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In the limestone-rich area of Simpson County, more than three-quarters of drilled wells in uplands are adequate for a domestic supply. Yields as high as 50 gallons per minute have been reported from wells penetrating large solution channels. In the low-lying areas in the Red River, Drakes Creek, Lick Creek, and Sulfur Fork Valleys, most wells are inadequate for domestic use, unless the well intercepts a major solution opening in the limestone; in that case the yield could be very large. Springs with flows ranging from a few gallons per minute to 2,930 gallons per minute are found in the county. Minimum flows generally occur in early fall, maximum flows in late winter. |
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