Sully Dam
Low Hazard ConditionEmergency Action Plan: Not Required
Location
| State | South Dakota |
| County | Sully |
| Nearest City | NONE |
| River/Stream | OKOBOJO |
| Coordinates | 44.70831, -100.19559 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 22 ft |
| Dam Height | 22 ft |
| Dam Length | 1,470 ft |
| Year Completed | 1938 (88 years old) |
Storage & Hydraulics
| NID Storage | 2,640 acre-ft |
| Max Storage | 2,640 acre-ft |
| Normal Storage | 1,160 acre-ft |
| Max Discharge | 9,040 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Water Supply |
| Owner | GF&P |
| Owner Type | State |
| Hazard Classification | Low |
| Last Inspection | 10/20/2022 |
| Emergency Action Plan | Not Required |