Weeki Wachee River System Recommended Minimum Flows and ...

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Figure 2-6 Hurricane Tracks near Bayport Florida 1905-2005 2.3 Flow and Hydrogeology (Adapted from Wolfe 1990 and Knochenmus & Yobbi 2001) Florida as we know it is the emergent part of a land feature known as the Florida Platform that extends southward and separates the deep waters of the Atlantic from the deep waters of the Gulf. Throughout the ages, portions of this platform have been episodically submerged and emergent depending upon sea level. The near surface limestone and dolostone bedrock that underlies the platform was deposited approximately 55 (Eocene) to 15 (early Miocene) million years (my) ago when sea level was higher. The historical change in sea level gives rise to step-like terraces that progress from the shoreline to the interior. The Weeki Wachee watershed lies largely in Palimico and Talbot terraces, while the springshed extends inland through several additional scarps. The near-Gulf terraces are part of a larger landform known as the Gulf Coastal Lowlands which includes land from the Gulf to an elevation of approximately 30 m above sea level. Further inland a prominent rise known as the Brooksville ridge begins approximately 45 km inland from the mouth of the Weeki Wachee River and extends eastward for an additional 50 km. Elevation of the southern portion of the Brooksville ridge ranges from 21 – 75 m above sea level. The Spring Coast is a notable karst landscape, characterized by springs, sinkholes, and ____________________________________________________________________________________________ Proposed Minimum Flows and Levels for Weeki Wachee River Page 22 of 164 Watershed Characteristics
undulating topography. Karst features are a result of repeated chemical dissolution and deposition of the underlying carbonate rock (upper Floridan aquifer) in response to fluctuations in sea level over geologic time. Density of karst features range from 10-25 /mi2 in the sand hill ridges of the Gulf Coastal Lowlands to 0-5 in the Brooksville Ridge. Enlarged pores (vugs) in the carbonate rock tend to concentrate groundwater flow leading to additional dissolution and/or fractures. The result is a coastline that is dominated not by surface runoff, but by discharge of groundwater. Within the Springs Coast there are five 1 st order (>100 cfs), eight 2 nd order (10-100 cfs) and four 3 rd order (
Page 1: Weeki Wachee River System Recommend
Page 4 and 5: Conversion Table Metric to U.S. Cus
Page 6 and 7: 5.2 FISH ..........................
Page 8 and 9: Figure 3-2 Location of Bathymetric
Page 10 and 11: LIST OF TABLES Table 1-1 Rule-of-Th
Page 12 and 13: Table 8-1 Summary of Weeki Wachee M
Page 14 and 15: Executive Summary Minimum Flows and
Page 16 and 17: CHAPTER 1 - PURPOSE & BACKGROUND OF
Page 18 and 19: 1) flood flows that determine the b
Page 20 and 21: the area." What constitutes "signif
Page 22 and 23: Table 1-1 Rule-of-Thumb Estimates f
Page 24 and 25: this report identifies specific res
Page 26 and 27: 1.6 Content of Remaining Chapters I
Page 28 and 29: CHAPTER 2 - WATERSHED CHARACTERISTI
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 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 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
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CHAPTER 5 - BIOLOGICAL CHARACTERIST
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Figure 5-1 Principal Component Anal
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measured volume sampled which was t
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5.2.2 Relation to inflow Response t
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Table 5-7 Location Response (km u )
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Table 5-9 Abundance Response to Inf
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animals can survive chronic exposur
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Figure 5-3 Number of Aerial Manatee
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Figure 5-5(a) Molluscan Presence /
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Table 5-11 Rank Order of Mollusc Ab
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Figure 5-5 Polymesoda caroliniana A
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Figure 6-1 Plankton Tow Flows Compa
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In application, a baseline area and
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6.1.4 Benthos Protection for benthi
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Figure 6-3. Location of the Three P
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7.2 Manatee Approach Establishing a
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Figure 7-2 Joint Probability of Occ
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Figure 7-3 Maximum Day Manatee Usag
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Figure 7- 6 Example Calculations fo
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Figure 7- 7 Estimation of Flow Redu
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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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Page 174 and 175:
Page 176 and 177:
Page 178 and 179:
Page 180 and 181:
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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