https://www.usgs.gov/publications/altitude-and-configuration-potentiometric-surfaces-upper-and-lower-aquifer-systems
The mapped area in underlain by layered sedimentary rocks chiefly consisting of shale, mudstone, siltstone, and argillite and by a diabase sheet thtat has...
altitudeconfigurationpotentiometricsurfacesupper
https://www.usgs.gov/maps/altitude-and-configuration-potentiometric-surface-lower-white-clay-creek-and-upper-christina
Since 1984, the U.S. Geological Survey (USGS) has been mapping the altitude and configuration of the potentiometric surface in Chester County as part of an...
potentiometric surfacealtitudeconfigurationlower
https://www.usgs.gov/publications/potentiometric-surface-aquia-aquifer-southern-maryland-september-1985
The potentiometric map is highlighted with indications concerning: (1) outcrop areas of the Aquia aquifer; (2) the potentiometric contour of the aquifer; (3)...
potentiometric surfacesouthern marylandaquiaaquifer