Lewandowski Dam is an earth dam located in Roberts County, South Dakota, built in 2006. It carries a Low hazard potential classification.
Dam profile
NID height · 29 ft29 ft tall and 160 ft long, taller than 65% 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 Lewandowski Dam
The primary purpose of Lewandowski 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 Daryl Lewandowski (private). It impounds the Tr.-little Minnesota River.
The dam stands 29 feet tall and stretches 160 feet across, creates a reservoir covering 1 acres, and has a maximum storage capacity of 33 acre-feet. Completed in 2006, 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 | Roberts |
| River/Stream | Tr.-little Minnesota River |
| Coordinates | 45.61022, -96.88753 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 29 ft |
| Dam Height | 29 ft |
| Dam Length | 160 ft |
| Year Completed | 2006 (20 years old) |
Storage & Hydraulics
| NID Storage | 33 acre-ft |
| Max Storage | 33 acre-ft |
| Normal Storage | 14 acre-ft |
| Surface Area | 1 acres |
| Max Discharge | 325 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Fish and Wildlife Pond |
| Owner | Daryl Lewandowski |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | SD02545 |
| Federal ID | SD02545 |
| More Info | State Dam Safety Program |