Upper Stillwater Dam
High HazardNot Available ConditionEmergency Action Plan: Yes
Location
| State | Utah |
| County | Duchesne |
| Nearest City | DUCHESNE |
| River/Stream | ROCK CREEK |
| Coordinates | 40.55990, -110.69990 |
Physical Characteristics
| Dam Type | Concrete |
| NID Height | 292 ft |
| Dam Height | 285 ft |
| Dam Length | 2,660 ft |
| Year Completed | 1987 (39 years old) |
Storage & Hydraulics
| NID Storage | 35,253 acre-ft |
| Max Storage | 35,253 acre-ft |
| Normal Storage | 33,123 acre-ft |
| Surface Area | 329 acres |
| Drainage Area | 98 sq mi |
| Max Discharge | 75,000 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Irrigation |
| Owner | DEPARTMENT OF THE INTERIOR |
| Owner Type | Federal |
| Hazard Classification | High |
| Condition Assessment | Not Available |
| Last Inspection | 08/04/2021 |
| Emergency Action Plan | Yes |