Tiber Dam, located in Liberty County, Montana, along the Marias River, is a vital structure managed by the Bureau of Reclamation for flood risk reduction.
Wind
Humidity
Completed in 1955, this earth dam stands at 206 feet tall with a hydraulic height of 197 feet, providing essential water storage of up to 1.4 million acre-feet. With a primary purpose of flood risk reduction, Tiber Dam also serves irrigation, recreation, and water supply needs in the region.
The dam's controlled spillway, with a width of 66 feet, helps manage water flow and prevent potential hazards, earning it a high hazard potential rating. Although its condition assessment is not available, regular inspections by the Bureau of Reclamation ensure the dam's structural integrity. Tiber Dam's very high risk assessment underscores the critical role it plays in protecting the surrounding area from flooding events, highlighting the importance of ongoing risk management measures and emergency preparedness.
As a key infrastructure managed by federal agencies, Tiber Dam reflects the collaborative efforts to safeguard water resources and mitigate climate-related risks. Its strategic location, significant storage capacity, and multi-purpose functionality make it a crucial asset for water management in Montana, emphasizing the intersection of infrastructure, water resources, and climate resilience.
Year Completed |
1955 |
Dam Length |
4526 |
Dam Height |
206 |
River Or Stream |
MARIAS RIVER |
Primary Dam Type |
Earth |
Surface Area |
23805 |
Hydraulic Height |
197 |
Drainage Area |
4393 |
Nid Storage |
1424478 |
Structural Height |
206 |
Hazard Potential |
High |
Foundations |
Rock |
Nid Height |
206 |
Marias River Near Chester Mt
|
249cfs |
Teton River Near Dutton Mt
|
83cfs |
Marias River Near Loma Mt
|
335cfs |
Marias River Near Shelby Mt
|
305cfs |
Teton River At Loma Mt
|
30cfs |
Missouri River At Fort Benton Mt
|
4720cfs |