The depth to water table was measured at 276 groundwater monitoring wells (observation and supply) screened in the upper glacial and Magothy aquifers during April and May of 2016. This shapefile consists of the locations of those sites where water levels were measured and includes depth-to-water values which are stored in the attribute table. The shapefile was created and intended for use with geographic information system (GIS) software. The measurement locations and depth-to-water values in this digital data set are also presented in Sheet 4 of Scientific Investigations Map 3398.