Potentiometric surface of the Black Creek acquifer in the central coastal plain of North Carolina

Potentiometric surface of the Black Creek acquifer in the central coastal plain of North Carolina. William L. Lyke & M. D. Winner; US Geological Survey & NC Dept. of Natural Resources. Scale: 7/16 = 5 mi.; 24x29. 1986. Water Resources Investigations Report 87-4233.