Ackley Lake Dam
High HazardSatisfactory ConditionEmergency Action Plan: Yes
Location
| State | Montana |
| County | Judith Basin |
| Nearest City | NONE |
| River/Stream | TR-HAUCK COULEE |
| Coordinates | 46.95857, -109.93290 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 55 ft |
| Dam Height | 55 ft |
| Dam Length | 3,514 ft |
| Year Completed | 1938 (88 years old) |
Storage & Hydraulics
| NID Storage | 8,315 acre-ft |
| Max Storage | 8,315 acre-ft |
| Normal Storage | 5,970 acre-ft |
| Surface Area | 260 acres |
| Drainage Area | 2 sq mi |
| Max Discharge | 1,410 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Irrigation |
| Owner | STATE WATER PROJECTS |
| Owner Type | State |
| Hazard Classification | High |
| Condition Assessment | Satisfactory |
| Last Inspection | 10/03/2024 |
| Emergency Action Plan | Yes |