The Determination of Minimum Flows for Sulphur Springs, Tampa

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DRAFT below 19 feet NGVD of 1929. This minimum flow can be reduced to 10 cfs at low tide stages in the lower river if it does not result in salinity incursions into the upper spring run. A minimum flow of 18 cfs will be maintained if the temperature of either surface or bottom waters in the Lower Hillsborough River near the mouth of the spring are below 15 degrees Celsius. The adoption of a minimum flows for Sulphur Springs will require more intensive management flows from the spring pool. Water level and salinity recorders will be maintained to allow real-time management of springflow based on tides and salinity levels in the spring pool, spring run, and lower river. The adequacy of the minimum flows for the Sulphur Springs will be checked by ongoing data collection programs in the spring run and lower river. The minimum flows for Sulphur Springs will also be considered as they factor into the re-evaluation of minimum flows for the Lower Hillsborough River which is scheduled for 2005. This report, and the data relied upon for its analysis, are based on the existing configuration of the structure that separates the upper and lower spring run. However, there is a possibility that modification of this structure could provide additional protection from salinity incursions into the upper spring run, while providing for low salinity habitats and a thermal refuge in the Lower Hillsborough River. Further analysis of potential modifications to the existing structure on Sulphur Springs Run may provide an alternative to the minimum flows recommended in this report. xv
Page 1 and 2: The Determination of Minimum Flows
Page 4 and 5: DRAFT TABLE OF CONTENTS List of Tab
Page 6: 4.5 Goal 1 - Minimize the incursion
Page 10 and 11: DRAFT LIST OF FIGURES Chapter 2 - P
Page 12 and 13: Fig. 3-13 Fig. 3-14 Fig. 3-15 Fig.
Page 14 and 15: Fig. 5-7 Fig. 5-8 Fig. 5-9 Fig. 5-1
Page 16 and 17: Acronyms and Definitions DRAFT AMO
Page 18 and 19: DRAFT Executive Summary The Southwe
Page 22: DRAFT Acknowledgments This report i
Page 25 and 26: 1 - 2 DRAFT at which further withdr
Page 27 and 28: 1 - 4 DRAFT Lastly, the effects of
Page 30 and 31: DRAFT CHAPTER 2 PHYSICAL AND HYDROL
Page 32 and 33: DRAFT Problems with high coliform b
Page 34 and 35: DRAFT Figure 2-5. Diagram of Sulphu
Page 36 and 37: -4 -3 -2 DRAFT A bathymetric map of
Page 38 and 39: DRAFT Diversions from Sulphur Sprin
Page 40 and 41: DRAFT For the evaluation of minimum
Page 42 and 43: DRAFT The minimum flow rule for the
Page 44 and 45: DRAFT Formation and act as a hydrol
Page 46 and 47: DRAFT apparently declined over time
Page 48 and 49: DRAFT There is evidence that flows
Page 50 and 51: DRAFT Since April 1999, the USGS ha
Page 52 and 53: DRAFT Figure 2-21. Temporal trend o
Page 56 and 57: DRAFT 7000 8 6000 7 Specific Conduc
Page 58 and 59: DRAFT 8 A Gage Height (ft) Daily Pu
Page 60 and 61: DRAFT While visually compelling, th
Page 62 and 63: DRAFT The experimental withdrawals
Page 64 and 65: DRAFT In the absence of pollution,
Page 66 and 67: DRAFT Table 2-4. Results of Kruskal
Page 68 and 69: DRAFT 3.3 Tidal water level fluctua
Page 70 and 71:
DRAFT Figure 3-3. Stage duration cu
Page 72 and 73:
DRAFT 1999 2000 2001 2002 2003 2004
Page 74 and 75:
DRAFT Table 3-1 Summary statistics
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DRAFT duration of low flows and the
Page 78 and 79:
DRAFT northern shore of the upper s
Page 80 and 81:
DRAFT 3.7.3.3 Results of FWC qualit
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DRAFT waters. Other species that oc
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DRAFT abundance estimates in number
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DRAFT Crustaceans also increased gr
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DRAFT and possibly even high sulfid
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DRAFT Table 3-2. Number of individu
Page 92 and 93:
DRAFT 3.9 Relationships of Sulphur
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DRAFT 400 1940 1950 1960 1970 1980
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DRAFT Figure 3-11. Time series of p
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DRAFT data collection since the spr
Page 100 and 101:
DRAFT Figure 3-13 HBMP & EPCHC 2000
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DRAFT The 15-minute data from the U
Page 104 and 105:
DRAFT Figure 3-16 illustrates salin
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23 24 28 29 DRAFT Figure 3-18, 3-19
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DRAFT presented in this report. Dis
Page 110 and 111:
DRAFT Figure 3-23 EPCHC Period of R
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4 15 DRAFT 10 11 12 13 14 15 16 17
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DRAFT underway to test the effect o
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DRAFT In general, these studies dem
Page 118 and 119:
DRAFT 3.11 Thermal characteristics
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DRAFT 1991 1992 1993 1994 1995 1996
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DRAFT 3.11.2 Thermal characteristic
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DRAFT 35 35 Median Water Temperatur
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DRAFT February 2002 when there was
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DRAFT Figure 3-32 4 3 2001 2002 200
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DRAFT The effects of removing or re
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DRAFT 4.3 Consideration of seasonal
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DRAFT Lastly, the relationship betw
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DRAFT brackish waters often extend
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DRAFT brackish marsh plants such as
Page 141 and 142:
CHAPTER 5 RESULTS OF THE MINIMUM FL
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DRAFT Table 5-1 includes dates and
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DRAFT Figure 5-2. Location of verti
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DRAFT Experiment Number 5 Experimen
Page 149 and 150:
DRAFT The number of days of record
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DRAFT There were some flow rates ab
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DRAFT Table 5-2 Number of days and
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DRAFT the river do not penetrate th
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DRAFT occurring. The data discussed
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DRAFT Maximum Daily Stage Minimum D
Page 161 and 162:
DRAFT greatest (see Section 3.3.7.4
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DRAFT prevent excessive expansions
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DRAFT Table 5-3. Volumes of water <
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DRAFT Scenarios 6 through 8 in Tabl
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10 23 17 24 25 28 29 DRAFT Figure 1
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8 10 22 22 23 25 28 29 DRAFT Figure
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23 24 25 DRAFT Figure 20 - 21 Eleva
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DRAFT The biological data collected
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DRAFT Water levels dropped below 19
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DRAFT 5.5.2 Methods and description
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DRAFT Figure 5-23. Model domain for
Page 183 and 184:
DRAFT requirements of a thermal ref
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DRAFT Figure Temp 24 (C) Sulphur Sp
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DRAFT 5.5.8 Time series of water te
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DRAFT Figure 27 Temp (C) 22 Sulphur
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DRAFT toward the end of the dry sea
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CHAPTER 6 LITERATURE CITED DRAFT Al
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DRAFT Krebs, C. J. 1999. Ecological
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DRAFT Southwest Florida Water Manag
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Sulphur Springs Water Quality 1991-
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Page 204 and 205:
Page 206 and 207:
Page 208 and 209:
Page 211:
APPENDIX B (from Chapter 3) Presenc
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Appendix B. Presence of macroinvert
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Appendix B. Presence of macroinvert
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APPENDIX C (CHAPTER 3) SULPHUR SPRI
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Appendix C. Percent composition of
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Appendix C. Percent composition of
Page 226 and 227:
APPENDIX D. Percent composition of
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Page 230 and 231:
Page 232 and 233:
Appendix E. Abundance of macroinver
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BARE SAND FILAMENTOUS ALGAE COMBINE
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Page 238 and 239:
Page 241 and 242:
APPENDIX F (from Chapter 3) Summary
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APPENDIX G (from Chapter 5) Daily v
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Experiment Number 4 RUN MEAN RUN MI
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Experiment Number 5
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APPENDIX I (from Chapter 5) Daily v
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04AUG2000 7.1 7.5 1.4 2.9 1.5 . 11.
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14MAR2001 12.0 11.0 1.4 9.3 7.9 1.6
Page 262 and 263:
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The Determination of Minimum Flows for Sulphur Springs, Tampa

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