[§ler1e McPeeks -_~.s Geological surVe~ Rpt. 96-4063.tit Page 1 I Hydrogeology of the Surficial and Intermediate Aquifer Systems in Sarasota and Adjacent Counties, Florida By G.L. Barr U.S. GEOLOGICAL SURVEY Water-Resources Investigations Report 96-4063 Prepared in cooperation with SARASOTA COUNTY, FLORIDA, and the SOUTHWEST FLORIDA WATER MANAGEMENT DISTRICT Tallahassee, Florida 19% I Cylene Mc~e_el<s -_u s-Geological survey -~pt 96-4063til- Page2[ ., U.S. DEPARTMENT OF THE INTERIOR BRUCE BABBITT, Secretary U.S. GEOLOGICAL SURVEY Gordon P. Eaton, Director i ! f::!i!l!i't I Any use of trade, product, or firm names In this publication Is for descriptive purposes only and does not imply endorsement by the U.S. Geological Survey. I ' For additional information Copies of this report can be write to: purchased from: District Chief U.S. Geological Survey U.S. Geological Suovey Branch of Information Services Suite 3015 P.0. Box 25286 227 North Bronaugh Street Denver, CO 80225-()288 Tallahassee, Aorida 32301 _Cyleme McPeeks ~U.S Geolo~ical~ur:vey~R'!:p'.':t.~9~6:_:-4:::D~6~3:::.t".:_if_-·_--________________~~~-~P~a"'g'-e~3~1 CONTENTS Abstract ............................................................................................................................................................................ Introduction....................................................................................................................................................................... I Purpose and Scope....................................................................................................................................................... 2 Description of the Study Area ..................................................................................................................................... 2 Previous Investigations................................................................................................................................................ 4 Methods for Describing the Hydrogeology................................................................................................................. 5 Acknowledgments....................................................................................................................................................... 6 Hydrogeologic Framework............................................................................................................................................... 7 Surficial Aquifer System ............................................................................................................................................. 7 Intermediate Aquifer System ....................................................................................................................................... 10 Lithology and Age ............................................................................................................................................. 10 Areal Extent and Thickness ............................................................................................................................... II Hydraulic;; Properties .......................................................................................................................................... I2 Geologic Faulting .............................................................................................................................................. 12 Ground·WatcrUse ............................................................................................................................................................. 13 Ground·WaterQuality ....................................................................................................................................................... 13 Surficial Aquifer System ............................................................................................................................................. 14 Intennediate Aquifer System ....................................................................................................................................... 15 PenneableZone 1 .............................................................................................................................................. 15 i Permeable Zone 2 .............................................................................................................................................. 16 Permeable Zone 3 .............................................................................................................................................. 16 Carlton Reserve and South Venice Test Wells ................................................................................................... 17 Ground·Water Flow ........................................................................................................................................................... 18 - Summary ........................................................................................................................................................................... 18 Selected References ........................................................................................................................................................... 20 Figures [Most figures are located at the back of this report.] 1. Map showing location of the study area, ground· water quality study area, and test wells..................................... 3 2-4. Diagrams showing lithologic, hydrogeologic, and geophysical data at the: 2. Carlton Reserve test well................................................................................................................................. 6 3. South Venice test well...................................................................................................................................... 7 4. Walton test well................................................................................................................................................ 8 5. Hydrogeologic framework in the study area........................................................................................................... 9 6. Map showing location of hydrogeologic sections in the study area ....................................................................... 23 7-16. Hydrogeologic sections in southwest Florida: 7. Section A·A' ..................................................................................................................................................... 24 8. Section B·B' ..................................................................................................................................................... 25 9. Section C-C' ..................................................................................................................................................... 26 10. SectionO.D' ..................................................................................................................................................... 27 11. Section B--E' ..................................................................................................................................................... 28 12. Section F·F' ...................................................................................................................................................... 29 13. SectionG-0' ..................................................................................................................................................... 30 14. Section H·H'..................................................................................................................................................... 31 15. Section I·r........................................................................................................................................................ 32 16. SectionJ.J' ....................................................................................................................................................... 33 17 •22. Maps showing~ 17. Generalized thickness of the surficial aquifer system in southwest Florida.................................................... 34 Contents Ill -- --- -- .. ···--···-·-·-··--···-·-··-··-- ---------::--------c-::-:-::-::-::--:c:-----~---- ' Cylene McPeeks : .. ~~~~-~ological Survey Rpt96-4063.tif Page 41 18. Generalized altitude of the base of the intermediate aquifer system in southwest Florida. ............................ 35 19. Generalized thickness and extent of permeable zone 1 of the intermediate aquifer system in southwest Florida. ........................................................................................................................................... 36 ·( 20. Generalized thickness of penneable zone 2 of the intermediate aquifer system in southwest Florida .......... 37 21. Generalized thickness of permeable zone 3 of the intermediate aquifer system in southwest Florida .......... 38 22. Generalized thickness and extent of the Venice Clay in southwest Florida ................................................... 39 23. Major pumping centers in southwest Sarasota County ......................................................................................... .. 40 24. Surficial and intermediate aquifer system ground-water quality monitor wells in southwest Sarasota County ...................................................................................................................................................