OwnerAppalachian Mountain Club
5 Joy Street
Boston, MA 02108
Project TypeDam Reconstruction
99 Main Street
Topsham, ME 04086
Start / FinishSeptember 10, 2015 - October 9, 2015
Description / Significance
This project consisted of the demolition of the existing dam that had been built too high and the construction of a new “nature-like” rock spillway, including:
- A small low-flow channel fishway, also made of cobbles, but deeper so fish can pass during periods of low water.
- Primary spillway, which is the 70 foot wide section of the dam, is also roughened with rocks and boulders to provide for the passable conditions at high flows.
- Installation of temporary culverts to ensure constant flow while reconstruction occurred.
- Installed of 60-mil HDPE liner, placed vertically all the way across the dam.