Dorman Dam
Dorman Dam is an earth dam located in Lyman County, South Dakota, built in 1939. It carries a Low hazard potential classification.
About Dorman Dam
The primary purpose of Dorman Dam is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by J. Quillin Bros. (private). It impounds the Trib Medicine Creek.
The dam stands 18 feet tall and stretches 80 feet across, and has a maximum storage capacity of 384 acre-feet. Completed in 1939, 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.
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Location
| State | South Dakota |
| County | Lyman |
| Nearest City | None |
| River/Stream | Trib Medicine Creek |
| Coordinates | 43.97166, -99.86832 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 18 ft |
| Dam Height | 18 ft |
| Dam Length | 80 ft |
| Year Completed | 1939 (87 years old) |
Storage & Hydraulics
| NID Storage | 384 acre-ft |
| Max Storage | 384 acre-ft |
| Normal Storage | 150 acre-ft |
| Max Discharge | 606 cfs |
Ownership & Safety
| Purpose | Irrigation |
| Owner | J. QUILLIN BROS. |
| Owner Type | Private |
| Hazard Classification | Low |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | SD00327 |
| Federal ID | SD00327 |
| More Info | State Dam Safety Program |