Alafia River Minimum Flows and Levels - Southwest Florida Water ...

Figure 2-29. Graphical results of Kendall's tau for trend in daily flow (corrected for
withdrawals) for Lithia Springs Major for period 1983 to 2002. The slope of the Thiel line is
0.00245 with a p-value of 0.0000.
Buckhorn Springs Main Discharge
Buckhorn Springs Main daily discharge corrected for withdrawals is shown in
Figure 2-30. Again, despite the period of record drought, a Kendall's tau test of
the daily flows against time indicates a significant increasing trend in flow for
Buckhorn Springs (Figure 2-31; p=0.0000; slope = 0.00047). Since 1987, the
mean annual flow of Buckhorn Springs corrected for withdrawals has been 13
cfs, with all mean annual flows ranging from 10 to 15 cfs. In contrast to Lithia
Springs, Buckhorn Springs flow varies over a relatively narrow range.
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