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Water-level conditions in the Black Creek aquifer, 1992-98, in parts of Bladen, Hoke, Robeson, and Scotland Counties, North Carolina

Water-Resources Investigations Report 00-4138
By A.G. Strickland

Abstract

Ground-water levels were monitored between September 1992 and December 1998 in 21 wells that are screened in the Black Creek aquifer throughout a 2,000-square-mile area in Bladen, Hoke, Robeson, and Scotland Counties, North Carolina. Observed water levels have changed little in the Black Creek aquifer throughout most of the area since 1992. Water levels have declined in some areas, however, as a result of pumping. The greatest decline was 30.8 feet near Laurinburg in Scotland County during 1993-98.

During the fall of 1998, water-level measurements made in 291 wells in or near Bladen, Hoke, Robeson, and Scotland Counties were used to map the potentiometric surface of the Black Creek aquifer. The map of the potentiometric surface can be used to infer the general direction of ground-water flow from recharge areas in the uplands to discharge areas at local streams and wells. Withdrawals from wells at pumping centers, such as areas around Elizabethtown in Bladen County and Lumberton in Robeson County, have caused ground water to flow toward the pumped wells, resulting in cones of depression in the potentiometric surface. In 1998, the major axes of the cones of depression were about 5 and 7 miles in length beneath the Elizabethtown and Lumberton areas, respectively. In southwestern Bladen County, where the Black Creek aquifer is overlain by the Peedee aquifer and the Black Creek confining unit, most ground water does not discharge to local streams but flows southeastward toward the coast or is discharged from pumped wells.

Strickland, A.G., 2000, Water-level conditions in the Black Creek aquifer, 1992-98, in parts of Bladen, Hoke, Robeson, and Scotland Counties, North Carolina: U.S. Geological Survey Water-Resources Investigations Report 00-4138, 23 p. + 1 pl.