Collins Detention Reservoir
Low Hazard ConditionEmergency Action Plan: Not Required
Location
| State | Montana |
| County | Valley |
| Nearest City | NASHUA |
| River/Stream | WILLOW CREEK |
| Coordinates | 47.90070, -106.89020 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 41 ft |
| Dam Height | 27 ft |
| Dam Length | 3,571 ft |
| Year Completed | 1957 (69 years old) |
Storage & Hydraulics
| NID Storage | 1,700 acre-ft |
| Max Storage | 1,700 acre-ft |
| Normal Storage | 1,350 acre-ft |
| Drainage Area | 13 sq mi |
Ownership & Safety
| Purpose | Fire Protection, Stock, Or Small Fish Pond |
| Owner | SILVER DOLLAR GRAZING ASSN |
| Owner Type | Private |
| Hazard Classification | Low |
| Emergency Action Plan | Not Required |