Rock Dam 2
Rock Dam 2 is an earth dam located in McHenry County, North Dakota, built in 1936. It carries a Low hazard potential classification and has a fair condition assessment.
About Rock Dam 2
The primary purpose of Rock Dam 2 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 Tributary Of Souris River.
The dam stands 8 feet tall and stretches 10,682 feet across, creates a reservoir covering 462 acres, has a maximum storage capacity of 1,532 acre-feet, and collects water from a drainage area of 3 square miles. 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. Its condition is rated fair — the dam has minor deficiencies that are being addressed or do not pose an immediate safety threat. The most recent inspection on record was 09/30/2020.
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Location
| State | North Dakota |
| County | McHenry |
| River/Stream | Tributary Of Souris River |
| Coordinates | 48.58870, -100.58550 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 8 ft |
| Dam Height | 8 ft |
| Dam Length | 10,682 ft |
| Year Completed | 1936 (90 years old) |
Storage & Hydraulics
| NID Storage | 1,532 acre-ft |
| Max Storage | 1,532 acre-ft |
| Normal Storage | 1,257 acre-ft |
| Surface Area | 462 acres |
| Drainage Area | 3 sq mi |
| Max Discharge | 1,114 cfs |
Ownership & Safety
| Purpose | Fish and Wildlife Pond |
| Owner | US FISH AND WILDLIFE SERVICE |
| Owner Type | Federal |
| Hazard Classification | Low |
| Condition Assessment | Fair |
| Last Inspection | 09/30/2020 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | ND00811 |
| Federal ID | ND00811 |
| More Info | State Dam Safety Program |