Sonnenschein Number 1 is an earth dam located in Stanley County, South Dakota, built in 1963. It carries a Low hazard potential classification.
Dam profile
NID height · 26 ft26 ft tall and 1,042 ft long, taller than 55% 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 Sonnenschein Number 1
The primary purpose of Sonnenschein Number 1 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 E. Sonnenschein (private). It impounds the Willow Creek Tributary near Fort Pierre.
The dam stands 26 feet tall and stretches 1,042 feet across, and has a maximum storage capacity of 150 acre-feet. Completed in 1963, 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 | Stanley |
| Nearest City | Fort Pierre |
| River/Stream | Willow Creek Tributary |
| Coordinates | 44.45666, -100.64166 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 26 ft |
| Dam Height | 26 ft |
| Dam Length | 1,042 ft |
| Year Completed | 1963 (63 years old) |
Storage & Hydraulics
| NID Storage | 150 acre-ft |
| Max Storage | 150 acre-ft |
| Normal Storage | 63 acre-ft |
| Max Discharge | 1,820 cfs |
Ownership & Safety
| Purpose | Fire Protection, Stock, Or Small Fish Pond |
| Owner | E. Sonnenschein |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | SD00256 |
| Federal ID | SD00256 |
| More Info | State Dam Safety Program |