CIVIL ENGINEERING PROJECT PROFILE

Jackson Summit Dam Rehabilitation, Gloversville, New York

A new spillway for the Jackson Summit Reservoir Dam was constructed in 1997, but within five years of its construction seepage was occurring under and around its ogee weir, training walls and outlet channel. The seepage caused the soils beneath the spillway's channel to erode, undermining the channel. Without support, the channel slab cracked and settled. C.T. Male Associates, P.C. was retained by the Board of Water Commissioners to prepare plans and specifications for the spillway's repair.  These included tube-a-manchette grouting of the soils beneath and to each side of the spillway to form a cutoff wall to inhibit seepage, and the removal and replacement of the spillway channel together with the installation of an underslab drainage system. Construction of the remedial work was completed in 2003 and was monitored on a full-time basis by a representative of C.T. Male.