Potentiometric surfaces of the upper glacial and Magothy aquifers and selected streamflow statistics, 1943-72, on Long Island, New York

Abstract

A brief text describes the two major aquifers and the discharge pattern of major streams on Long Island. Four water-table maps for the years 1943, 1959, 1966, and 1972, an average water-table map for the period 1943-72 supplemented by five well hydrographs representing Kings, Queens, western Nassau, eastern Nassau, and Suffolk Counties, and three potentiometricsurface maps of the Magothy aquifer for the years 1959, 1966, and 1972 are included. A statistical summary of stream discharge presents average annual discharges, annual average discharges, and average 7-day, 10-year low-flow discharges for major streams.

Geohydrology of the northern part of the town of Brookhaven, Suffolk County, New York

“…The most recent water-table maps that include the area are by Kimmel (1971) for 1970; Koszalka and Koch (1974) and Jensen andSoren (1974) for 1971;Vaupel andothers (1977) for 1972;Koszalka (1975Koszalka ( ) for 1974Nakao andEhrlichman (1978) for 1975;and Koszalka (1980) for 1979. In addition to these maps, the Suffolk County Department of Health Services has prepared yearly water-table maps for the entire county since 1977.…”