completed | 1958 (68 years old) |
Storage & Hydraulics
| NID Storage | 82 acre-ft |
| Max Storage | 82 acre-ft |
| Normal Storage | 61 acre-ft |
| Max Discharge | 2,100 cfs |
Ownership & Safety
| Purpose | Fire Protection, Stock, Or Small Fish Pond |
| Owner | Herman Ranch Inc. |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | SD00047 |
| Federal ID | SD00047 |
| More Info | State Dam Safety Program |