1. Geohydrology of the valley-fill aquifer in the Elmira area, Chemung County, New York [cartographic material] Yale Public content 1982. 2002-06-01T04:00:00Z. 2023-03-15T03:01:18Z. Geological Survey (U.S.). The Survey. English. cartographic image. Public. New York (State), Elmira Region, and Elmira region (N.Y.).