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Limestone and siltstone are the prominent rock types found in the western two-thirds of Pulaski County. About three-quarters of the wells drilled in western Pulaski County yield enough for a domestic supply; some yields from large solution openings in karst areas are greater than 50 gallons per minute. In the low-lying areas of western Pulaski County, only a few wells yield enough water for a domestic supply, except near the Cumberland River. In the eastern third of the county, the geology changes to sandstone and shales. Less than half of the wells drilled in this part of the county will produce enough water for a domestic supply. In low-lying areas bordering streams, very few wells yield enough water for a domestic supply, except in the limited area south of Burnside, where most wells are adequate, especially wells that penetrate large solution channels within the limestone bedrock. |
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