West Fork Bitterroot (painted Rocks)
High HazardPoor ConditionEmergency Action Plan: Yes
Location
| State | Montana |
| County | Ravalli |
| Nearest City | DARBY |
| River/Stream | WEST FORK OF BITTERROOT |
| Coordinates | 45.71740, -114.28140 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 143 ft |
| Dam Height | 143 ft |
| Dam Length | 800 ft |
| Year Completed | 1940 (86 years old) |
Storage & Hydraulics
| NID Storage | 45,100 acre-ft |
| Max Storage | 45,100 acre-ft |
| Normal Storage | 31,706 acre-ft |
| Surface Area | 655 acres |
| Drainage Area | 316 sq mi |
| Max Discharge | 3,300 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Irrigation |
| Owner | STATE WATER PROJECTS |
| Owner Type | State |
| Hazard Classification | High |
| Condition Assessment | Poor |
| Last Inspection | 06/18/2024 |
| Emergency Action Plan | Yes |