Georgetown Dam
Georgetown Dam is a dam located in Deer Lodge County, Montana, built in 1900. It carries a High hazard potential classification and has a satisfactory condition assessment.
About Georgetown Dam
The primary purpose of Georgetown Dam is hydroelectric. The dam generates hydroelectric power by channeling water through turbines, converting the energy of flowing water into electricity. The dam is owned by Granite County Montana (local government).
The dam stands 55 feet tall and stretches 525 feet across, creates a reservoir covering 2,850 acres, and has a maximum storage capacity of 77,500 acre-feet. Completed in 1900, the structure is over a century old.
This dam carries a high hazard potential classification, which means that a failure or uncontrolled release of water would likely cause loss of human life. This classification reflects the consequences of failure, not the likelihood — it indicates that people live or work in the area downstream. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. An emergency action plan is in place for this dam. The most recent inspection on record was 07/22/2021.
At 55 feet, this dam is taller than 94% of dams nationwide.
Living Downstream
If you live or work downstream of this dam, consider taking these steps: learn your local evacuation routes, check whether your county emergency management office has a dam failure inundation map, and sign up for local emergency alerts. The Montana dam safety program can provide more specific information about emergency planning for this structure.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | Montana |
| County | Deer Lodge |
| Coordinates | 46.21478, -113.28014 |
Physical Characteristics
| NID Height | 55 ft |
| Dam Height | 55 ft |
| Dam Length | 525 ft |
| Year Completed | 1900 (126 years old) |
Storage & Hydraulics
| NID Storage | 77,500 acre-ft |
| Max Storage | 77,500 acre-ft |
| Normal Storage | 31,040 acre-ft |
| Surface Area | 2,850 acres |
| Max Discharge | 1,400 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Hydroelectric |
| Owner | Granite County Montana |
| Owner Type | Local Government |
| Hazard Classification | High |
| Condition Assessment | Satisfactory |
| Last Inspection | 07/22/2021 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | MT00225 |
| Federal ID | MT00225 |
| More Info | State Dam Safety Program |