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

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Julian day 301 (October 28) to Julian day 109 (April 19) of the following calendar year. Using these definitions: Blocks 1, 2, and 3 are 65, 176 and 124 days in length, respectively (Table 2-6). The three flow blocks were utilized for development of minimum flows for the Alafia River and are evident in a hydrograph of median daily flows for the Lithia gage site (Figure 2-16). Lowest flows, which are typically confined to the river channel, occur during Block 1. Highest flows, which are often sufficient for inundating the river floodplain, occur during Block 3, although high flows may also occur during Block 2. Medium flows occur during Block 2. Table 2-5. Beginning Julian days for the Wet and Dry periods (Blocks 1 and 3) and ending date for the Wet period at five different gage stations in the SWFWMD. Begin Dry (Block 1) Begin Wet (Block 3) End Wet (Block 3) Alafia at Lithia 106 175 296 Hillsborough at 112 176 296 Zephyrhills Myakka at Sarasota 115 181 306 Peace at Arcadia 110 174 299 Withlacoochee at Croom 130 208 306 Mean w/o 110 176 300 Withlacoochee Mean with Withlacoochee 114 183 301 Table 2-6. Beginning and ending calendar dates for annual flow Blocks 1, 2, and 3 for the Alafia, Hillsborough, Myakka and Peace Rivers for non-leap years. Calendar dates apply for both non-leap years and leap years. Start Date (Julian Day) End Date (Julian Day) Number of Days Block 1 April 20 (110) June 24 (175) 65 Block 2 October 28 (301) April 19 (109) 176 Block 3 June 25 (176) October 27 (300) 124 2-37
Period of Record Median Daily Flows for Alafia River at Lithia, FL Flow (cfs) 600 500 400 300 200 100 0 B B B L L L O O O B C C C L K K K O 2 1 2 C K 3 0 50 100 150 200 250 300 350 Day of Year (Julian Date) Figure 2-16. 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. 2-38
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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
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
Page 57 and 58: Period of Record Median Daily Flows
Page 59 and 60: occurred during the spring were sim
Page 61 and 62: Conversely, since most of the Unite
Page 63: extending from 1940 to 1969 can be
Page 67 and 68: third highest flow occurred early i
Page 69 and 70: Flow (cfs) Alafia River at Lithia,
Page 71 and 72: 100 North Prong Alafia River at Key
Page 73 and 74: Flow (cfs) South Prong Alafia River
Page 75 and 76: Alafia River at Lithia - Water Qual
Page 77 and 78: South Prong Watershed Above USGS Ga
Page 79 and 80: Comparisons of land use changes and
Page 81 and 82: Comparison of Median Daily Flows fo
Page 83 and 84: Comparisons of Annual 25% Exceedanc
Page 85 and 86: Figure 2-25. Lithia Springs Major b
Page 87 and 88: 2.3.4.3.2 Discharge from Lithia Spr
Page 89 and 90: Relationship Between Lithia Springs
Page 91 and 92: Buckhorn Spring Main Discharge (Wit
Page 93 and 94: versus flow. The third plot typical
Page 95 and 96: Alafia River at Lithia, FL Phosphor
Page 97 and 98: While elevated phosphorus concentra
Page 99 and 100: Peace River at Arcadia, FL 20 Phosp
Page 101 and 102: Alafia River at Lithia, FL Nitrate/
Page 103 and 104: 2.4.2 Potassium and Trend Analysis
Page 105 and 106: 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
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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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Period of Record Median Daily Flows
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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
Page 173 and 174:
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
Page 181 and 182:
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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