Ehlers Dam is an earth dam located in Lyman County, South Dakota, built in 1992. It carries a Low hazard potential classification.
Dam profile
NID height · 16 ft16 ft tall and 555 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 Ehlers Dam
The primary purpose of Ehlers 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 Laverne Ehlers (private). It impounds the Trib. Cedar Creek.
The dam stands 16 feet tall and stretches 555 feet across, creates a reservoir covering 7 acres, has a maximum storage capacity of 55 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 1992, the structure is 34 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 | Lyman |
| Nearest City | None |
| River/Stream | Trib. Cedar Creek |
| Coordinates | 44.06166, -100.07499 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 16 ft |
| Dam Height | 16 ft |
| Dam Length | 555 ft |
| Year Completed | 1992 (34 years old) |
Storage & Hydraulics
| NID Storage | 55 acre-ft |
| Max Storage | 55 acre-ft |
| Normal Storage | 33 acre-ft |
| Surface Area | 7 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 537 cfs |
Ownership & Safety
| Purpose | Fish and Wildlife Pond |
| Owner | Laverne Ehlers |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | SD02371 |
| Federal ID | SD02371 |
| More Info | State Dam Safety Program |