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A statewide monitoring network for natural ground-water levels does not exist for Tennessee. Ground-water use for public-water supply in Tennessee has increased from 160 million gallons per day in 1970 to more than 260 million gallons per day in 2000. During that period, the number of monitoring wells for natural conditions decreased from 26 wells in 1970 to 7 wells in 2000. Along with the decrease in number of well, the coverage of major aquifer systems and physiographic provinces in Tennessee has decreased. Currently, natural water-level conditions are not being monitored in the alluvial aquifers, the Cretaceous aquifers, the western and northern Highland Rim, the Central Basin, the Cumberland Plateau, and the northeastern Valley and Ridge. The decrease in the number of statewide monitoring wells has affected the ability to evaluate drought conditions and prevents the evaluation of short-term water-level trends against historic conditions.
U.S. Department of the Interior, U.S. Geological Survey
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