Dewberry Dam
Dewberry Dam is an earth dam located in Dewey County, South Dakota, built in 1937. It carries a Low hazard potential classification.
About Dewberry Dam
The primary purpose of Dewberry Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by S&pl (state). It impounds the Dog Butte Creek.
The dam stands 22 feet tall and stretches 390 feet across, creates a reservoir covering 25 acres, and has a maximum storage capacity of 264 acre-feet. Completed in 1937, 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 11/02/2018.
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Location
| State | South Dakota |
| County | Dewey |
| Nearest City | None |
| River/Stream | Dog Butte Creek |
| Coordinates | 45.39139, -100.97775 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 22 ft |
| Dam Height | 22 ft |
| Dam Length | 390 ft |
| Year Completed | 1937 (89 years old) |
Storage & Hydraulics
| NID Storage | 264 acre-ft |
| Max Storage | 264 acre-ft |
| Normal Storage | 176 acre-ft |
| Surface Area | 25 acres |
| Max Discharge | 2,000 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | S&PL |
| Owner Type | State |
| Hazard Classification | Low |
| Last Inspection | 11/02/2018 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | SD02426 |
| Federal ID | SD02426 |
| More Info | State Dam Safety Program |