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

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Table 2-1. Land use and land cover percentages in the 53,487-acre (84 square miles) Braden River watershed for three time periods: 1972, 1990 and 1999. Braden River Watershed 1972 1990 1999 1999 % of Total Urban 2649 11311 18060 33.8 Citrus 1562 1039 838 1.6 Other Agriculture 20390 16545 14028 26.2 Uplands 24350 13590 9537 17.8 Wetlands 3757 7440 6615 12.4 Mines 88 1506 1508 2.8 Water 692 2056 2901 5.4 Totals 53487 53487 53487 100.0 Land Use/Land Cover - Braden River Watershed 30000 Area 25000 (acres) 20000 15000 10000 5000 0 Urban Citrus Other Agriculture Uplands Wetlands Mines Water 1972 1990 1999 Figure 2-5. Land use/cover acreage in the Braden River watershed in 1972, 1990 and 1999. 2.3.2 Upper Braden River Sub-Basin The predominant land use in the Upper Braden River sub-basin is agriculture, although the amount of land in this use category has declined between 1972 and 1999 (Table 2-2, Figures 2-6 through 2-8). Clearly, the single greatest increase in land use during this time period was urban, which increased from 546 acres to 10,550 acres by 1999. What appears to be an increase in wetland area is probably largely an artifact attributable to the coarser resolution of the earlier land use map (i.e., 1972); the actual decline in acreage between 1990 and 1999 is believed to be real and amounts to 525 acres. The increase in urbanized area between 1972 and 1999 of slightly greater than 10,000 acres was essentially offset by the total decrease in natural lands (i.e., uplands + wetlands) of over 11,000 acres. Although agriculture remains a significant land use in the upper basin (26% of total area), it should be noted that this land use has declined by slightly over 1,000 acres since 1972. 2-7
Table 2-2. Land use/cover and land cover percentages in the upper Braden River subbasin for three time periods: 1972, 1990 and 1999. Upper Braden River 1972 1990 1999 1999 % of Total Urban 546 4525 10550 26.6 Citrus 353 375 220 0.6 Other Agriculture 13185 14223 12244 30.8 Uplands 22533 12228 8232 20.7 Wetlands 2770 5911 5386 13.6 Mines 49 1403 1410 3.6 Water 281 1052 1675 4.2 Totals 39716 39716 39716 100.0 Land Use/Land Cover - Upper Braden River 25000 Area 20000 (acres) 15000 10000 5000 0 Urban Citrus Other Agriculture Uplands Wetlands Mines Water 1972 1990 1999 Figure 2-6. Land use/cover acreage in the upper Braden River sub-basin in 1972, 1990 and 1999. 2-8
Page 1 and 2: Proposed Minimum Flows and Levels f
Page 3 and 4: Table of Contents TABLE OF CONTENTS
Page 5 and 6: 5.5 PRESCRIBED FLOW REDUCTION FOR B
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: Figure 2-4. 1999 land use/cover map
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
Page 57 and 58: Table 2-8. Summary statistics for B
Page 59 and 60: 3.2 Resources and Area of Concern T
Page 61 and 62: habitat, the greater area of stream
Page 63 and 64: levels such as fish have been shown
Page 65 and 66: Figure 3-1. Example of low flow in
Page 67 and 68: USGS Braden River near Lorraine gag
Page 69 and 70: instream cross-sections were sample
Page 71 and 72: Figure 4-2. Upstream vegetation cro
Page 73 and 74: supports water surface profile calc
Page 75 and 76: The HEC-RAS model was run using 21
Page 77 and 78: Adult Spotted Sunfish Adults - Brad
Page 79 and 80: species of interest. For example cu
Page 81 and 82: 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
Page 167 and 168:
Compliance Standards and Proposed M
Page 169 and 170:
Glossary of Terms 13) When an inter
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