Anclote River System Recommended Minimum Flows and Levels February 2010 Final

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Anclote River System Recommended Minimum Flows and Levels February 2010 Final Photo Credit – US Dept. Commerce, 1954 Anclote River System Recommended Minimum Flows and Levels February 2010 Final Prepared by: Southwest Florid a Water Management District Pursuant to 373.042 F.S. Back of Front Cover D:\Anclote\Report\Final\Anclote_MFL_Final.doc Last Save : 2/22/2010 11:02 AM Anclote River System Recommended Minimum Flows and Levels February 2010 Ecologic Evaluation Section Resource Projects Department Southwest Florida Water Management District Brooksville, Florida 34604-6899 Michael G. Heyl, M.S. Chief Environmental Scientist Adam B. Munson, Ph.D. Senior Environmental Scientist Jason Hood, M.S. Environmental Scientist Jonathan Morales, Ph.D. Staff Environmental Scientist Marty Kelly, Ph.D. Director, Minimum Flows and Levels Program The Southwest Florida Water Management District (District) does not discriminate on the basis of disability. This nondiscrimination policy involves every aspect of the District's functions, including access to and participation in the District's programs and activities. Anyone requiring reasonable accommodation as provided for in the Americans with Disabilities Act should contact the District's Human Resources Director, 2379 Broad Street, Brooksville, Florida 34604-6899; telephone (352) 796-7211, ext. 4702 or 1-800-423-1476 (FL only), ext. 4702; TDD (FL only) 1-800-231-6103; or email to [email protected]. ________________________________________________________________________________________________________ Proposed Minimum Flows and Levels for Anclote River System i D:\Anclote\Report\Final\Anclote_MFL_Final.doc Last Save : 2/22/2010 11:02 AM Conversions Table Conversion Table Metric to U.S. Customary Multiply By To Obtain cubic meters per second (m3/s) 35.31 cubic feet per second (cfs) cubic meters per second (m3/s) 23 million gallons per day (mgd) millimeters (mm) 0.03937 inches (in) centimeter (cm) 0.3937 inches (in) meters (m) 3.281 feet (ft) kilometers (km) 0.6214 statute miles (mi) square meters (m2) 10.76 square feet (ft2) square kilometers (km2) 0.3861 square miles (mi2) hectares (ha) 2.471 acres liters (l) 0.2642 gallons cubic meters (m3) 35.31 cubic feet (ft3) cubic meters (m3) 0.0008110 acre-ft milligrams (mg) 0.00003527 ounces grams (g) 0.03527 ounces kilograms (kg) 2.205 pounds Celsius degrees (oC) 1.8*(oC) + 32 Fahrenheit (oF) US Customary to Metric inches (in) 25.40 millimeters (mm) inches (in) 2.54 centimeter (cm) feet (ft) 0.3048 statute miles (mi) 1.609 square feet (ft2) 0.0929 square meters (m2) square miles (mi2) 2.590 square kilometers (km2) acres 0.4047 hectares (ha) gallons (gal) 3.785 liters (l) cubic feet (ft3) 0.02831 cubic meters (m3) acre-feet 1233.0 cubic meters (m3) Fahrenheit (oF) 0.5556*(oF-32) Celsius degrees (oC) US Customary to US Customary acre 43560 square feet (ft2) square miles (mi2) 640 acres cubic feet per second (cfs) 0.646 million gallons per day (mgd) ________________________________________________________________________________________________________ Proposed Minimum Flows and Levels for Anclote River System ii D:\Anclote\Report\Final\Anclote_MFL_Final.doc Last Save : 2/22/2010 11:02 AM Acronyms and Abbreviations Acronyms and Definitions ac acres AMO Atlantic Multidecadal Oscillation BOD Biochemical Oxygen Demand CDF Cumulative Distribution Function cfs Cubic feet per second cms cubic meters per second COB Center of Abundance District Southwest Florida Water Management District DO Dissolved oxygen DOY Day of Year F.A.C. Florida Administrative Code F.S. Florida Statutes FDEP Florida Department of Environmental Protection FDOT Florida Department of Transportation FLUCCS Florida Land Use, Cover and Forms Classification System FMRI Florida Marine Research Institute (Presently FWRI) FWC Florida Fish and Wildlife Conservation Commission FWRI Florida Fish and Wildlife Research Institute GIS Geographic Information Service ha hectares INTB Integrated Northern Tampa Bay model Km Kilometer MFLs Minimum Flows and Levels mg/l Milligrams per liter mgd Million gallons per day MLLW Mean Lower Low Water NAVD 88 North American Vertical Datum 1988 NGS National Geodetic Society NGVD 29 National Geodetic Vertical Datum 1929 NPL National Priority List PHABSIM Physical Habitat Simulation Model ppt parts per thousand PSU Practical Salinity Units SAS Surficial Aquifer System SAV Submerged Aquatic Vegetation SWFWMD Southwest Florida Water Management District TDS Total Dissolved Solids TKN Total Kjehldal Nitrogen TN Total Nitrogen TSS Total Suspended Solids UFA Upper Floridan Aquifer USF University of South Florida USFWS United States Fish and Wildlife Service USGS United States Geological Survey WUA Weighted Usable Area ________________________________________________________________________________________________________ Proposed Minimum Flows and Levels for Anclote River System iii D:\Anclote\Report\Final\Anclote_MFL_Final.doc Last Save : 2/22/2010 11:02 AM Table of Contents Chapter 1 - Purpose & Background of MFL .................................................................................. 1 1.1 Overview and Legislative Direction ..................................................................................... 1 1.2 Historical Perspective ......................................................................................................... 2 1.3 The Flow Regime ................................................................................................................ 2 1.4 Ecosystem Integrity and Significant Harm .......................................................................... 3 1.4.1 Defining Significant Harm ............................................................................................. 4 1.4.2 Minimum Evaluation Criteria ........................................................................................ 5 1.5 Summary of the SWFWMD Approach for Developing Minimum Flows .............................. 6 1.5.1 Elements of Minimum Flows ........................................................................................ 6 1.5.2 A Building Block Approach ........................................................................................... 8 1.5.3 Flows and Levels ....................................................................................................... 10 1.6 Content of Remaining Chapters ........................................................................................ 11 Chapter 2 - Watershed Characteristics – Physical and Hydrology ............................................. 13 2.1 Overview ........................................................................................................................... 13 2.2 Watershed Description (material in this section was taken largely from Tampa Bay Anclote River Watershed Management Plan, SWFWMD 2002b) ........................................... 13 2.2.1 Land Use .................................................................................................................... 15 2.3 Climate / Meteorology ....................................................................................................... 23 2.4 Flow and Hydrogeology .................................................................................................... 23 2.4.1 Flow Data Sources ..................................................................................................... 24 2.4.2 Un-gauged Flow ......................................................................................................... 25 2.4.3 Water Use .................................................................................................................. 25 2.5 Corrections for Anthropogenic Impacts ............................................................................. 27 2.5.1 Flow Definitions .......................................................................................................... 29 2.5.2 Baseline Period .......................................................................................................... 29 2.6 Seasonal Blocks ............................................................................................................... 29 Chapter 3 - Estuary Characteristics ............................................................................................ 37 3.1 Physical - General ............................................................................................................. 37 3.1.1 Area / Volume / Length .............................................................................................. 39 3.2 Structural Alterations ......................................................................................................... 41 3.3 Shoreline & Riparian Habitats ........................................................................................... 41 3.4 Sediments & bottom habitats ............................................................................................ 44 Chapter 4 - Tide, Salinity & Water Quality ................................................................................. 46 4.1 Tide ................................................................................................................................... 46 4.2 Salinity .............................................................................................................................. 46 4.2.1 Descriptive ................................................................................................................. 46 4.2.2 Relation to Inflow .......................................................................................................
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