Geospatial Dataset of Water-Table and Potentiometric-Surface Altitudes in the Upper Glacial, Magothy, and Lloyd Aquifers of Long Island, New York, March–April 2006

This data release contains geospatial data defining estimates of the depth to water and water-table altitude in the upper glacial and Magothy Aquifers, the potentiometric surface of the confined Magothy and Jameco Aquifers, and the�potentiometric surface of the Lloyd and North Shore Aquifers on Long Island, New York. Estimates are based on 502 water-level measurements�made in wells across Long Island during March-April 2006. Water-table contours were interpolated using measurements from 341 wells screened in the upper glacial aquifer or shallow Magothy Aquifer. Potentiometric-surface contours in the confined Magothy and hydraulically connected Jameco Aquifer were interpolated using measurements from 102 wells. Potentiometric-surface contours in the Lloyd and North Shore Aquifer were interpolated from measurements at 59 wells screened in those aquifers.

本次发布的数据集包含地理空间数据（geospatial data），可用于估算纽约州长岛地区上冰川含水层与马戈西含水层（Magothy Aquifer）的地下水埋深（depth to water）、地下水位高程（water-table altitude），承压马戈西含水层及杰米科含水层（Jameco Aquifer）的测压水面（potentiometric surface），以及劳埃德含水层与北岸含水层的测压水面。本次估算基于2006年3月至4月间在长岛全域范围内的监测井中采集的502组水位测量数据。其中，地下水位等值线通过对上冰川含水层或浅部马戈西含水层中341口设有滤管的监测井的测量数据插值生成；承压马戈西含水层与水力连通的杰米科含水层的测压水面等值线，通过102口监测井的测量数据插值生成；劳埃德含水层与北岸含水层的测压水面等值线，则基于该类含水层中59口设有滤管的监测井的测量数据插值绘制。