Coleharbor Water Supply Dam is an earth dam located in McLean County, North Dakota, built in 1965. It carries a Low hazard potential classification.
Dam profile
NID height · 13 ft13 ft tall and 700 ft long. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic embankment section and the water level is illustrative.
About Coleharbor Water Supply Dam
The primary purpose of Coleharbor Water Supply Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by City of Coleharbor (local government). It impounds the Wolf Creek near N.
The dam stands 13 feet tall and stretches 700 feet across, creates a reservoir covering 22 acres, has a maximum storage capacity of 134 acre-feet, and collects water from a drainage area of 4 square miles. Completed in 1965, the structure is well into its service life at over 50 years 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. The most recent inspection on record was 05/09/2018.
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Location
| State | North Dakota |
| County | McLean |
| Nearest City | N |
| River/Stream | Wolf Creek |
| Coordinates | 47.54006, -101.23571 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 13 ft |
| Dam Height | 13 ft |
| Dam Length | 700 ft |
| Year Completed | 1965 (61 years old) |
Storage & Hydraulics
| NID Storage | 134 acre-ft |
| Max Storage | 134 acre-ft |
| Normal Storage | 66 acre-ft |
| Surface Area | 22 acres |
| Drainage Area | 4 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | City of Coleharbor |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 05/09/2018 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | ND00367 |
| Federal ID | ND00367 |
| More Info | State Dam Safety Program |