Larson Dam is an earth dam located in Tripp County, South Dakota, built in 1977. It carries a Low hazard potential classification.
Dam profile
NID height · 30 ft30 ft tall and 400 ft long, taller than 68% 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 Larson Dam
The primary purpose of Larson Dam 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 Darrell & Glenn Larson (private). It impounds the Trib. Thunder Creek.
The dam stands 30 feet tall and stretches 400 feet across, and has a maximum storage capacity of 400 acre-feet. Completed in 1977, the structure is 49 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 07/29/1991. That was over 35 years ago.
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Location
| State | South Dakota |
| County | Tripp |
| Nearest City | None |
| River/Stream | Trib. Thunder Creek |
| Coordinates | 43.68166, -99.62832 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 30 ft |
| Dam Height | 30 ft |
| Dam Length | 400 ft |
| Year Completed | 1977 (49 years old) |
Storage & Hydraulics
| NID Storage | 400 acre-ft |
| Max Storage | 400 acre-ft |
| Normal Storage | 365 acre-ft |
| Max Discharge | 700 cfs |
Ownership & Safety
| Purpose | Fire Protection, Stock, Or Small Fish Pond |
| Owner | Darrell & Glenn Larson |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 07/29/1991 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | SD02244 |
| Federal ID | SD02244 |
| More Info | State Dam Safety Program |