Thompson Ranch Dam
Thompson Ranch Dam is an earth dam located in Fall River County, South Dakota, built in 2003. It carries a Low hazard potential classification.
About Thompson Ranch Dam
The primary purpose of Thompson Ranch Dam is fish and wildlife pond. The dam creates habitat for fish and wildlife, supporting local ecosystems and potentially serving conservation goals. The dam is owned by Carl & Kari Sanders (private). It impounds the Hay Canyon-tr.
The dam stands 22 feet tall and stretches 420 feet across, creates a reservoir covering 6 acres, has a maximum storage capacity of 78 acre-feet, and collects water from a drainage area of 2 square miles. Completed in 2003, the structure is relatively new.
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 | Fall River |
| Nearest City | None |
| River/Stream | Hay Canyon-tr |
| Coordinates | 43.39566, -103.10419 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 22 ft |
| Dam Height | 22 ft |
| Dam Length | 420 ft |
| Year Completed | 2003 (23 years old) |
Storage & Hydraulics
| NID Storage | 78 acre-ft |
| Max Storage | 78 acre-ft |
| Normal Storage | 37 acre-ft |
| Surface Area | 6 acres |
| Drainage Area | 2 sq mi |
| Max Discharge | 1,080 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Fish and Wildlife Pond |
| Owner | Carl & Kari Sanders |
| Owner Type | Private |
| Hazard Classification | Low |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | SD02556 |
| Federal ID | SD02556 |
| More Info | State Dam Safety Program |