Deadman's Basin Terminal Outlet Replacement (2010)
Deadman's Basin Dam History
|
|
Project History Annual inspections reported numerous issues with the dam and outlet structure including: seepage, erosion behind the outlet structure and outlet structure deterioration. In 2003, the DNRC performed seepage modeling on the dam and found that high uplift pressures existed at the dam toe and the exit gradient of seepage did not meet Montana Dam Safety Act Standards. Additional analysis completed by the engineering consultant found that a toe berm and filter significantly increased the factor of safety, rendering the dam compliant to Montana Dam Safety Act Standards. It was decided to move forward with improvements and investigate funding sources for the project. |
|
Work Breakdown
|