Diamond Lake
Diamond Lake is a gravity dam located in Kandiyohi County, Minnesota, built in 1932. It carries a Low hazard potential classification and has a poor condition assessment.
About Diamond Lake
The primary purpose of Diamond Lake is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by County Of Kandiyohi (local government). It impounds the County Ditch 28 near Crow River.
The dam stands 7 feet tall and stretches 41 feet across, creates a reservoir covering 1,660 acres, has a maximum storage capacity of 44,908 acre-feet, and collects water from a drainage area of 28 square miles. Completed in 1932, 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 06/07/2023.
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Location
| State | Minnesota |
| County | Kandiyohi |
| Nearest City | Crow River |
| River/Stream | County Ditch 28 |
| Coordinates | 45.19025, -94.82728 |
Physical Characteristics
| Dam Type | Gravity |
| NID Height | 7 ft |
| Dam Height | 7 ft |
| Dam Length | 41 ft |
| Year Completed | 1932 (94 years old) |
Storage & Hydraulics
| NID Storage | 44,908 acre-ft |
| Max Storage | 44,908 acre-ft |
| Normal Storage | 38,320 acre-ft |
| Surface Area | 1,660 acres |
| Drainage Area | 28 sq mi |
| Max Discharge | 185 cfs |
Ownership & Safety
| Purpose | Recreation |
| Owner | County of Kandiyohi |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Poor |
| Last Inspection | 06/07/2023 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MN00069 |
| Federal ID | MN00069 |
| More Info | State Dam Safety Program |