Gregorson No.1
Significant Hazard ConditionEmergency Action Plan: Not Required
Location
| State | South Dakota |
| County | Custer |
| Nearest City | NONE |
| River/Stream | TR-CHEYENNE |
| Coordinates | 43.65333, -103.27166 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 34 ft |
| Dam Height | 34 ft |
| Dam Length | 450 ft |
| Year Completed | 1973 (53 years old) |
Storage & Hydraulics
| NID Storage | 163 acre-ft |
| Max Storage | 163 acre-ft |
| Normal Storage | 93 acre-ft |
| Max Discharge | 2,100 cfs |
Ownership & Safety
| Purpose | Fire Protection, Stock, Or Small Fish Pond |
| Owner | MILDRED CLINE |
| Owner Type | Private |
| Hazard Classification | Significant |
| Emergency Action Plan | Not Required |