FLORIDA GEOLOGICAL SURVEY


was less than 60 inches, the water level declined; and whenever the
annual rainfall exceeded 60 inches, the water level rose.
 The water level in well 031-716-1 was about 10 feet lower in 1959-60
than in 1948-49 (fig. 36). The graph of well 032-648-1 (fig. 35) shows
a high water level in 1948-49 and a similar high water level in 1959-60.
Industrial pumping at St. Regis, 7 miles north-northeast of well 031-716-1
is believed to be the principal factor limiting the rise of the water level
in 1959-60.
 Figure 36 shows the water level in- well 036-719-1 (152 feet deep) at
Cantonment. This hydrograph shows the decline usually associated with
continued, concentrated pumping in an area. During 23 years of record,
the water level fluctuated 42 feet. The highest water level was 65 feet
above sea level in 1941 and the lowest was 23 feet above sea level in
1957. The slight rise and then gentle decline of water levels for 1946-49
shows the effect of abnormally high rainfall.
 The sharp decline of the water level in well 036-719-1 stopped in
1956. Late in 1958 the water level started to recover. This recovery was
the result of the following: (1) several nearby wells were taken out of
service; (2) rainfall was above normal in 1956 and 1958-61; (3) a re-
charge experiment was conducted by St. Regis Paper Company; and
(4) the use of cooling towers that began in 1961 lowered the pumping
rate. During this recharge experiment cooling water was pumped into a
nearby well at a rate of a million gallons per day for a year. The recharge
well is located 2,170 feet from well 036-719-1 and the calculated time-
distance-recovery curves indicate that this amount of recharge would
cause the nonpumping water level in well 036-719-1 to rise from 1 to
2 feet.
 The hydrograph of well 036-716-1, about 3 miles east of Cantonment
 and about 1 mile west-northwest of the Chemstrand Corporation plant,
 is shown in figure 34. This well is 352 feet deep and is screened from
 260 to 270 feet and from 340 to 350 feet below the land surface. The
 water level is affected by pumping at two nearby industrial plants, the
 St. Regis Paper Company and the Chemstrand Corporation. The graph
 shows a maximum change of 16 feet during the 11 years of record, with
 the highest water level being 24 feet above sea level in 1951 and the
 lowest water level being 8 feet above sea level in 1959. The water level
 declined rapidly from 1951 to 1957 owing to pumping and below-normal
 rainfall. The water level was nearly stable during 1958 and recovered
 about 3 feet from 1959 to 1962 owing to above-normal rainfall, infiltra-
 tion of water from the Escambia River into the well field of the Chem-
 strand Corporation, and reduced pumpage at St. Regis and Chemstrand.