Mission
High HazardFair ConditionEmergency Action Plan: Yes
Location
| State | Montana |
| County | Lake |
| Nearest City | St. Ignatius |
| River/Stream | Mission Creek |
| Coordinates | 47.31450, -114.02150 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 98 ft |
| Dam Height | 83 ft |
| Dam Length | 1,848 ft |
| Year Completed | 1935 (91 years old) |
Storage & Hydraulics
| NID Storage | 10,722 acre-ft |
| Max Storage | 10,722 acre-ft |
| Normal Storage | 8,430 acre-ft |
| Surface Area | 292 acres |
| Drainage Area | 14 sq mi |
| Max Discharge | 12,000 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Irrigation |
| Owner | BIA |
| Owner Type | Federal |
| Hazard Classification | High |
| Condition Assessment | Fair |
| Last Inspection | 10/10/2024 |
| Emergency Action Plan | Yes |