Weeki Wachee River System Recommended Minimum Flows and ...

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86 = 186 cfs, SWFWMD 1994-96 = 167 cfs, and SWFWMD 2002 – 05 = 192 cfs. In general there are fewer observations of higher salinity (18 and 20 ppt) and their isohalines and tend to group further inshore than expected. Figure 4-9 Isohaline Locations for Various Monitoring Programs (1984-2005) (Line connects median of isohaline location by program) The results from all monitoring programs were pooled and multivariate regressions with Salinity Isohaline (ppt) 22 20 18 16 14 12 10 8 6 4 2 Iso_Eval_plot.syc 0 -4 -3 -2 -1 0 1 2 3 4 River Kilometer from Mouth Data Sources Mote 1984-85 (P 50 = 214 cfs) SWFWMD 2002-05 (P 50 = 194 cfs) SWFMWD 1985-86 (P 50 = 186 cfs) SWFWMD 1994-96 (P 50 = 167 cfs) river kilometer as the dependent variable were evaluated for each of the isohalines. Subset evaluations were varied by surface and bottom waters and by tide (flooding, ebbing and mixed). Candidate independent variable terms were tide height, tide rate and spring flow. In all cases, spring flow was a significant term. Additional terms, while significant in some cases did not materially improve the predictions and ultimately simple univariate equations of the following form were chosen. Table 4-7 provides a summary of the equations used, along with an estimate of the isohaline location at median Block 1 adjusted flow conditions (See Table 2-6). As in the case of cumulative volume and area equations, a line of organic correlation (LOC) 14 was used in lieu of an ordinary least squares (OLS) regression. The advantage (Helsel and Hirsch, 1992) of an LOC over the LOS is that variance in both the X and Y variable are minimized instead of just in the Y direction. This yields an equation which is identical if Y is predicted from X or if X is predicted from Y. Km = β o + β 1 * (1/Q ) Where Q is equal to average daily flow at Weeki Wachee Springs. 14 Also known as 'allometric relation', 'reduced major axis', 'maintenance of variance-extension, MOVE' and 'geometric mean functional regression'. ____________________________________________________________________________________________ Proposed Minimum Flows and Levels for Weeki Wachee River Page 64 of 164 Tide, Salinity and Water Quality
Table 4-7. Correlation (LOC) Summary – Isohaline Location Surface W ater, Mixed Tides Isohale n= r 2 B o B 1 km @ 157 cfs 0.5 71 0.674 -1.365 638.733 2.7 2 78 0.605 -1.177 540.499 2.3 3.5 77 0.517 -2.095 648.863 2.0 6 72 0.462 -3.162 773.885 1.8 8 69 0.523 -3.640 820.606 1.6 10 65 0.513 -4.234 868.916 1.3 11.5 61 0.533 -4.817 916.788 1.0 14 50 0.533 -5.495 955.052 0.6 16 38 0.486 -5.640 914.456 0.2 18 26 0.358 -5.338 822.955 -0.1 20 14 0.428 -5.366 799.837 -0.3 B o ttom W a te r , M ix ed T id es Isohale n= r 2 B o B 1 km @ 157 cfs 0.5 68 0.518 -1.347 666.043 2.9 2 75 0.563 -1.421 619.313 2.5 3.5 76 0.506 -2.094 698.826 2.4 6 73 0.440 -3.342 845.186 2.0 8 69 0.511 -3.700 876.222 1.9 10 66 0.537 -4.201 920.610 1.7 11.5 63 0.594 -4.790 966.636 1.4 14 53 0.563 -5.425 996.623 0.9 16 41 0.481 -5.893 1013.560 0.6 18 29 0.319 -5.034 807.913 0.1 20 17 0.371 -6.063 1009.940 0.4 isohaline_regress_tbl.xls 4.2.4 Longitudinal Salinity Estimation Regressions predicting the location of salinity at any location in the Weeki Wachee were developed. River kilometer and all of the flow, tide and weather variables were evaluated as candidate independent variables. This section describes the results. ____________________________________________________________________________________________ Proposed Minimum Flows and Levels for Weeki Wachee River Page 65 of 164 Tide, Salinity and Water Quality
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Weeki Wachee River System Recommend
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Conversion Table Metric to U.S. Cus
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5.2 FISH ..........................
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Figure 3-2 Location of Bathymetric
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LIST OF TABLES Table 1-1 Rule-of-Th
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Table 8-1 Summary of Weeki Wachee M
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Executive Summary Minimum Flows and
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CHAPTER 1 - PURPOSE & BACKGROUND OF
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1) flood flows that determine the b
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the area." What constitutes "signif
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Table 1-1 Rule-of-Thumb Estimates f
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this report identifies specific res
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1.6 Content of Remaining Chapters I
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Page 30 and 31: # # # circular vent 1.8 meters in d
Page 32 and 33: Figure 2-5 1970s Aerial with 1999 U
Page 34 and 35: is a variation of the Seminole word
Page 36 and 37: Figure 2-6 Hurricane Tracks near Ba
Page 38 and 39: varied by period. The variation was
Page 40 and 41: 2.3.2 Baseline Period Figure 2-10 i
Page 42 and 43: found (ktau p=0.06) between total g
Page 44 and 45: similarly across the springsheds ex
Page 46 and 47: Figure 2-15 Wavelet Filtered Discha
Page 48 and 49: Figure 2-16 INTB Groundwater Model
Page 50 and 51: 2.6 Seasonal Blocks As described in
Page 52 and 53: Table 2-6 Median (cfs) Flow by Bloc
Page 54 and 55: # # # Surface waters in this stretc
Page 56 and 57: 3.1.3 Segmentation Segmentation was
Page 58 and 59: Figure 3-5 Dominant SAV and Median
Page 60 and 61: Figure 3-6 Sediment Characteristics
Page 62 and 63: Figure 3-7 Shoreline / Buffer Veget
Page 64 and 65: CHAPTER 4 - TIDE, SALINITY & WATER
Page 66 and 67: Two additional harmonic pairs were
Page 68 and 69: Figure 4-5. Median Bottom Salinity
Page 70 and 71: Figure 4-7 Salinity Range (1984-200
Page 72 and 73: uncovering in response to strong wi
Page 74 and 75: E) Salinity = β o + β 1 *Flow 2 +
Page 76 and 77: Additional exploratory attempts usi
Page 80 and 81: A regression of the form below was
Page 82 and 83: Table 4-8 Median Water Quality of W
Page 84 and 85: Figure 4-10 Nitrate Concentration a
Page 86 and 87: CHAPTER 5 - BIOLOGICAL CHARACTERIST
Page 88 and 89: Figure 5-1 Principal Component Anal
Page 90 and 91: measured volume sampled which was t
Page 92 and 93: 5.2.2 Relation to inflow Response t
Page 94 and 95: Table 5-7 Location Response (km u )
Page 96 and 97: Table 5-9 Abundance Response to Inf
Page 98 and 99: animals can survive chronic exposur
Page 100 and 101: Figure 5-3 Number of Aerial Manatee
Page 102 and 103: Figure 5-5(a) Molluscan Presence /
Page 104 and 105: Table 5-11 Rank Order of Mollusc Ab
Page 106 and 107: Figure 5-5 Polymesoda caroliniana A
Page 108 and 109: Figure 6-1 Plankton Tow Flows Compa
Page 110 and 111: In application, a baseline area and
Page 112 and 113: 6.1.4 Benthos Protection for benthi
Page 114 and 115: Figure 6-3. Location of the Three P
Page 116 and 117: 7.2 Manatee Approach Establishing a
Page 118 and 119: Figure 7-2 Joint Probability of Occ
Page 120 and 121: Figure 7-3 Maximum Day Manatee Usag
Page 122 and 123: Figure 7- 6 Example Calculations fo
Page 124 and 125: Figure 7- 7 Estimation of Flow Redu
Page 126 and 127: Figure 7-8. Summary Results for the
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The reductions in flow that meet th
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probably accounts in part for the d
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Postel, S. and B.Richter. 2003. Riv
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Stanford, J.A., J.V.Ward, W.J. Liss
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Culter, J.K. 1986. Water Chemistry.
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CHAPTER 10 - APPENDICES 10.1 Append
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The wavelet used is the symmlets wa
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explains, the energy plot shows the
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0 if no significant withdrawal Z =
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One advantage of using this regress
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Technical Memorandum January 22, 20
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Lecanto 1 & 2 #S Well Site Descript
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Figure 4. HSPF subbasins in the INT
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Most of the limestone mines located
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3.1.3 Septic Tank Recharge in the S
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Figure 10. Groundwater grid in the
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Basso, R.J., 2004, Hydrogeologic Se
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10.2 Appendices - Chapter 3 Appendi
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10.3 Appendices - Chapter 4 Appendi
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Appendix 4-2 Data Sources Water qua
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Appendix 4-3 Water Quality Trend Gr
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Water Quality Trend Graphics, conti
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United States Department of the Int
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October 8,2008 Florida Fish and Wil
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Martin Kelly, Ph.D. Page 3 October
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Scientific Peer Review of the Propo
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Determining a low flow need during
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Current state water policy, as expr
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Spring, Twin Dees Spring and possib
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under varying flow regimes. The fir
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Weeki Wachee Rainfall, Springflow a
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6.0 Discharge:Precipitation (cfs/in
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Nevertheless, a major concern with
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system grid is not totally orthogon
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In a hydrodynamic model study, one
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analysis was rather cursory. The Di
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(taxa) richness in the WWRS. If the
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Freshwater Habitats Approximately 1
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ERRATA and EDITORIAL COMMENTS Page
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Page Paragraph Line Comment 14 Some
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Page Paragraph Line Comment 21 The
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Page Paragraph Line Comment 26 The
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REFERENCES Alber, M. 2002. A Concep
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Richter, B. D., J. V. Baumgartner,
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the regression equation used to pre
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and the three independent approache
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The Southwest Florida Water Managem
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the model in terms of tides, salini
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Attachment 1 - Comparison of salini
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Figure 1. Predicted drawdown (feet)
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