Iverson Dam; Marvin is an earth dam located in Williams County, North Dakota, built in 1964. It carries a Significant hazard potential classification.
Dam profile
NID height · 35 ft35 ft tall and 1,000 ft long, taller than 80% of U.S. dams with a recorded height. 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 Iverson Dam; Marvin
The primary purpose of Iverson Dam; Marvin is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Deon and Shana Iverson (private). It impounds the Dry Fork Dam near N.
The dam stands 35 feet tall and stretches 1,000 feet across, creates a reservoir covering 10 acres, has a maximum storage capacity of 169 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 1964, the structure is well into its service life at over 50 years old.
This dam has a significant hazard potential classification, meaning that a failure could cause significant economic damage — flooding roads, bridges, or property downstream — but is not expected to result in loss of life. The most recent inspection on record was 11/06/2020.
At 35 feet, this dam is taller than 80% of dams nationwide.
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Location
| State | North Dakota |
| County | Williams |
| Nearest City | N |
| River/Stream | Dry Fork Dam |
| Coordinates | 48.22799, -102.94695 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 35 ft |
| Dam Height | 35 ft |
| Dam Length | 1,000 ft |
| Year Completed | 1964 (62 years old) |
Storage & Hydraulics
| NID Storage | 169 acre-ft |
| Max Storage | 169 acre-ft |
| Normal Storage | 79 acre-ft |
| Surface Area | 10 acres |
| Drainage Area | 1 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Deon and Shana Iverson |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Not assessed |
| Last Inspection | 11/06/2020 |
| Emergency Action Plan | No |
Identifiers
| NID ID | ND00424 |
| Federal ID | ND00424 |
| More Info | State Dam Safety Program |