The Determination of Minimum Flows for Sulphur Springs, Tampa

DRAFT
TABLE OF CONTENTS
List of Tables ………………………………………………………………………………iv
List of Figures ……………………………………………………………………………...v
Acronyms and Definitions………………………………………………………………..xi
Executive Summary ……………………………………………………………………..xiii
Acknowledgments………………………………………………………………………...xvi
Chapter 1 - Purpose and Background of Minimum Flows and Levels
1.1 Overview ........................................................................................... 1-1
1.2 Legislative Directives......................................................................... 1-1
1.3 Application to MFLS for Sulphur Springs........................................... 1-3
1.4 Content of Remaining Chapters ........................................................ 1-5
Chapter 2 - Physical and Hydrologic Characteristics of Sulphur Springs
2.1 Introduction........................................................................................ 2-1
2.2 Current physical setting of the spring pool and run............................ 2-3
2.3 Water Supply Use of Sulphur Springs ............................................... 2-8
2.3.1 Recent improvements to the diversion facilities at Sulphur
Springs ............................................................................................ 2-11
2.4 Hydrogeologic and Flow characteristics of Sulphur Springs............ 2-14
2.4.1 Geologic Setting .............................................................................. 2-14
2.4.2 Springflow characteristics................................................................ 2-15
2.5 Water Quality of Sulphur Springs .................................................... 2-19
2.5.1 Data sources ................................................................................... 2-19
2.5.2 Trends in specific conductance ....................................................... 2-21
2.5.2.1 Effects of gate operations and withdrawals on specific
conductance .................................................................................... 2-24
2.5.2.2 Effects of recent smaller withdrawal rates ....................................... 2-30
2.5.3 Concentrations and trends of other constituents ............................. 2-32
Chapter 3 – Ecological Resources of Sulphur Springs and the Lower
Hillsborough River
3.1 Introduction........................................................................................ 3-1
3.2 Salinity and water level records in the spring and river system ......... 3-1
3.3 Tidal water level fluctuations in the spring run................................... 3-2
3.4 Salinity in the spring run and response to withdrawals from the
spring pool......................................................................................... 3-5
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