REPORT OF INVESTIGATIONS NO. 42


5000


IL


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a z
2 (0



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100
 *
 *


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100 -- -
 (1956 62)
 50 ____


40 60 80 100 120 140 I1
 MINERAL CONTENT, IN
 PARTS PER MILLION


;0 180


200


i Figure 17. Relation of mineral content to discharge, Hillsborough River near
 Zephyrhills.

 KISSIMMEE RIVER BASIN

 RELATION TO GREEN SWAMP AREA

 The eastern boundary of the Green Swamp area is U. S.
 Highway 27 atop the Lake Wales Ridge. This is generally the
 surface drainage divide between Palatlakaha Creek in the St. Johns
 River basin and headwater tributaries of the Kissimmee River.
 The surface drainage from only 5 square miles of the Green
 Swamp area flows eastward into the Kissimmee River basin.
 Piezometric maps in figures 35 and 36 indicate ground-water move-
 ment eastward from the Green Swamp area into the Kissimmee
 River basin.

 STREAMFLOW

 Horse Creek is one of the Kissimmee River tributaries adjacent
 to Green Swamp. Streamflow records of Horse Creek at Davenport
 (station 19) were collected to study the base flow that is derived