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A regional ground-water study was conducted in the Delaware City industrial area, Delaware, to study the effects that remediation practices have had on ground-water-flow directions. This report presents water-level data collected as part of the regional study from 171 wells and one surface-water site at Red Lion Creek in the Delaware City industrial area during 1993-94. Eight sets of synoptic ground-water-level measurements collected between April 1993 and September 1994, and site information for the 171 wells are presented. Hydrographs of continuous-record water-level data for eight wells and one surface-water site at Red Lion Creek are presented. The U.S. Geological Survey and the U.S. Army Corps of Engineers collected water-level data in 1993 and 1994 for the study and the Delaware Department of Natural Resources and Environmental Control provided well information. The U.S. Army Corps of Engineers collected synoptic ground-waterlevel data from wells within the Delaware City industrial area approximately once every 2 months during April 1993 through September 1994. Data from eight sets of synoptic ground-water-level surveys were collected. The U.S. Geological Survey installed digital recorders at eight wells and one surface-water site at Red Lion Creek within the Delaware City industrial area. The digital recorders at the eight wells recorded the continuous ground-water-level data at 1-hour intervals from October 15, 1993 through November 8, 1994. At the Red Lion Creek site, the U.S. Geological Survey collected continuously recorded surface-water levels at 1-hour intervals from December 10, 1993 through November 8, 1994.

Water-level data for the industrial area northwest of Delaware City, Delaware, 1993-94