Des Lacs Dam 4a (leg B and C) is an earth dam located in Ward County, North Dakota, built in 1935. It carries a Low hazard potential classification.
Dam profile
NID height · 10 ft10 ft tall and 3,951 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 Des Lacs Dam 4a (leg B and C)
The primary purpose of Des Lacs Dam 4a (leg B and C) 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 USFWS (federal). It impounds the Des Lacs River near N.
The dam stands 10 feet tall and stretches 3,951 feet across, creates a reservoir covering 214 acres, has a maximum storage capacity of 1,189 acre-feet, and collects water from a drainage area of 615 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. The most recent inspection on record was 05/22/1991. That was over 35 years ago.
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Location
| State | North Dakota |
| County | Ward |
| Nearest City | N |
| River/Stream | Des Lacs River |
| Coordinates | 48.64955, -102.06326 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 10 ft |
| Dam Height | 10 ft |
| Dam Length | 3,951 ft |
| Year Completed | 1935 (91 years old) |
Storage & Hydraulics
| NID Storage | 1,189 acre-ft |
| Max Storage | 1,189 acre-ft |
| Normal Storage | 740 acre-ft |
| Surface Area | 214 acres |
| Drainage Area | 615 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Fish and Wildlife Pond |
| Owner | USFWS |
| Owner Type | Federal |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 05/22/1991 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | ND00534 |
| Federal ID | ND00534 |
| More Info | State Dam Safety Program |