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

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100 90 % D o m i n a n c e 80 70 60 50 40 30 20 10 TREES WETLAND PLANTS EXPOSED ROOTS SNAG BOTTOM 0 64 Alderman Ford Park 60 51 49 Sites 32 27 21 20 Lithia Springs Figure 5-10. Percent dominance of instream habitats based on linear extent of habitats along eight cross-sections in the Alafia River corridor. 35 Mean Habitat Elevation (ft NGVD) 30 25 20 15 10 5 Trees Wetland Plants Exposed Roots Snag Bottom 0 24 23 22 Alderman's Ford Park 21 20 19 18 17 16 15 SR 640 Bridge Distance From Mouth of River (Miles) 14 13 Lithia Springs Figure 5-11. Mean elevations of instream habitat at eight cross-section sites on the Alafia River. 5-14
5.5.3 Flow Relationships with Woody Instream Habitats Based on the ecological importance of woody habitat, and its potential for use in development of a medium flow standard, inundation patterns were examined for exposed root and snag habitats at eight cross-sections in the Alafia River. Modeled local (cross-section site) flows needed to inundate snag habitats ranged from 5 to 67 cfs (Table 5-2). Corresponding flows at the USGS Lithia gage were also variable, ranging from 5 to 85 cfs, with a mean of 27 cfs. Flows required to inundate exposed root habitats were higher (Table 5-3). Local flow requirements ranged from 89 to 537 cfs. Corresponding flows at the USGS Lithia gage site ranged from 118 to 526 cfs, with a mean of 255 cfs. Table 5-2. Mean elevation, local (cross-section) flows and corresponding flows at the USGS Lithia gage for inundation of snag woody habitats at eight instream habitat crosssections in the Alafia River for the period from 1933 to 2000. Maximum percent-of-flow reductions at the gage site that result in no more than a 15% decreases in the number of days the habitats are also listed. Cross-Section Mean Elevation (ft NGVD) Local Flow (cfs) Corresponding Flow at USGS Lithia Gage (cfs) 64 24.2 19.3 38.7 60 22.6 NA* 0.8 51 20.7 NA* 10.4 49 18.6 67.3 85.1 32 10.6 NA* NA* 27 none none none 21 6.5 22.9 22.9 20 5.8 5.0 5.0 Table 5-3. Mean elevation, local (cross-section) flows and corresponding flows at the USGS Lithia gage for inundation of exposed root woody habitats at eight instream habitat cross-sections in the Alafia River for the period from 1933 to 2000. Maximum percent-offlow reductions at the gage site that result in no more than a 15% decreases in the number of days the habitats are also listed. Cross-Section Mean Elevation (ft NGVD) Local Flow (cfs) Corresponding Flow at USG Lithia Gage (cfs) 64 27.8 232. 297 60 25.8 112.1 136 51 23.4 89.3 118 49 22.6 202.0 243 32 15.2 145.1 163 27 12.3 160.8 183 21 11.5 536.7 526 20 10.4 319.1 375 5-15
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Alafia River Minimum Flows and Leve
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Table of Contents Table of Contents
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4.3.1 HEC-RAS Modeling ............
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Table of Figures Figure 1-1. Buildi
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Figure 2-33. Phosphorus concentrati
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Figure 5-12. Habitat Gain/Loss for
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Table 5-2. Mean elevation, local (c
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flow, with the exception that withd
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Acknowledgement The authors would l
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9) Water quality; and 10) Navigatio
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Water Management District typically
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Peace River at Zolfo Springs, FL. s
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Period of Record Median Daily Flows
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to enhance understanding of histori
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River watershed, to the east by the
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an adjacent area locally known as t
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Water in the surficial aquifer is r
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The Upper Floridan aquifer (UFA) sy
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Figure 2-4. May and September 2001
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head differences indicating breache
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data (multiple regression) analyses
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2.2 Land Use Changes in the Alafia
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Before discussing individual sub-ba
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Table 2-2. Land use and land cover
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Table 2-3. Land use and land cover
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Figure 2-13. 1972 and 1999 Land use
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2.2.4 Lithia Springs Sub-Basin The
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2.3 Hydrology The assessment of min
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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
Page 107 and 108: Table 2-10. Results of Kendall's ta
Page 109 and 110: Chapter 3 Ecological Resources of C
Page 111 and 112: 1) maintenance of minimum water dep
Page 113 and 114: flow regimes and these life history
Page 115 and 116: subsidy of water and nutrients that
Page 117 and 118: Chapter 4 Technical Approach for Es
Page 119 and 120: 4.2.1 HEC-RAS Cross-Sections Cross
Page 121 and 122: PHABSIM analysis required acquisiti
Page 123 and 124: Figure 4-5. Upstream vegetation cro
Page 125 and 126: level, whenever possible. Immature
Page 127 and 128: major parameter altered during the
Page 129 and 130: Alafia River - Cross Section 64 - W
Page 131 and 132: Delphi method lacks the rapid feedb
Page 133 and 134: TOTAL DAYS OF INUNDATION DURING THE
Page 135 and 136: Period of Record Median Daily Flows
Page 137 and 138: Wetted Perimeter - USGS 84.5 - SWFW
Page 139 and 140: Alafia River Station 91.5 Stage in
Page 141 and 142: section sites and corresponding flo
Page 143 and 144: 4.9.1.2 Recreational Use Assessment
Page 145 and 146: Chapter 5 Results and Recommended M
Page 147 and 148: greater than 25 cfs would inundate
Page 149 and 150: For the USGS Lithia gage site, the
Page 151 and 152: 40 35 30 25 20 15 10 T20 T21 T27 T3
Page 153 and 154: Wetted Perimeter (linear feet) 2000
Page 155 and 156: dominant vegetation zones, mucky so
Page 157: 5.5.1 Application of PHABSIM for Bl
Page 161 and 162: River begins on October 28 and ends
Page 163 and 164: Table 5-4. Maximum monthly percent-
Page 165 and 166: 5.6.3 Short-Term Compliance Standar
Page 167 and 168: Table 5-5. Maximum monthly percent-
Page 169 and 170: 5.8 Short-Term Compliance Standard
Page 171 and 172: Table 5-7. Proposed Minimum Flows f
Page 173 and 174: Biological Services Program Report
Page 175 and 176: Jones, G.W., and Upchurch, S.B., 19
Page 177 and 178: SDI Environmental Services, Inc. 20
Page 179 and 180: Upchurch, S.B. and J.R. Littlefield
Page 181 and 182: A Review of “Alafia River Minimum
Page 183 and 184: The draft report for setting MFLs f
Page 185 and 186: methodologies, analyses, and conclu
Page 187 and 188: The SWFWMD has employed a building
Page 189 and 190: MFLs for the Alafia and Myakka rive
Page 191 and 192: RALPH PLOTS AND ANALYSES Recent and
Page 193 and 194: then used to estimate percent of fl
Page 195 and 196: necessary. Such a framework should
Page 197 and 198: to use to meet the criteria of no s
Page 199 and 200: Shaw, D.T., C.N. Dahm, and S.W. Gol
Page 201 and 202: The District has added to Chapter 4
Page 207 and 208: 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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