Weeki Wachee River System Recommended Minimum Flows and ...

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Figure 5-5 Polymesoda caroliniana Abundance as Function of Salinity in Tidal Rivers along West Coast of Florida P. caroliniana (#/m2) 100 Mollusc_Plot.syc 90 80 70 60 50 40 30 20 10 30 25 20 15 10 Salinity (ppt) 5 Table 5-13 Response Parameters for Dominant Native Mollusc in Weeki Wachee and Mud Rivers (Montagna 2006) Taxa r 2 a b c Polymesoda Carolinia 0.32 28.8 0.66 4.89 Crassostrea Virginica 0.33 19.3 0.18 22.4 Littoraria irrorata 0.33 6.43 0.31 13.8 Mollusc_Raw_Dat.xls ____________________________________________________________________________________________ Proposed Minimum Flows and Levels for Weeki Wachee River Page 91 of 164 Biological Characteristics
CHAPTER 6 - RESOURCES OF CONCERN & CRITERIA 6.1 Resource Criteria / Goals - Estuarine Evaluation criteria were established for salinity habitat, and cold weather manatee habitat using a flow record corrected for anthropogenic impacts (See Section 2.5). Additional criteria were established for fish and invertebrates, SAV, benthos and mollusc using uncorrected flow (e.g. observed record) since many of these tools were based on existing conditions and/or maximums. 6.1.1 Fish & Invertebrates As discussed in Section 5.2.2.3, the plankton net collection resulted in three positive flow responses for taxa abundance, one of which was below the minimum explanatory criteria (e.g. r 2 < 0.3). The two remaining results (See Table 5-7) were identified as resources warranting further evaluation. Those taxa included a gastropod (sea slugs, opisthobranch) and the unidentified harpacticoid (copepod) previously discussed in Chapter 5. In addition, the three taxa from the seine and trawl results with the strongest positive abundance/flow responses were chosen for further evaluation. One 20 of these (pinfish, Lagodon rhomboides) exhibited a simple power relationship, while the other two (pink shrimp, Farfantepenaeus and blue crab, Callinectes sapidus) exhibited a quadratic response with an abundance maximum at mid-flow. As stated in Section 5.2, the flow that existed during the fish and invertebrate sampling was higher than normal. Consequently, the domain (~166 – 252 cfs) of the response regressions is higher than the unadjusted Block 1 and 2 median flows (144 and 162 cfs respectively) for the baseline period chosen (1984-2004) ( Figure 6-1 compares the flow on plankton tow sample dates with the median and 90 th percentile flows for the entire baseline period.) In the absence of a usable baseline flow for comparison, the initial intent of establishing a criteria for the seine and trawl quadratic regressions was the flow at peak abundance. For consistency, the criteria for the plankton tow results and the linear seine / trawl was based on the mean of the flows at peak abundance as summarized in Table 6-1. (See Table 5-7 and Table 5-8 for response equations. For reasons described in Section 7.1, these criteria were not applied as part of the MFL evaluation.) 20 Three pseudo-species of pinfish were the highest r 2 of all 20 pseudo-species. Rather than evaluate the same taxa repetitively, only the strongest response (seine, < 35 mm) was retained for further evaluation. ____________________________________________________________________________________________ Proposed Minimum Flows and Levels for Weeki Wachee River Page 93 of 164 Resources of Concern & Criteria
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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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CHAPTER 2 - WATERSHED CHARACTERISTI
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# # # circular vent 1.8 meters in d
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Figure 2-5 1970s Aerial with 1999 U
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is a variation of the Seminole word
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Figure 2-6 Hurricane Tracks near Ba
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varied by period. The variation was
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2.3.2 Baseline Period Figure 2-10 i
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found (ktau p=0.06) between total g
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similarly across the springsheds ex
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Figure 2-15 Wavelet Filtered Discha
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Figure 2-16 INTB Groundwater Model
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2.6 Seasonal Blocks As described in
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Table 2-6 Median (cfs) Flow by Bloc
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# # # 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 78 and 79: 86 = 186 cfs, SWFWMD 1994-96 = 167
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 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
Page 128 and 129: The reductions in flow that meet th
Page 130 and 131: probably accounts in part for the d
Page 132 and 133: Postel, S. and B.Richter. 2003. Riv
Page 134 and 135: Stanford, J.A., J.V.Ward, W.J. Liss
Page 136 and 137: Culter, J.K. 1986. Water Chemistry.
Page 138 and 139: CHAPTER 10 - APPENDICES 10.1 Append
Page 140 and 141: The wavelet used is the symmlets wa
Page 142 and 143: explains, the energy plot shows the
Page 144 and 145: 0 if no significant withdrawal Z =
Page 146 and 147: One advantage of using this regress
Page 148 and 149: Technical Memorandum January 22, 20
Page 150 and 151: Lecanto 1 & 2 #S Well Site Descript
Page 152 and 153: Figure 4. HSPF subbasins in the INT
Page 154 and 155: 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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