Ground-water levels in Arkansas, spring 1989

Groundwater level measurements were made in 527 wells in Arkansas in the spring of 1989. These data are listed in tables by aquifer and then by county. For each well, the altitude of the land surface, the date of measurement, the depth to the water surface, and the altitude of the water surface are reported. Also reported are the net changes in water levels between 1988 and 1989 and between 1984 and 1989. This report also contains maps showing the average water level change, by county, between the years 1984 and 1989 for the aquifers in the Quaternary deposits and in the Sparta Quaternary deposits and in the Sparta and Memphis Sands. The aquifers in the Quaternary deposits and in the Sparta and Memphis Sands are important in eastern and southern Arkansas for agricultural, municipal, and industrial use. Water level data contained in this report showed an average decline of 1.86 ft in the aquifer in the Quaternary deposits, for the 27 most heavily irrigated counties of eastern Arkansas, and an average decline of 4.06 ft in the aquifer in the Sparta and Memphis Sands between the years 1984 and 1989. (USGS)