There are three maps in this set, which were prepared in 1966-68 as part of a study on the water resources of the Black River basin in cooperation with the New York State Department of Environmental Conservation. The data presented on the maps show well locations, well yield from bedrock aquifers, and well yield from unconsolidated aquifers. The well location map shows locations of all wells represented in the initial report. The well yields given on the bedrock aquifer map were recorrelated with the most recent New York State geologic maps; the well yields shown on the unconsolidated aquifer map are correlated with a surficial geology map of the area. (Lantz-PTT)