Lake Desmet (south Dam)
High HazardFair ConditionEmergency Action Plan: Yes
Location
| State | Wyoming |
| County | Johnson |
| Nearest City | UCROSS |
| River/Stream | PINEY AND ROCK CREEK |
| Coordinates | 44.45018, -106.71940 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 120 ft |
| Dam Height | 80 ft |
| Dam Length | 4,000 ft |
| Year Completed | 1975 (51 years old) |
Storage & Hydraulics
| NID Storage | 234,987 acre-ft |
| Max Storage | 234,987 acre-ft |
| Normal Storage | 111,827 acre-ft |
| Surface Area | 2,653 acres |
| Drainage Area | 40 sq mi |
| Max Discharge | 8,520 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Water Supply |
| Owner | JOHNSON COUNTY-LAKE DESMET OPERATING DEPT |
| Owner Type | Local Government |
| Hazard Classification | High |
| Condition Assessment | Fair |
| Last Inspection | 06/26/2024 |
| Emergency Action Plan | Yes |