Terzaghi, Cheakamus and Seton Dams

Lillooet & Squamish, BC

Complete rehabilitation of 3 spillways

HMI was mandated for all the mechanical work related to the spillway rehabilitation program work at the Terzaghi, Cheakamus and Seton dams in British Columbia.

New control building

HMI has also proceeded with all the final electrical connections as well as the connection of various peripheral.

The challenge

  • Provide an improved design to meet the client’s requirements in the rehabilitation program of the spillway gates.
  • Coordination between three (3) sites, each having their own constraints.
  • Meet tight deadlines at the same time as ensuring the expected performances

The result

  • Achieved the contractual expectations for all three (3) projects.
  • Developed a partnership with BC Hydro regarding the complete spillway gates rehabilitation program.
  • Established a business place in British Columbia.


$ 31.0 Million


Completed in 2011

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