Alafia River Minimum Flows and Levels - Southwest Florida Water ...

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5.7 PRESCRIBED FLOW REDUCTION AND SHORT-TERM COMPLIANCE STANDARD FOR BUCKHORN SPRINGS MAIN ...............................................................................5-21 5.7.1 Prescribed Flow Reduction for Buckhorn Springs Main - PHABSIM Results.....................................................................................5-21 5.8 SHORT-TERM COMPLIANCE STANDARD FOR BUCKHORN SPRINGS MAIN.........5-25 5.9 COMPLIANCE STANDARDS AND PROPOSED MINIMUM FLOWS FOR THE FRESHWATER SEGMENT OF THE ALAFIA RIVER...................................................5-25 Literature Cited ...............................................................................................................I APPENDIX A – Peer Review...........................................................................................I APPENDIX B - Staff Response to Peer Review ............................................................i APPENDIX C – Letter from Hillsborough County Environmental Protection Commission ....................................................................................................................i APPENDIX D – Districts response to the Hillsborough County Environmental Protection Commission letter presented in Appendix C.............................................i vi
Table of Figures Figure 1-1. Building blocks developed for a building block approach to the development of minimum flows. Blocks corresponding to low (Block 1), medium (Block 2) and high (Block 3) flows are shown along with period of record median daily flows for the Alafia River at Lithia gage. ......................1-8 Figure 2-1. Map of Alafia River watershed showing USGS gage site locations and locations of Lithia and Buckhorn Springs.....................................................2-2 Figure 2-2. Average total monthly rainfall at Plant City, FL gage for period of record 1901 to 2000.....................................................................................2-3 Figure 2-3. Conceptual hydrogeologic cross-section of the Alafia River/Lithia Springs Area. (modified from SDI (2002))...................................................2-7 Figure 2-4. May and September 2001 observed water levels and USGS potentiometric surface estimates (feet NGVD) in the Upper Floridan aquifer in the vicinity of the Alafia River.....................................................................2-10 Figure 2-5. May 2001 observed water levels (feet NGVD) and depth to water table (in feet below land surface) in the surficial aquifer in the vicinity of the Alafia River. ...............................................................................................2-11 Figure 2-6. Average observed head difference between the surficial aquifer and the Upper Floridan aquifer water levels (feet) in the vicinity of the Alafia River, based on period-of-record data..................................................................2-12 Figure 2-7. Coefficent of determination (r 2 ) values between nearby well water levels (in feet above NGVD) and discharge at Lithia Springs. ...................2-14 Figure 2-8. Coefficient of determination (r 2 ) values between nearby well water levels (ft NGVD) and discharge at Buckhorn Springs. ...............................2-15 Figure 2-9. 1972 and 1999 Land use/cover maps of the Alafia River watershed, Florida........................................................................................................2-19 Figure 2-10. Comparison of land use and land cover changes in the Alafia River watershed. .................................................................................................2-20 Figure 2-11. 1972 and 1999 Land use / cover maps of the South Prong sub-basin of the Alafia River watershed, Florida. .......................................................2-21 Figure 2-12. Comparison of land use and land cover changes in the South Prong sub-basin of the Alafia River watershed. ...................................................2-22 Figure 2-13. 1972 and 1999 Land use / cover maps of the North Prong sub-basin of the Alafia River watershed, Florida. .......................................................2-24 Figure 2-14. Comparison of land use and land cover changes in the North Prong sub-basin of the Alafia River watershed. ...................................................2-25 Figure 2-15. Examples of three river flow patterns: the Southern River Pattern (upper panel), the Northern River Pattern (center panel) and Bimodal River Pattern (bottom panel). ..............................................................................2-30 Figure 2-16. Building blocks developed for a building block approach to the development of minimum flows. Blocks corresponding to low (Block 1), vii
Page 1 and 2: Alafia River Minimum Flows and Leve
Page 3 and 4: Table of Contents Table of Contents
Page 5: 4.3.1 HEC-RAS Modeling ............
Page 9 and 10: Figure 2-33. Phosphorus concentrati
Page 11 and 12: Figure 5-12. Habitat Gain/Loss for
Page 13 and 14: Table 5-2. Mean elevation, local (c
Page 15 and 16: flow, with the exception that withd
Page 17 and 18: Acknowledgement The authors would l
Page 19 and 20: 9) Water quality; and 10) Navigatio
Page 21 and 22: Water Management District typically
Page 23 and 24: Peace River at Zolfo Springs, FL. s
Page 25 and 26: Period of Record Median Daily Flows
Page 27 and 28: to enhance understanding of histori
Page 29 and 30: River watershed, to the east by the
Page 31 and 32: an adjacent area locally known as t
Page 33 and 34: Water in the surficial aquifer is r
Page 35 and 36: The Upper Floridan aquifer (UFA) sy
Page 37 and 38: Figure 2-4. May and September 2001
Page 39 and 40: head differences indicating breache
Page 41 and 42: data (multiple regression) analyses
Page 43 and 44: 2.2 Land Use Changes in the Alafia
Page 45 and 46: Before discussing individual sub-ba
Page 47 and 48: Table 2-2. Land use and land cover
Page 49 and 50: Table 2-3. Land use and land cover
Page 51 and 52: Figure 2-13. 1972 and 1999 Land use
Page 53 and 54: 2.2.4 Lithia Springs Sub-Basin The
Page 55 and 56: 2.3 Hydrology The assessment of min
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Period of Record Median Daily Flows
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occurred during the spring were sim
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Conversely, since most of the Unite
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extending from 1940 to 1969 can be
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third highest flow occurred early i
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Flow (cfs) Alafia River at Lithia,
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100 North Prong Alafia River at Key
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Flow (cfs) South Prong Alafia River
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Alafia River at Lithia - Water Qual
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South Prong Watershed Above USGS Ga
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Comparisons of land use changes and
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Comparison of Median Daily Flows fo
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Comparisons of Annual 25% Exceedanc
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Figure 2-25. Lithia Springs Major b
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2.3.4.3.2 Discharge from Lithia Spr
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Relationship Between Lithia Springs
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Buckhorn Spring Main Discharge (Wit
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versus flow. The third plot typical
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Alafia River at Lithia, FL Phosphor
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While elevated phosphorus concentra
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Peace River at Arcadia, FL 20 Phosp
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Alafia River at Lithia, FL Nitrate/
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2.4.2 Potassium and Trend Analysis
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Alafia River at Lithia, FL 14 Potas
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Table 2-10. Results of Kendall's ta
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Chapter 3 Ecological Resources of C
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1) maintenance of minimum water dep
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flow regimes and these life history
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subsidy of water and nutrients that
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Chapter 4 Technical Approach for Es
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4.2.1 HEC-RAS Cross-Sections Cross
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PHABSIM analysis required acquisiti
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Figure 4-5. Upstream vegetation cro
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level, whenever possible. Immature
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major parameter altered during the
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Alafia River - Cross Section 64 - W
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Delphi method lacks the rapid feedb
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TOTAL DAYS OF INUNDATION DURING THE
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Wetted Perimeter - USGS 84.5 - SWFW
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Alafia River Station 91.5 Stage in
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section sites and corresponding flo
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4.9.1.2 Recreational Use Assessment
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Chapter 5 Results and Recommended M
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greater than 25 cfs would inundate
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For the USGS Lithia gage site, the
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40 35 30 25 20 15 10 T20 T21 T27 T3
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Wetted Perimeter (linear feet) 2000
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dominant vegetation zones, mucky so
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5.5.1 Application of PHABSIM for Bl
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5.5.3 Flow Relationships with Woody
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River begins on October 28 and ends
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Table 5-4. Maximum monthly percent-
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5.6.3 Short-Term Compliance Standar
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Table 5-5. Maximum monthly percent-
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5.8 Short-Term Compliance Standard
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Table 5-7. Proposed Minimum Flows f
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Biological Services Program Report
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Jones, G.W., and Upchurch, S.B., 19
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SDI Environmental Services, Inc. 20
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Upchurch, S.B. and J.R. Littlefield
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A Review of “Alafia River Minimum
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The draft report for setting MFLs f
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methodologies, analyses, and conclu
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The SWFWMD has employed a building
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MFLs for the Alafia and Myakka rive
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RALPH PLOTS AND ANALYSES Recent and
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then used to estimate percent of fl
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necessary. Such a framework should
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to use to meet the criteria of no s
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Shaw, D.T., C.N. Dahm, and S.W. Gol
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The District has added to Chapter 4
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Attachment A June 15 th , 2005 Mrs.
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The Kelly (2004) report includes a
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Figure 1. Box-and-whisker plots of
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As shown in Table 1, a nonparametri
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“augmentation” - be performed a
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Estuary Program 'Restoring the Bala
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APPENDIX D - District's response to
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educed by no more than 8 percent on
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sites with comparable temporal reco
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gradually removed (this appears as
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1) The DISTRICT acknowledges the ma
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Mark Hammond, Director, Resource Ma
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Table 1. Mann-Whitney Statistical A
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Comparison of July Rainfall Totals
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