Adelaide
High Hazard ConditionEmergency Action Plan: Yes
Location
| State | Wyoming |
| County | Big Horn |
| Nearest City | SHELL |
| River/Stream | ADELAIDE CREEK |
| Coordinates | 44.52520, -107.40460 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 74 ft |
| Dam Height | 74 ft |
| Dam Length | 805 ft |
| Year Completed | 1990 (36 years old) |
Storage & Hydraulics
| NID Storage | 5,835 acre-ft |
| Max Storage | 5,835 acre-ft |
| Normal Storage | 4,764 acre-ft |
| Surface Area | 145 acres |
| Drainage Area | 3 sq mi |
| Max Discharge | 5,431 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Irrigation |
| Owner | SHELL VALLEY WATERSHED IMPROVEMENT DIST. |
| Owner Type | Private |
| Hazard Classification | High |
| Last Inspection | 10/01/2025 |
| Emergency Action Plan | Yes |