Appert Lake Dam is an earth dam located in Emmons County, North Dakota, built in 1930. It carries a Low hazard potential classification and has a poor condition assessment.
Dam profile
NID height · 10 ft10 ft tall and 520 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 Appert Lake Dam
The primary purpose of Appert Lake Dam 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 W Branch, Long Lake Creek-tr.
The dam stands 10 feet tall and stretches 520 feet across, creates a reservoir covering 76 acres, has a maximum storage capacity of 978 acre-feet, and collects water from a drainage area of 11 square miles. Completed in 1930, 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 poor, meaning the dam has recognized safety deficiencies that require remediation to address risks. The most recent inspection on record was 09/12/2016. That was over 10 years ago.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | North Dakota |
| County | Emmons |
| River/Stream | W Branch, Long Lake Creek-tr |
| Coordinates | 46.46000, -100.22833 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 10 ft |
| Dam Height | 10 ft |
| Dam Length | 520 ft |
| Year Completed | 1930 (96 years old) |
Storage & Hydraulics
| NID Storage | 978 acre-ft |
| Max Storage | 978 acre-ft |
| Normal Storage | 182 acre-ft |
| Surface Area | 76 acres |
| Drainage Area | 11 sq mi |
| Max Discharge | 800 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Fish and Wildlife Pond |
| Owner | US Fish and Wildlife Service |
| Owner Type | Federal |
| Hazard Classification | Low |
| Condition Assessment | Poor |
| Last Inspection | 09/12/2016 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | ND00339 |
| Federal ID | ND00339 |
| More Info | State Dam Safety Program |