Lake Herman Mip #3
Lake Herman Mip #3 is an earth dam located in Lake County, South Dakota, built in 1981. It carries a Low hazard potential classification.
About Lake Herman Mip #3
The primary purpose of Lake Herman Mip #3 is flood risk reduction. The dam is designed to control downstream flooding by temporarily storing excess water during storms and releasing it at a controlled rate. The dam is owned by Lake Co. Consv. Dist. (local government). It impounds the Tr-lake Herman.
The dam stands 29 feet tall and stretches 1,343 feet across, creates a reservoir covering 5 acres, has a maximum storage capacity of 1,435 acre-feet, and collects water from a drainage area of 10 square miles. Completed in 1981, the structure is 45 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 | Lake |
| Nearest City | None |
| River/Stream | Tr-lake Herman |
| Coordinates | 43.96556, -97.16597 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 29 ft |
| Dam Height | 29 ft |
| Dam Length | 1,343 ft |
| Year Completed | 1981 (45 years old) |
Storage & Hydraulics
| NID Storage | 1,435 acre-ft |
| Max Storage | 1,435 acre-ft |
| Normal Storage | 660 acre-ft |
| Surface Area | 5 acres |
| Drainage Area | 10 sq mi |
| Max Discharge | 4,315 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | LAKE CO. CONSV. DIST. |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | SD02183 |
| Federal ID | SD02183 |
| More Info | State Dam Safety Program |