Earl Hanrahan
Low Hazard ConditionEmergency Action Plan: Not Required
Location
| State | South Dakota |
| County | Haakon |
| Nearest City | NONE |
| River/Stream | West Fork Spotted Bear Creek |
| Coordinates | 44.45852, -101.79059 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 12 ft |
| Dam Height | 12 ft |
| Dam Length | 200 ft |
| Year Completed | 1949 (77 years old) |
Storage & Hydraulics
| NID Storage | 67 acre-ft |
| Max Storage | 67 acre-ft |
| Normal Storage | 24 acre-ft |
| Max Discharge | 300 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Fire Protection, Stock, Or Small Fish Pond |
| Owner | HANRAHAN FAMILY LLLP |
| Owner Type | Private |
| Hazard Classification | Low |
| Emergency Action Plan | Not Required |