REPORT OF INVESTIGATIONS NO. 42


 tr) Lr 0 L r) ~
-n n 0 Un 0 -
 CALENDAR YEAR
 CALENDAR YEAR


Rainfall of Green Swamp area
computed from U. S. Weather
Bureau records at four stations,
weighted by Thiessen method
as follows:

 Station Percentage
Clermont 6S 37
Lake Alfred Exp. Sta. 22
Lakeland II
St. Leo 30
 100


 Based on records 1931-61

 IJ FI I I IMI JIJ J AIS O N D
 MONTH
Figure 6. Graphs showing annual and mean monthly rainfall of Green Swamp
 area.

 Water loss from a drainage basin is the difference between the
average rainfall over the basin and the runoff from the basin for a
given period (Williams, 1940, p. 3). In humid regions, where there
is sufficient water to satisfy the demands of vegetation, the mean
annual water loss is principally a function of temperature
(Langbein, 1949, p. 7). The relation between mean annual


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