REPORT OF INVESTIGATIONS No. 40


 The hydrograph for the shallow well shows the water-level changes
during the last 15 years in an area where there is not much withdrawal
of ground water. When compared to rainfall records, the graph shows a
general correlation with rainfall and reflects a very wet period from
1944-49, a relatively dry period from 1950-55, a wet period from

 90 I I I i- i- i i I- I- -I -
 Well 037-645-1, 18 miles east of
 Milton (in the upper limestone of the
 Floridon aquifer') Depth 690 feet.



 85



 ,.-,

 80 -7
 75 ____-






 0 5 10 15 miles

 = Well 032-648-1, 15 miles southeast of
 S55 Milton (in the sand and grovel
 Soaquifer) Depth 197 feet.




 50 4 A .






 Figure 35. Hydrographs of wells 037-645-1 and 032-648-1.

 1956-61, and another dry year in 1962. The effect of 90.41 inches of
 rainfall in 1953, the highest recorded in 83 years at Pensacola, is shown
 by the rise in water levels during 1953 and the first part of 1954. How-
 ever, this trend in the water level was reversed by the effect of the low-
 est rainfall on record, 28.68 inches, in 1954. Declining water levels dur-
 ing 1954 and the first half of 1955 reflect this low rainfall. The maximum