Logan Dam
Logan Dam is an earth dam located in Clark County, South Dakota, built in 1936. It carries a Low hazard potential classification.
About Logan Dam
The primary purpose of Logan Dam is fire protection, stock, or small fish pond. The dam maintains a small impoundment used for fire suppression, livestock watering, or as a fish pond. The dam is owned by S&pl (state). It impounds the Trib. Foster Creek.
The dam stands 18 feet tall and stretches 400 feet across, and has a maximum storage capacity of 860 acre-feet. Completed in 1936, the structure is well-established, with more than 75 years of service.
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 10/17/2022.
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Location
| State | South Dakota |
| County | Clark |
| Nearest City | None |
| River/Stream | Trib. Foster Creek |
| Coordinates | 44.83546, -97.95045 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 18 ft |
| Dam Height | 18 ft |
| Dam Length | 400 ft |
| Year Completed | 1936 (90 years old) |
Storage & Hydraulics
| NID Storage | 860 acre-ft |
| Max Storage | 860 acre-ft |
| Normal Storage | 180 acre-ft |
| Max Discharge | 1,600 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Fire Protection, Stock, Or Small Fish Pond |
| Owner | S&PL |
| Owner Type | State |
| Hazard Classification | Low |
| Last Inspection | 10/17/2022 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | SD02368 |
| Federal ID | SD02368 |
| More Info | State Dam Safety Program |