The Determination of Minimum Flows for Sulphur Springs, Tampa

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DRAFT February 2002 when there was no flow from the dam. However, water temperatures at all the stations were similar in December 2002, when flow from the dam averaged 210 cfs. As with the EPCHC sites, water temperatures in the river during summer months are highest near at the mouth of the river at Platt Street. Time series plots of average daily values for surface and bottom temperatures for the period 1990 - 2002 at the four USGS recorders are shown in Figure 3-31. The period of record is longest at the Rowlett and Nebraska Avenue stations, as data collection at the Platt and Hanna's stations began in the first part of 2001. Data were not available after September 2002 for Rowlett at the time of this report. Water temperatures went below 20 o C at all recorders in the river every year. With the exception of the Nebraska Avenue site, water temperature dipped below 15 o C every year. The winter of 2002-2003 appeared to be the coldest, as water temperatures at Platt and Hanna were below 15 o C for almost two months. Winter water temperatures were somewhat warmer at Nebraska Ave., as temperatures dipped to 15 o C only twice in the four years of record. 3.11.3 Vertical and diurnal variations in river water temperatures Differences between surface and bottom temperatures for these same four recorders are plotted in Figures 3-32. The largest differences between surface and bottom temperatures appear to be near the spring at I-275, followed by Platt. At both stations, there are fluctuations when the surface is either warmer or cooler than the bottom, likely reflecting the effect of short-term meteorological conditions on surface waters. Surface to bottom differences were generally smaller at the Hanna's and Rowlett recorders, which are closer to the dam. In addition to the spatial, seasonal, and vertical temperature variations, there are significant thermal differences that occur at shorter time scales. Figure 3-33 illustrates diurnal variations in water temperature, expressed as daily ranges in surface and bottom temperatures. Bottom temperatures are generally more stable than surface temperatures, where daily variations in air temperatures have a greater effect. Diurnal swings in surface water temperatures were often in the range of 2-3 o C and reached as high as 5-7 o C at I-275 on some days. Diurnal temperature variations appeared to be somewhat greater in the upper river, compared to the mouth of the river at Platt St. 3.11.4 Temperature variability and relation to biological use The results presented above show there are both horizontal and vertical gradients in water temperature in the lower Hillsborough River and these gradients change temporally on short-term and seasonal time scales. Highly motile organisms such as fishes and manatees can migrate in the river to seek suitable temperature regimes in times of temperature extremes. Due to its discharge of relatively stable water throughout the year, Sulphur Springs exerts a clear effect on the thermal characteristics of the lower river, particularly in its upper reaches and during times of no flow from the dam. 3 - 60
DRAFT Figure 3-31 1999 2000 2001 2002 2003 2004 1999 2000 2001 2002 2003 2004 35 35 35 35 Platt Hillsulph 30 30 30 30 Temperature ( o C) 25 20 15 25 20 15 Temperature ( o C) 25 20 15 25 20 15 10 10 10 10 Minimum Surface Temperature (C) Minimum Surface Temperature (C) 5 Minimum Bottom Temperature (C) SBTmp_PlattMin.grf 5 5 Minimum Bottom Temperature(C) SBTmp_HillsulphMin.grf 5 1999 2000 2001 2002 2003 2004 Year 1999 2000 2001 2002 2003 2004 1999 2000 2001 2002 2003 2004 Year 1999 2000 2001 2002 2003 2004 35 35 35 35 Hanna Rowlette 30 30 30 30 Temperature ( o C) 25 20 15 25 20 15 Temperature ( o C) 25 20 15 25 20 15 Minimum Surface Temperature(C) 10 Minimum Bottom Temperature(C) 10 10 10 5 SBTmp_HannaMin.grf 1999 2000 2001 2002 2003 2004 Year 5 5 SBTmp_RowlettMin.grf Minimum Surface Temperature(C) Minimum Bottom Temperature(C) 1999 2000 2001 2002 2003 2004 Year Figure 3-31. Time series of surface and bottom water temperatures at four data recorders in the Lower Hillsborough River operated by the USGS. 5 3 - 61
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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
Page 75 and 76: DRAFT pumping events resulted in sa
Page 77 and 78: DRAFT As discussed in Section 2.5.3
Page 79 and 80: DRAFT tolerate and are frequently f
Page 81 and 82: DRAFT Appendix B are color coded to
Page 83 and 84: DRAFT habitat in the lower river pr
Page 85 and 86: DRAFT The FWC using a modified stra
Page 87 and 88: DRAFT increased with a return to no
Page 89 and 90: DRAFT 2000. The results from three
Page 91 and 92: DRAFT species (10 to 13) were colle
Page 93 and 94: DRAFT 1940 1950 1960 1970 1980 1990
Page 95 and 96: DRAFT . 1000.00 100.00 10.00 1.00 0
Page 97 and 98: DRAFT 3.9.2 The effects of flows fr
Page 99 and 100: DRAFT Data from the Tampa Bay Water
Page 101 and 102: DRAFT EPCHC Period of Record Data L
Page 103 and 104: DRAFT 35 30 1996 1997 1998 1999 200
Page 105 and 106: 7 DRAFT Elevation (m) 1 0 -1 -2 -3
Page 107 and 108: 8 24 25 29 DRAFT Figure 3-20, 3-21
Page 109 and 110: DRAFT Figure 3-22 HBMP & EPCHC 2000
Page 111 and 112: DRAFT of the river between the dam
Page 113 and 114: DRAFT 10 11 12 13 14 15 16 17 10 11
Page 115 and 116: DRAFT The HBMP project (PBSJ 2003)
Page 117 and 118: DRAFT xanthurus) red drum (Sciaenop
Page 119 and 120: DRAFT as manatees seek fresh water
Page 121 and 122: 1999 2000 2001 2002 DRAFT 35 TmpSS_
Page 123 and 124: DRAFT Platt Street 1974-2002 Columb
Page 125: DRAFT Median and minimum water temp
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
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DRAFT 01/90 01/93 01/96 01/99 01/02
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DRAFT the intent of that condition
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DRAFT included inflows to the model
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DRAFT Flows for Sulphur Springs wer
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DRAFT ∆T represents the differenc
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DRAFT Figure 25 Temp (C) 22 Histori
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DRAFT Figure 26 Temp (C) 24 22 Hist
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DRAFT Similar to the coldest period
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DRAFT 5.7. Consideration of future
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DRAFT Culter, J. 1986. Benthic Inve
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DRAFT Shafland, P. L. and K. J. Foo
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APPENDIX A (from Chapter 2) Time se
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Sulphur Springs Water Quality 1991-
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Appendix B. Presence of macroinvert
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Appendix C. Percent composition of
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Appendix C. Percent composition of
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APPENDIX D (from Chapter 3) Percent
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APPENDIX D. Percent composition of
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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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