We went to a town hall meeting event hosted by the Quinte Conservation area, regarding the repair of the Colebrook Dam. Since the last major repairs in the early 1980’s, a lot of the concrete used has cracked and gone missing. One wonders if this was the same concrete supplier as used in many of the Quebec highway bridges (that were falling apart and down in the last few years). In any event, it will be a summer-fall project involving lowering the head water levels down about a meter while the top is redone with better concrete and more reinforcements and tie-ins, and then more work on adding support buttresses along the downstream side of the wall.
We have had 8″ of rain in June, and with water tables very high, we are not at all concerned about dry walls caused by the lowering of the headpond.