Dayton Hollow Dam
Dayton Hollow Dam is a gravity dam located in Otter Tail County, Minnesota, built in 1909. It carries a Low hazard potential classification and has a satisfactory condition assessment.
About Dayton Hollow Dam
The primary purpose of Dayton Hollow Dam is hydroelectric. The dam generates hydroelectric power by channeling water through turbines, converting the energy of flowing water into electricity. The dam is owned by Otter Tail Power Company (public utility). It impounds the Ottertail River near Breckenridge.
The dam stands 41 feet tall and stretches 265 feet across, creates a reservoir covering 230 acres, has a maximum storage capacity of 5,000 acre-feet, and collects water from a drainage area of 1,810 square miles. Completed in 1909, the structure is over a century 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. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. The most recent inspection on record was 09/22/2022.
At 41 feet, this dam is taller than 88% of dams nationwide.
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Location
| State | Minnesota |
| County | Otter Tail |
| Nearest City | Breckenridge |
| River/Stream | Ottertail River |
| Coordinates | 46.23100, -96.11740 |
Physical Characteristics
| Dam Type | Gravity |
| NID Height | 41 ft |
| Dam Height | 35 ft |
| Dam Length | 265 ft |
| Year Completed | 1909 (117 years old) |
Storage & Hydraulics
| NID Storage | 5,000 acre-ft |
| Max Storage | 5,000 acre-ft |
| Normal Storage | 3,500 acre-ft |
| Surface Area | 230 acres |
| Drainage Area | 1,810 sq mi |
| Max Discharge | 2,000 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Hydroelectric |
| Owner | Otter Tail Power Company |
| Owner Type | Public Utility |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 09/22/2022 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MN00196 |
| Federal ID | MN00196 |
| More Info | State Dam Safety Program |