Two Rivers
Two Rivers is a gravity dam located in Kittson County, Minnesota, built in 1938. It carries a Low hazard potential classification and has a fair condition assessment.
About Two Rivers
The primary purpose of Two Rivers is flood risk reduction. The dam is designed to control downstream flooding by temporarily storing excess water during storms and releasing it at a controlled rate. The dam is owned by City Of Hallock (local government). It impounds the Two Rivers South Branch near Hallock.
The dam stands 20 feet tall and stretches 61 feet across, creates a reservoir covering 10 acres, has a maximum storage capacity of 150 acre-feet, and collects water from a drainage area of 510 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 08/10/2022.
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Location
| State | Minnesota |
| County | Kittson |
| Nearest City | Hallock |
| River/Stream | Two Rivers South Branch |
| Coordinates | 48.76909, -96.93166 |
Physical Characteristics
| Dam Type | Gravity |
| NID Height | 20 ft |
| Dam Height | 19 ft |
| Dam Length | 61 ft |
| Year Completed | 1938 (88 years old) |
Storage & Hydraulics
| NID Storage | 150 acre-ft |
| Max Storage | 150 acre-ft |
| Normal Storage | 125 acre-ft |
| Surface Area | 10 acres |
| Drainage Area | 510 sq mi |
| Max Discharge | 1,900 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | City of Hallock |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Fair |
| Last Inspection | 08/10/2022 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MN00018 |
| Federal ID | MN00018 |
| More Info | State Dam Safety Program |