The Determination of Minimum Flows for Sulphur Springs, Tampa

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DRAFT included inflows to the model domain from Sulphur Springs. Like the LAMFE model, these scenarios were run assuming minimal rainfall and stormwater inflow below the dam. Associated with these scenarios were water temperatures and salinity concentrations of the inflow source. In order to allow predictions to be made under varying scenario conditions, the model also allows precipitation and withdrawals from the system to be modeled. Meteorological data (air temperature and wind speed and direction) were input to estimate evaporation. Water surface elevation boundary conditions were also specified at the downstream limit of the model domain. Vertical temperature and constituent concentration profiles at the boundaries were input. Surface heat exchange was also estimated based on the input meteorological data, including air temperature, dew point temperature, wind speed and direction, and cloud cover. Hydraulic parameters input to the model included a horizontal dispersion coefficient for momentum and a horizontal dispersion coefficient for temperature and constituents. These values were set to be constant over time and over the entire spatial domain of the model. Bottom friction coefficient values were also input to the model. 5.5.4 Model Construct The grid system utilized in this study was based on that previously developed for the LAMFE model. The grid system developed for the LAMFE model, as shown in Figure 5- 23, included 32 columns along the river length and 16 vertical layers. Column lengths (distance along the river) varied, from 300 m in the upstream reaches of the river to greater than 800 m at the mouth. We adopted this grid system, and then refined if specifically for this study to provide greater resolution in the vicinity of the Sulphur Springs outfall. Columns 12 at Sulphur Springs and column and 13 (downstream of Sulphur Springs) of the LAMFE model were divided into 16 columns, each 50 m long Figure 5-23). The remainder of the LAMFE grid construct was unchanged. 5.5.5 Model Input Data The thermal model was run under two sets of ambient temperature conditions that corresponded to two different time periods. These temperature conditions were based on threshold water temperature values suggested by staff of the Florida Fish and Wildlife Conservation Commission that are described in Chapter 4. The “coldest period” was defined as that time when water temperatures in the Lower Hillsborough River were the lowest observed during the period of record of monthly observations by the EPCHC since 1974. The “thermal refuge period” was defined as a period when the continuous recorders in the river and spring were operating (since 1999); water temperatures in the river near Sulphur Springs were greater than 20° C; and temperatures in the river upstream and downstream of Sulphur Springs were less than 20° C. Using temperature data from these periods, the effects of various flow scenarios were evaluated by 5 - 40
DRAFT Figure 5-23. Model domain for SWFWMD salinity model and temperature model, with grid cell system for SWFWMD salinity model. assigning different flow values for spring flows discharging to the spring run or diverted to the base of the dam. The data used for the “coldest period” model scenarios were: • Predicted water surface elevations every minute at Hillsborough Bay (the downstream boundary) from the TBONE Tide Predictor web site; • Monthly water temperature and salinity at EPCHC Station 2 near Platt Street (the downstream boundary); • Monthly water surface temperature for Sulphur Springs (tributary) from USGS; and • Monthly water surface temperature for EPCHC Station 105 near Rowlett Park Drive (these data were assigned to represent the inflow temperature from the dam, the upstream boundary). 5 - 41
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The Determination of Minimum Flows
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DRAFT TABLE OF CONTENTS List of Tab
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4.5 Goal 1 - Minimize the incursion
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DRAFT LIST OF FIGURES Chapter 2 - P
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Fig. 3-13 Fig. 3-14 Fig. 3-15 Fig.
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Fig. 5-7 Fig. 5-8 Fig. 5-9 Fig. 5-1
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Acronyms and Definitions DRAFT AMO
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DRAFT Executive Summary The Southwe
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DRAFT below 19 feet NGVD of 1929. T
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CHAPTER 1 PURPOSE AND BACKGROUND OF
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DRAFT water, or aquifer, provided t
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DRAFT one the indicators were the f
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DRAFT The spring and its run lie in
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DRAFT Figure 2-3. Recent photograph
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2 - 6 DRAFT
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DRAFT -5 -4 -3 -2 -1 0 1 2 3 0.4 4
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DRAFT 10.0 Yrly_Pumpage.grf 15 Annu
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DRAFT 1999 2000 2001 2002 2003 35 D
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DRAFT Figure 2-14. Return flow stru
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DRAFT 40 Jan. Feb. Mar. Apr. May Ju
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DRAFT due to withdrawals for public
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DRAFT Figure 2-19 . Temporal trend
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DRAFT Figure 2-20. Temporal trends
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DRAFT In comparison to specific con
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DRAFT average daily withdrawals for
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DRAFT Figure 2-25. Average specific
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DRAFT withdrawal rate of 31 cfs dur
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DRAFT Table 2-2. Sulphur Springs su
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DRAFT These plots indicate that his
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DRAFT CHAPTER 3 ECOLOGICAL RESOURCE
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DRAFT 3 Run_Riv_Stg.grf Water Surfa
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DRAFT 3.4 Salinity in the spring ru
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DRAFT 1999 2000 2001 2002 2003 2004
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DRAFT pumping events resulted in sa
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DRAFT As discussed in Section 2.5.3
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DRAFT tolerate and are frequently f
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DRAFT Appendix B are color coded to
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DRAFT habitat in the lower river pr
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DRAFT The FWC using a modified stra
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DRAFT increased with a return to no
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DRAFT 2000. The results from three
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DRAFT species (10 to 13) were colle
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DRAFT 1940 1950 1960 1970 1980 1990
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DRAFT . 1000.00 100.00 10.00 1.00 0
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DRAFT 3.9.2 The effects of flows fr
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DRAFT Data from the Tampa Bay Water
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DRAFT EPCHC Period of Record Data L
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DRAFT 35 30 1996 1997 1998 1999 200
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7 DRAFT Elevation (m) 1 0 -1 -2 -3
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8 24 25 29 DRAFT Figure 3-20, 3-21
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DRAFT Figure 3-22 HBMP & EPCHC 2000
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DRAFT of the river between the dam
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DRAFT 10 11 12 13 14 15 16 17 10 11
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DRAFT The HBMP project (PBSJ 2003)
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DRAFT xanthurus) red drum (Sciaenop
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DRAFT as manatees seek fresh water
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1999 2000 2001 2002 DRAFT 35 TmpSS_
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DRAFT Platt Street 1974-2002 Columb
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DRAFT Median and minimum water temp
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DRAFT Figure 3-31 1999 2000 2001 20
Page 129 and 130: DRAFT Figure 3-33 2001 2002 2003 20
Page 131 and 132: DRAFT CHAPTER 4 TECHNICAL APPROACH
Page 133 and 134: DRAFT The sum of these consideratio
Page 135 and 136: DRAFT It is the conclusion of this
Page 137 and 138: DRAFT criteria. The
Page 139: DRAFT reach of the river 50 meters
Page 142 and 143: DRAFT of the dam. The experiments w
Page 144 and 145: DRAFT Salinity incursions above the
Page 146 and 147: DRAFT Figure 5-3. A - D. Box and wh
Page 148 and 149: DRAFT The results of the vertical p
Page 150 and 151: DRAFT Sulphur Springs < 33 cfs, Hil
Page 152 and 153: DRAFT Other breakpoints in the data
Page 154 and 155: DRAFT 40 Percent of Observations -
Page 156 and 157: DRAFT It is possible that infrequen
Page 158 and 159: DRAFT The effects of tide stage on
Page 160 and 161: DRAFT medians rise to near -0.2 fee
Page 162 and 163: DRAFT Sulphur Springs < 33 cfs, Hil
Page 164 and 165: DRAFT Sulphur Springs on salinity d
Page 166 and 167: 7 29 DRAFT Elevation (m) 0/0cfs 1 0
Page 168 and 169: 23 24 24 25 25 29 DRAFT Figures 14,
Page 170 and 171: DRAFT Viewed strictly from the infl
Page 172 and 173: DRAFT water removed would fluctuate
Page 174 and 175: DRAFT euryhaline, there were also m
Page 176 and 177: DRAFT 01/90 01/93 01/96 01/99 01/02
Page 178 and 179: DRAFT the intent of that condition
Page 182 and 183: DRAFT Flows for Sulphur Springs wer
Page 184 and 185: DRAFT ∆T represents the differenc
Page 186 and 187: DRAFT Figure 25 Temp (C) 22 Histori
Page 188 and 189: DRAFT Figure 26 Temp (C) 24 22 Hist
Page 190 and 191: DRAFT Similar to the coldest period
Page 192 and 193: DRAFT 5.7. Consideration of future
Page 194 and 195: DRAFT Culter, J. 1986. Benthic Inve
Page 196 and 197: DRAFT Shafland, P. L. and K. J. Foo
Page 199 and 200: APPENDIX A (from Chapter 2) Time se
Page 201 and 202: Sulphur Springs Water Quality 1991-
Page 209: Sulphur Springs Water Quality 1991-
Page 213 and 214: Appendix B. Presence of macroinvert
Page 215 and 216: Appendix B. Presence of macroinvert
Page 217: Appendix B. Presence of macroinvert
Page 220 and 221: Appendix C. Percent composition of
Page 222 and 223: Appendix C. Percent composition of
Page 225 and 226: APPENDIX D (from Chapter 3) Percent
Page 227 and 228: APPENDIX D. Percent composition of
Page 229 and 230: APPENDIX D. Percent composition of
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APPENDIX E (from Chapter 3) Abundan
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BARE SAND FILAMENTOUS ALGAE COMBINE
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APPENDIX F - HILLSBOROUGH RIVER TEM
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Appendix G Daily values for mean, m
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APPENDIX H (from Chapter 5) Time se
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Experiment Number 6
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Appendix I Daily values for minimum
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28FEB2000 9.8 0.0 1.9 9.7 7.8 . 18.
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12FEB2001 14.0 3.5 1.7 4.6 2.9 1.1
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