FLORIDA GEOLOGICAL SURVEY


   At the end of January 1964 when the paper company began using water from Deer Point Lake, all of the wells that had been pumping from the Floridan aquifer were shut down. In four days water levels in the aquifer recovered from about 200 to 83 feet below mean sea level near the old center of pumping and from 105 to 58 feet below mean sea level on the east edge of the field. After 51 days, water levels had recovered to 21 feet below mean sea level near the center and to about mean sea level on the east edge of the field.
   in 1936 Panama City built a water plant in the Millville area. This plant was initially supplied by wells in the water-table aquifer, but later supplied by wells drilled into the Floridan aquifer. In 1955 a well drilled into the Floridan aquifer bad a water level of 63 feet below mean sea level. In October 1962, after all pumps were shut off for a period of 6 hours, the water level in this well was 72 feet below mean sea level, a net decline of 9 feet from 1955 when the wen was drilled- The decline in water levels is attributed to pumping from this well field and from the nearby paper company well field.
   Another public water-supply system for Panama City was constructed in the St. Andrew section during late 1942 and 1943. When the fixst of the original seven wells were drilled the water level in the Floridan aquifer stood at about mean sea level. By mid-1943, when the last of the seven wells was drilled, pumping from the first wells had lowered the water level in the vicinity about -20 feet. In October 1954, when an eighth well was added to the well field, the pumping level had been lowered to 67 feet below mean sea level. This drawdown of 67 feet resulted from pumping at an average rate of 1.6 mgd.
   Measurements of water-level in the St. Andrew well field in October 1962, after a 6-hour recovery from pumping, showed the water level to be 87 feet below mean sea level near the center of the field. The additional drawdown of 20 feet in the center of the field during the 9-year period from 1954 to 1962 represents the effect of pumping at 2.0 mgd, an increase of 0.4 mgd in the average daily pumping rate.
   A well field consisting of four gravel-packed, screened wells in the water-table aquifer was constructed at Tyndall Air Force Base in 1941 to supply water for the base, then under construction. It was found that this aquifer would not supply sufficient water so it became necessary to develop a supply from the Floridan aquifer. Wh en the wells were drilled in the Floridan aquifer the water level stood about 8 feet above mean sea level. By 1946 the water level had lowered to about 10 feet below mean sea level. In 1961 pumping levels in the Floridan aquifer were as much as 82 feet below mean sea level near