Chapter 1 Minimum Flows and Levels - Southwest Florida Water ...

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3.3 RESOURCE MANAGEMENT GOALS AND KEY HABITAT INDICATORS...................3-2 3.3.1 Fish Passage and Recreational Use..................................................3-3 3.3.2 Wetted Perimeter Inflection Point ......................................................3-3 3.3.3 In-Channel Habitats for Fish and Macroinvertebrates........................3-4 3.3.4 Woody Habitats .................................................................................3-5 3.3.5 Hydrologic Connections Between the River Channel and Floodplain 3-6 CHAPTER 4 TECHNICAL APPROACH FOR ESTABLISHING MINIMUM FLOWS AND LEVELS FOR THE UPPER BRADEN RIVER......................................................................................................... 4-1 4.1 OVERVIEW..................................................................................................4-1 4.2 TRANSECT LOCATIONS AND FIELD SAMPLING OF INSTREAM AND FLOODPLAIN HABITATS.........................................................................................................4-1 4.2.1 HEC-RAS Cross-Sections .................................................................4-2 4.2.2 PHABSIM Cross-Sections .................................................................4-3 4.2.3 Instream Habitat Cross-Sections .......................................................4-3 4.2.4 Floodplain Vegetation/Soils Cross Sections ......................................4-4 4.3 MODELING APPROACHES.............................................................................4-7 4.3.1 HEC-RAS Modeling ...........................................................................4-7 4.3.2 Physical Habitat Simulation (PHABSIM) Modeling ..........................4-10 4.3.3 Long-term Inundation Analyses .......................................................4-14 4.4 SEASONAL FLOW AND DEVELOPMENT OF BLOCKS 1, 2, AND 3 ......................4-16 4.5 LOW-FLOW THRESHOLD ............................................................................4-17 4.5.1 Wetted Perimeter.............................................................................4-17 4.5.2 Fish Passage ...................................................................................4-18 4.6 PRESCRIBED FLOW REDUCTION FOR BLOCK 1.............................................4-19 4.6.1 PHABSIM – Application for Block 1 .................................................4-19 4.7 PRESCRIBED FLOW REDUCTION FOR BLOCK 2.............................................4-19 4.7.1 PHABSIM – Application for Block 2 .................................................4-20 4.7.2 Snag and Exposed Root Habitat Analyses ......................................4-20 4.8 PRESCRIBED FLOW REDUCTION FOR BLOCK 3.............................................4-21 4.8.1 Floodplain Connection Analyses – Application for Block 3 ..............4-21 CHAPTER 5 RESULTS AND RECOMMENDED MINIMUM FLOWS ...................................................... 5-1 5.1 OVERVIEW..................................................................................................5-1 5.2 LOW-FLOW THRESHOLD ..............................................................................5-1 5.2.1 Fish Passage Criteria.........................................................................5-1 5.2.2 Wetted Perimeter Criteria ..................................................................5-2 5.2.3 Low-Flow Threshold ..........................................................................5-3 5.3 PRESCRIBED FLOW REDUCTION FOR BLOCK 1...............................................5-4 5.3.1 PHABSIM Results for Block 1............................................................5-4 5.3.2 Short-Term Compliance Standards for Block 1..................................5-6 5.4 PRESCRIBED FLOW REDUCTIONS FOR BLOCK 3.............................................5-6 5.4.1 Inundation of Floodplain Features .....................................................5-6 5.4.2 Inundation of Floodplain Vegetation Classes and Soils .....................5-9 5.4.3 Percent-of-Flow Reductions for Floodplain Features, Vegetation Classes and Soils .....................................................................................5-15 5.4.4 Short-Term Compliance Standards for Block 3................................5-17 ii
5.5 PRESCRIBED FLOW REDUCTION FOR BLOCK 2.............................................5-18 5.5.1 PHABSIM Results for Block 2..........................................................5-18 5.5.2 Instream Habitats.............................................................................5-20 5.5.3 Flow Relationships with Woody Instream Habitats ..........................5-22 5.5.4 Selection of the Prescribed Flow Reductions for Block 2.................5-24 5.5.5 Short-Term Compliance Standards for Block 2................................5-24 5.6 COMPLIANCE STANDARDS AND PROPOSED MINIMUM FLOWS FOR THE BRADEN RIVER NEAR LORRAINE....................................................................................5-25 CHAPTER 6 LITERATURE CITED........................................................................................................... 6-1 CHAPTER 7 GLOSSARY OF TERMS ..................................................................................................... 7-1 CHAPTER 8 APPENDIX A ....................................................................................................................... 8-1 CHAPTER 9 APPENDIX B – STAFF RESPONSE TO THE PEER REVIEW REPORT.......................... 9-1 iii
Page 1 and 2: Proposed Minimum Flows and Levels f
Page 3: Table of Contents TABLE OF CONTENTS
Page 7 and 8: Figure 2-19. Potassium concentratio
Page 9 and 10: Figure 5-13. Median daily flow at t
Page 11 and 12: mean feature elevations are listed
Page 13 and 14: For the high flow season of the yea
Page 15 and 16: Acknowledgements The authors would
Page 17 and 18: fluctuations in water flows or leve
Page 19 and 20: Common to this list and the flow re
Page 21 and 22: Fundamental to the approach used fo
Page 23 and 24: 300 250 Block 1 Block 3 Block 2 Flo
Page 25 and 26: are outlined in Chapter 4. In Chapt
Page 27 and 28: as the freshwater segment upstream
Page 29 and 30: attributed to analytic precision di
Page 31 and 32: Figure 2-4. 1999 land use/cover map
Page 33 and 34: Table 2-2. Land use/cover and land
Page 35 and 36: Figure 2-8. 1999 Land use/cover map
Page 37 and 38: Figure 2-10. 1972 Land use/cover ma
Page 39 and 40: Smith and Stopp (1978) note that "i
Page 41 and 42: 2.4.2.1 Multidecadal Periods of Hig
Page 43 and 44: 2.4.3.2 Step Trend in River Flows K
Page 45 and 46: Table 2-4. Results of Kendall's tau
Page 47 and 48: 2.4.4 Benchmark Periods Climate-bas
Page 49 and 50: Oscillation were examined. On a sea
Page 51 and 52: Water Chemistry 2.4.6 Water Quality
Page 53 and 54: Braden River near Lorraine, FL 0.6
Page 55 and 56:
Peace River at Arcadia, FL 10 Potas
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Table 2-8. Summary statistics for B
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3.2 Resources and Area of Concern T
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habitat, the greater area of stream
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levels such as fish have been shown
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Figure 3-1. Example of low flow in
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USGS Braden River near Lorraine gag
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instream cross-sections were sample
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Figure 4-2. Upstream vegetation cro
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supports water surface profile calc
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The HEC-RAS model was run using 21
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Adult Spotted Sunfish Adults - Brad
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species of interest. For example cu
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4.4 Seasonal Flow and Development o
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Wetted Perimeter - Sta. 44.9 25 20
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factors, the most conservative of w
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Chapter 5 Results and Recommended M
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Wetted Perimeter Requirements Flow
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40 35 30 25 20 15 10 5 0 May June M
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Floodplain profiles and vegetation
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mean elevation of the Oak/popash ve
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Table 5-3. Mean (±SD) flows at the
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Elevaton (NGVD) 27.0 22.0 17.0 12.0
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Table 5-7. Median elevations, in fe
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80 70 60 Flow reduction (%) 50 40 3
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Table 5-8. Recommended percent flow
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100 90 80 % DOMINANCE 70 60 50 40 3
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Table 5-9. Mean elevation of instre
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The second standard was developed t
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Table 5-10. Proposed Minimum Flows
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Division Information and Technology
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Hupalo, R., C. Neubauer, L. Keenan,
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communities in the corridors of the
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Wharton, C.H., W.M. Kitchens, E.C.
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Confined Aquifer - A term used to d
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Instream Habitats - A specific type
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Riffle - A relatively shallow reach
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Chapter 8 Appendix A A Review of
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steps to reduce the uncertainty and
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2007). In addition, the approach us
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with limited biological knowledge o
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the other factors listed above or w
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have now been developed and adopted
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An example of the primary output fr
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prevent negative effects associated
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methods, such as LiDAR, to improve
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habitat reduction criterion and the
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Summary, Special Publication SJ2002
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Errata / comments by page number in
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4-20 Section 4.7.1, 1 st paragraph,
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Chapter 9 Appendix B - Staff Respon
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2) The panel notes that the period
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4) One aspect of Chapter 2 should b
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Preventing Significant Harm - 15% C
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they aren't getting enough particul
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Habitat Criteria and Characterizati
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Compliance Standards and Proposed M
Page 169 and 170:
Glossary of Terms 13) When an inter
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