Nelson Dam
Nelson Dam is an earth dam located in Harding County, South Dakota, built in 1956. It carries a Low hazard potential classification.
About Nelson Dam
The primary purpose of Nelson 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 Larry Nelson (private). It impounds the Tr Moreau River.
The dam stands 23 feet tall and stretches 1,050 feet across, creates a reservoir covering 46 acres, has a maximum storage capacity of 350 acre-feet, and collects water from a drainage area of 2 square miles. Completed in 1956, 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 08/31/1999. That was over 26 years ago.
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Location
| State | South Dakota |
| County | Harding |
| Nearest City | None |
| River/Stream | Tr Moreau River |
| Coordinates | 45.25719, -103.80624 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 23 ft |
| Dam Height | 23 ft |
| Dam Length | 1,050 ft |
| Year Completed | 1956 (70 years old) |
Storage & Hydraulics
| NID Storage | 350 acre-ft |
| Max Storage | 350 acre-ft |
| Normal Storage | 276 acre-ft |
| Surface Area | 46 acres |
| Drainage Area | 2 sq mi |
| Max Discharge | 2,240 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Fire Protection, Stock, Or Small Fish Pond |
| Owner | LARRY NELSON |
| Owner Type | Private |
| Hazard Classification | Low |
| Last Inspection | 08/31/1999 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | SD01959 |
| Federal ID | SD01959 |
| More Info | State Dam Safety Program |