Big Pine Lake is a gravity dam located in Otter Tail County, Minnesota, built in 1937. It carries a Low hazard potential classification and has a satisfactory condition assessment.
Dam profile
NID height · 10 ft10 ft tall and 235 ft long. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic concrete gravity section and the water level is illustrative.
About Big Pine Lake
The primary purpose of Big Pine Lake is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Mndnr (state). It impounds the Otter Tail River near Otter Tail.
The dam stands 10 feet tall and stretches 235 feet across, creates a reservoir covering 4,644 acres, has a maximum storage capacity of 91,580 acre-feet, and collects water from a drainage area of 560 square miles. Completed in 1937, 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 satisfactory, indicating no existing or potential dam safety deficiencies are recognized. The most recent inspection on record was 08/31/2017.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | Minnesota |
| County | Otter Tail |
| Nearest City | Otter Tail |
| River/Stream | Otter Tail River |
| Coordinates | 46.59183, -95.50391 |
Physical Characteristics
| Dam Type | Gravity |
| NID Height | 10 ft |
| Dam Height | 7 ft |
| Dam Length | 235 ft |
| Year Completed | 1937 (89 years old) |
Storage & Hydraulics
| NID Storage | 91,580 acre-ft |
| Max Storage | 91,580 acre-ft |
| Normal Storage | 77,120 acre-ft |
| Surface Area | 4,644 acres |
| Drainage Area | 560 sq mi |
| Max Discharge | 3,420 cfs |
Ownership & Safety
| Purpose | Recreation |
| Owner | Mndnr |
| Owner Type | State |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 08/31/2017 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MN00212 |
| Federal ID | MN00212 |
| More Info | State Dam Safety Program |