New York State 's need to develop a groundwater management strategy for the protection of its aquifers led, in 1985, to a cooperative program between the U.S. Geological Survey and the New York State Department of Environmental Conservation, through the Genesee/Finger Lakes Regional Planning Council, to publish basinwide groundwater availability maps. As a part of this program, several maps that had been compiled during the 1960s, were selected for publication through a grant between the State and several regional planning agencies. These maps depict the surficial geology and groundwater availability of the basin at 1:125,000 scale. Each map consists of two sheets; sheets 1 and 2 depict the groundwater availability and geology of the northern and southern parts of the basin, and sheets 3 and 4 depict well and test-hole locations within the northern and southern parts of the basin. (Lantz-PTT)