Four test wells were drilled near Cedar Grove in Carroll County, Tennessee, in 1991 to obtain geologic and hydrologic information about the post-Cretaceous strata in the study area. Samples of cuttings and geophysical logs were used to determine the lithology and stratigraphy at the drilling sites. Specific-capacity tests and water-quality analyses were conducted at two test wells completed in the Memphis Sand. Yields of the two test wells were 275 gallons per minute and greater than 350 gallons per minute. The specific capacities for the two wells equalled 17.8 and 10.0 gallons per minute per foot of drawdown, respectively.