Ruby Dam
High HazardSatisfactory ConditionEmergency Action Plan: Yes
Location
| State | Montana |
| County | Madison |
| Nearest City | ALDER |
| River/Stream | RUBY RIVER |
| Coordinates | 45.23940, -112.11050 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 111 ft |
| Dam Height | 111 ft |
| Dam Length | 846 ft |
| Year Completed | 1938 (88 years old) |
Storage & Hydraulics
| NID Storage | 56,355 acre-ft |
| Max Storage | 56,355 acre-ft |
| Normal Storage | 37,611 acre-ft |
| Surface Area | 970 acres |
| Drainage Area | 595 sq mi |
| Max Discharge | 36,000 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Irrigation |
| Owner | STATE WATER PROJECTS |
| Owner Type | State |
| Hazard Classification | High |
| Condition Assessment | Satisfactory |
| Last Inspection | 05/31/2024 |
| Emergency Action Plan | Yes |