Rock Lake Dam
Rock Lake Dam is an earth dam located in Towner County, North Dakota, built in 1935. It carries a Low hazard potential classification and has a poor condition assessment.
About Rock Lake Dam
The primary purpose of Rock Lake Dam is fish and wildlife pond. The dam creates habitat for fish and wildlife, supporting local ecosystems and potentially serving conservation goals. The dam is owned by Us Fish And Wildlife Service (federal). It impounds the Pembina River.
The dam stands 8 feet tall and stretches 753 feet across, creates a reservoir covering 796 acres, has a maximum storage capacity of 7,600 acre-feet, and collects water from a drainage area of 105 square miles. Completed in 1935, 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. Its condition is rated poor, meaning the dam has recognized safety deficiencies that require remediation to address risks. The most recent inspection on record was 08/24/2015. That was over 10 years ago.
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Location
| State | North Dakota |
| County | Towner |
| River/Stream | Pembina River |
| Coordinates | 48.82639, -99.20472 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 8 ft |
| Dam Height | 8 ft |
| Dam Length | 753 ft |
| Year Completed | 1935 (91 years old) |
Storage & Hydraulics
| NID Storage | 7,600 acre-ft |
| Max Storage | 7,600 acre-ft |
| Normal Storage | 2,829 acre-ft |
| Surface Area | 796 acres |
| Drainage Area | 105 sq mi |
| Max Discharge | 3,989 cfs |
Ownership & Safety
| Purpose | Fish and Wildlife Pond |
| Owner | US FISH AND WILDLIFE SERVICE |
| Owner Type | Federal |
| Hazard Classification | Low |
| Condition Assessment | Poor |
| Last Inspection | 08/24/2015 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | ND00344 |
| Federal ID | ND00344 |
| More Info | State Dam Safety Program |