Horihan-hazel Group
Horihan-hazel Group is an earth dam located in Fillmore County, Minnesota, built in 1978. It carries a Significant hazard potential classification and has a satisfactory condition assessment.
About Horihan-hazel Group
The primary purpose of Horihan-hazel Group 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 Horihan-hazel Group (private). It impounds the Root River-tr near Whalan.
The dam stands 32 feet tall and stretches 200 feet across, has a maximum storage capacity of 26 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1978, the structure is 48 years old.
This dam has a significant hazard potential classification, meaning that a failure could cause significant economic damage — flooding roads, bridges, or property downstream — but is not expected to result in 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 05/24/2022.
At 32 feet, this dam is taller than 76% of dams nationwide.
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Location
| State | Minnesota |
| County | Fillmore |
| Nearest City | Whalan |
| River/Stream | Root River-tr |
| Coordinates | 43.74565, -91.98883 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 32 ft |
| Dam Height | 29 ft |
| Dam Length | 200 ft |
| Year Completed | 1978 (48 years old) |
Storage & Hydraulics
| NID Storage | 26 acre-ft |
| Max Storage | 26 acre-ft |
| Normal Storage | 5 acre-ft |
| Drainage Area | 0 sq mi |
| Max Discharge | 703 cfs |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | Horihan-Hazel Group |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Satisfactory |
| Last Inspection | 05/24/2022 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MN00862 |
| Federal ID | MN00862 |
| More Info | State Dam Safety Program |