REPORT OF INVESTIGATIONS No. 42


upper pool at Cherry Lake outlet. The fall between Lakes Louisa
and Minnehaha was 0.4 foot during this period.
 The channel below Cherry Lake has been improved by a canal
leading into Lake Lucy and Lake Emma. Palatlakaha Creek follows
a more definite channel with steep gradient from Lake Emma to
its mouth at Lake Harris. The fall in this reach is about 32 feet
in 12 miles.


 STREAMFLOW

 Streamflow data. for gaging stations in the Palatlakaha Creek
basin during the data-collection phase of the investigation are
summarized in table 6.
 The flow-duration curve for Big Creek near Clermont (station
3), adjusted from the short-term period to the 311/-year period,
1931-62, is shown in figure 15. Long-term records for the
Withlacoochee River at Trilby (station 42) were used for the
adjustment because discharges at other long-term downstream
stations on the Oklawaha River are partly regulated by
water-control structures.
 Streamflow of the headwaters of the Palatlakaha Creek
upstream from Lake Louisa is unregulated. Since 1956, the flow
below Lake Louisa has been regulated by a water-control structure
at the outlet of Cherry Lake. During periods of low rainfall, most
of the drainage from the 160-square mile basin above Cherry Lake
Outlet is stored in the chain of large lakes and marshes between
Lake Louisa and Cherry Lake.
 Comparison of peak discharges during floods in March 1960
 and September 1960 in Big Creek, Little Creek, and the upper
 Withlacoochee River shows the effect of the interconnections
 between the Little Creek and the Withlacoochee River basins. The
 peak discharge for the March 1960 flood in Big Creek at station 3
 was 628 cfs. The discharge in Little Creek measured at station 6
 near the peak of this flood was 801 cfs. The higher discharge from
 the smaller drainage area of Little Creek indicates that most of the
 flow was draining from the Withlacoochee basin into Little Creek
 through saddles in the drainage divide.
 The peak discharge during the flood of September 1960 for Big
 Creek at station 3 was 691 cfs. The concurrent flood peak for Little
 Creek at station 5 was 400 cfs. The flood peak for Withlacoochee
 River near Eva (station 36) was 2,160 cfs in March 1960 and 1,290