Project Detail
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Stillwater Eel Passage and Dam Repair

Location:
Old Town, ME
Completed:
2015

Scope of Work

Cianbro completed the demolition and replacement of an existing dam structure on an island in the Stillwater River.

Project Details

  • Demolished ledge and existing dam structure
  • Formed 0.60 tons rebar and placed a 40-foot by 60-foot concrete eel passage (ramp)
  • Installed an eel substrate
  • Installed AquaDam to keep river flow out of the work area
  • Formed 0.75 tons rebar and placed a new 30-foot by 6-foot dam to match the original
  • Installed new flashboards and tie-off stanchions

Lean, Innovative, and Unique Project Solutions

Cianbro was faced with the major challenge of working in a tight, limited space at the edge of the dam, which required traversing the narrow, shallow river with a barge. The weather and river conditions were also challenging as there were several high water days that flooded the work area.