The altitude of the water levels in the Triassic sandstones and shales in northeastern Chester County is shown on a map at a scale of 1:24,000. The map is based on water levels in 173 non-pumping drilled and dug wells measured in 1956 and 1965, and on the altitude of two springs that were flowing in November and December 1987. Water level altitudes are contoured at an interval of 20 ft. The surface defined by the contoured water levels may approximately represent the water table. Water table altitudes range from 379 ft to less than 80 ft above sea level. (USGS)
Additional publication details
USGS Numbered Series
Altitude and configuration of the potentiometric surface in the Triassic sandstones and shales, northeastern Chester County, Pennsylvania, September 1987 through January 1988
Water-Resources Investigations Report
U.S. Geological Survey
Pennsylvania Water Science Center
1 map : photocopy ; 62 x 74 cm., on sheet 88 x 95 cm., folded in envelope 31 x 26 cm.