Green Lake
Green Lake is a gravity dam located in Kandiyohi County, Minnesota, built in 1938. It carries a Low hazard potential classification and has a fair condition assessment.
About Green Lake
The primary purpose of Green Lake is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Mndnr-wildlife (state). It impounds the Crow River Middle Fork near Crow River.
The dam stands 9 feet tall and stretches 62 feet across, creates a reservoir covering 5,560 acres, has a maximum storage capacity of 11,700 acre-feet, and collects water from a drainage area of 149 square miles. Completed in 1938, 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 fair — the dam has minor deficiencies that are being addressed or do not pose an immediate safety threat. The most recent inspection on record was 04/18/2023.
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Location
| State | Minnesota |
| County | Kandiyohi |
| Nearest City | Crow River |
| River/Stream | Crow River Middle Fork |
| Coordinates | 45.26727, -94.86658 |
Physical Characteristics
| Dam Type | Gravity |
| NID Height | 9 ft |
| Dam Height | 7 ft |
| Dam Length | 62 ft |
| Year Completed | 1938 (88 years old) |
Storage & Hydraulics
| NID Storage | 11,700 acre-ft |
| Max Storage | 11,700 acre-ft |
| Normal Storage | 11,000 acre-ft |
| Surface Area | 5,560 acres |
| Drainage Area | 149 sq mi |
| Max Discharge | 1,115 cfs |
Ownership & Safety
| Purpose | Recreation |
| Owner | MNDNR-Wildlife |
| Owner Type | State |
| Hazard Classification | Low |
| Condition Assessment | Fair |
| Last Inspection | 04/18/2023 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MN00370 |
| Federal ID | MN00370 |
| More Info | State Dam Safety Program |