Yellowtail Dam
High HazardNot Available ConditionEmergency Action Plan: Yes
Location
| State | Montana |
| County | Big Horn |
| Nearest City | FORT SMITH |
| River/Stream | BIGHORN RIVER |
| Coordinates | 45.30680, -107.95810 |
Physical Characteristics
| Dam Type | Concrete |
| NID Height | 525 ft |
| Dam Height | 491 ft |
| Dam Length | 1,480 ft |
| Year Completed | 1966 (60 years old) |
Storage & Hydraulics
| NID Storage | 1,331,725 acre-ft |
| Max Storage | 1,331,725 acre-ft |
| Normal Storage | 1,020,573 acre-ft |
| Surface Area | 17,958 acres |
| Drainage Area | 19,627 sq mi |
| Max Discharge | 92,000 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Owner | BUREAU OF RECLAMATION |
| Owner Type | Federal |
| Hazard Classification | High |
| Condition Assessment | Not Available |
| Last Inspection | 04/25/2023 |
| Emergency Action Plan | Yes |