Johnson Dam; Mervin
Johnson Dam; Mervin is an earth dam located in McKenzie County, North Dakota, built in 1972. It carries a Low hazard potential classification.
About Johnson Dam; Mervin
The primary purpose of Johnson Dam; Mervin is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Mervin Johnson (private). It impounds the Bear Den Creek near N.
The dam stands 28 feet tall and stretches 295 feet across, creates a reservoir covering 3 acres, has a maximum storage capacity of 30 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1972, 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.
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Location
| State | North Dakota |
| County | McKenzie |
| Nearest City | N |
| River/Stream | Bear Den Creek |
| Coordinates | 47.75183, -102.80501 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 28 ft |
| Dam Height | 25 ft |
| Dam Length | 295 ft |
| Year Completed | 1972 (54 years old) |
Storage & Hydraulics
| NID Storage | 30 acre-ft |
| Max Storage | 30 acre-ft |
| Normal Storage | 24 acre-ft |
| Surface Area | 3 acres |
| Drainage Area | 0 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Mervin Johnson |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not Rated |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | ND10020 |
| Federal ID | ND10020 |
| More Info | State Dam Safety Program |