Leichtnam Dam is an earth dam located in Lyman County, South Dakota, built in 2003. It carries a Low hazard potential classification.
Dam profile
NID height · 16 ft16 ft tall and 595 ft long. 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 Leichtnam Dam
The primary purpose of Leichtnam 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 Lynn Leichtnam (private). It impounds the Tr. Medicine Creek.
The dam stands 16 feet tall and stretches 595 feet across, creates a reservoir covering 9 acres, and has a maximum storage capacity of 84 acre-feet. 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. The most recent inspection on record was 10/19/2005. That was over 20 years ago.
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Location
| State | South Dakota |
| County | Lyman |
| River/Stream | Tr. Medicine Creek |
| Coordinates | 43.92188, -100.08076 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 16 ft |
| Dam Height | 16 ft |
| Dam Length | 595 ft |
| Year Completed | 2003 (23 years old) |
Storage & Hydraulics
| NID Storage | 84 acre-ft |
| Max Storage | 84 acre-ft |
| Normal Storage | 38 acre-ft |
| Surface Area | 9 acres |
| Max Discharge | 405 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Fish and Wildlife Pond |
| Owner | Lynn Leichtnam |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 10/19/2005 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | SD02536 |
| Federal ID | SD02536 |
| More Info | State Dam Safety Program |