The season of heavy rainfall usually includes the summer and
early fall. In this season the rainfall comes in showers and may be irregularly distributed. The average annual precipitation1 is 50 to
55 inches except in the northwestern part of the county where it is less
than 50 inches.
Monthly and annual precipitation, in inches, at Sanford.
(U. S. Weather Bureau)
Year Jan. Feb. Mar. Apr. May June July Aug. Sept. Oct. Nov. Dec. Ann.
1932 1.48 0.34 3.07 0.99 5.25 8.03 0.85 8.45 4.27 1.53 5.09 0.06 39.41
1883
to 2.21 2.11 3.08 2.80 4.02 7.21 7.57 6.31 5.99 5.46 1.70 2.58 51.04
1932
emmm mmmmmmmmmm mmmememw mmm-emwmeme me m
Geology
The geologic formations that underlie Florida are described
in a report by Cooke and Mossom2, which includes a map showing the distribution of the formations at or near the surface. In Seminole
County the Ocala limestone, of Eocene age, is present about 50 to 150
feet below the surface. The formation is underlain by undifferentiated
Map showing normal annual temperature and precipitation as compiled from all available records to 1920, inclusive: U. S. Weather Bureau
Climatological Data, Florida section, Vol. 34, No. 13, opposite p. 52,
1930.
2Cooke, C. W., and Mossom, Stuart, op. cit., pp. 31-227.
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