Hydrologic-Land Use Interactions in a Florida River Basin
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HYDROLOGIC-LAND USE I^TTERACTIONS IN A FI.ORIDA RIVER BASIN By PHILIP BRUCE BEDIENT A DISSERTATION PRESENTED TO THE GRADUATE COUNCIL OF THE UNIVERSITY OF FLORIDA IN PARTIAL RILFILLMENT OF THE REQUIREMENTS FOR THE DEGREE OF DOCTOR OF PHILOSOPHY UNIVERSITY OF FLORIDA 1975 DEDICATED TO MY WIFE CINDY WHO WOKK-ED UNSELFISHLY FOR FOUR YEARS SO THAT I COULD COMPLETE m EDUCATION ACKNOI-JLEDGMENTS I would like to thank the members of my graduate comraittee for their encouragement and advice throughout the research effort. I would espe- cially like to thank Dr. W.C. Ruber for his undivided attention and assistance from the early conception of the research to the final days of writing and review. I would also like to thank Dr. J. P. Heaiiey and Dr. H.T. Odum for many hours of enlightening discussions and lectures. The primary influence for the overall research has come from these three pro- fessors, and I am deeply grateful for their guidance throughout the past five years. Special thanks are due to several of my co-workers vjho provided support and encouragement when it V7as needed. Without Mr. Steve Gatewood's cartographic and drafting ability, much of the research would have been incomplete. Mr. Jerry Bowden contributed many hours of tedious effort so that input data and computer outputs were available on time, I am grateful to them both for their hard work and good friendship. I would like to thank the research group at the Central and Southern Florida Flood Control District for funding the Kissimraee Project, and for providing such able assistance in data collection and analysis. Without Mrs. Joye Barnes typing and editing ability, I doubt seriously that the manuscript would have been completed on time- I am indebted to her for unselfish effort during the last few weeks of writing. Finally, I extend very special thanks to the most important mem,- ber of the team, my wife Cindy, who worked unselfishly for four years iii so that I might complete the PhD. I am also especially grateful to her for helping assemble the final draft copy. iv TABLE OF CONTENTS ACKNO\^^LEDG^^ENTS LIST OF TABLES LIST OF FIGURES ABSTRACT I. INTRODUCTION AND OVERVIEW Obj ectives Overview of the Research II. HYDROLOGIC PRINCIPLES IN WATERSHED I'lANAGEMENT The Hydrologic Cycle The Hydrologic Equation The Runoff Cycle Drainage Basin Characteristics Measurement of Drainage Density Drainage Density Relationships Hydrologic Effects of Vegetation and Land Use Forest Hydrology Hydrology of Agricultural Lands Hydrology of Marshes and Swamps Land Use and Retention Time Watershed Simulation Models General Equations Review of Available Models III. WATER QUALITY AND ECOLOGICAL PRINCIPLES IN WATERSHED MA^3AGEI-IENT Introduction Non-Point Pollution Sources Nutrient Cycling in Aquatic Ecosystems Nutrient Cycling in Small Watershed Ecosystems Nutrient Budgets in Lake Systems V TiVBLE OF CONTENTS (Continued) Page Models of Water Quality and Ecological Processes 89 Review of Available Models 92 Concepts of Water Quality Control 97 IV. ENYIROlfi-IENTAL RESOURCES IN THE KISSTMMEE RIVER BASIN 99 Description of the Basin 99 Climate and Rainfall 101 Physical Geography and Geology 101 Water Resources 105 Soils 108 Vegetation 108 Fish and Wildlife Resources 112 Water and Land Resource Problems 113 Agricultural Land 113 Urban Land Natural Land 114 Water xWailability 115 Flood Control Plan 118 Historical Land Use Changes 122 Water Quality Monitoring in the Kissimmee River Basin 130 V. LINK/iGE MECMKISMS IN HYDROLOGIC-LAl-ID USE ANALYSIS 137 Introduction to Storage-Control Concepts 13 7 Retention Time for Runoff Control 137 Retention Time for Water Quality Control 140 Storage Concepts 1^3 Hydrologic Analysis 143 The water balance 144 Description of the hydrologlc-land use model 151 Calculated retention times 158 Non-Point Nutrient Loadings 160 Transport Concepts 163 Drainage Density as a Transport Concept/ 163 Relationship with land use 165 Measurement of drainage density 166 Drainage density and hydrologic effects 183 Drainage density and v;ater quality effects 187 Flood Routing Concepts 203 vi TABLE OF CONTENTS (Continued) Page Description of the routing method 206 Hydrologic calibration of the Hiodel 210 Water quality in the river 217 Lakes as Storage Control Units 221 Lake level fluctuations and flood control 222 Lake drax^doum and water quality 231 Water quality and retention time 236 Marsh Areas for Runoff Storage and Control 240 Retention time and storage 243 Retention time and nutrient uptake 244 VI. RESULTS AND CONCLUSIONS 246 Introduction 246 Storage and Retention Time 246 Transport and Retention Time 247 Drainage Density Results 248 River Routing Results 249 Lake and Marsh Studies 251 Summary Conclusions 253 REFERENCES 254 BIOGRAPHICAI. SKETCH 262 vil LIST OF TABLES Table ?mi 2.1 Coshocton Experimental Watersheds. Description of 1938 and 1958 Land Use. 44 2.2 Effect of Treatments on Water Yield: Coshocton Experimental Uatersheds. 45 2.3 Runoff Curve Numbers for Hydrologic Soil-Cover Complexes. 51 2.4 Values of Manning's Roughness Coefficient n. 54 3.1 Critical Loading Rates for Nitrogen and Phosphorus. 72 3.2 Agricultural Nutrient Runoff Coefficients. 78 3.3 Typical Values of Nutrient Runoff Coefficients. 79 3.4 Input by Precipitation and Output in Streamflow for Various Nutrients in an Undisturbed Watershed. 85 4.1 Surface Area of the Larger Lakes in Kissimmee- Ever glades Area. -^'06 4.2 Land by Capability Class in the Kissimmee River Basin. 110 4.3 Acres Irrigated - Kissimmee-Everglades Area - 1968, 1980, and 2020. 117 5.1 Matrix of Curve Numbers and Maximum Soil Storage. 155 5.2 Base Flow Retention Times. 159 5.3 Surface Flow Retention Times. 161 5.4 Relative Non-Point Source Loadings. 164 5.5 Land Use Analysis of Kissimmee River Tributaries. 167 5.6 Drainage Density Measurements in the Kissimmee River Basin. 169 viii LIST OF TABLES (Continued) Table Page 5.7 Standards for Inclusion of Streams in Topographic Maps of U.S. Mapping Agencies. 171 5.8 List of USGS Quadrangle >Iaps for the Kissinimee River Basin 172 5.9 Drainage Density in the Lower Kissimmee River Basin. 176 5.10 Drainage Density and Retention Times in Kissinnnee River Basin Planning Units. 190 5.11 Analysis of Floods in the Kissimmee River Basin. 205 5.12 Surface and Subsurface Runoff by Planning Unit (1967-1969). 214 5.13 Comparison of Measured (M) and Predicted (P) Runoff Volumes (1967-1969). 215 5.14 Natural and Regulated Lake Fluctuation. 224 5.15 Hydrologic Budget for Lake Tohopekaliga. 229 5.16 Averaged Water Quality of Lake Tohopekaliga Before, During, and After Drawdown. 232 5.17 Nutrient Budget of Lake Tohopekaliga. 235 ix LIST OF FIGURES Figure 1333. 1.1 Location J-Iap of the Kissimmee River Basin. 5 2.1 Components of the Hydrologic Cycle. 13 2.2 Water Budget of a Region. 13 2.3A Streamflow Hydrograph Separation Techniques.. 19 2.3B Components of the Runoff Cycle. 21 2.4 Conceptual Hydrologic Models. 22 2.5 Mean Annual Runoff versus Drainage Area. 27 2.6 The Significance of Drainage Basin Shape and Network Pattern on Hydrograph Response. 29 2.7 Change in Water Yield after Conversion of Hardwood to Grass and Change in Soil Moisture under Thinned and Unthinned Loblolly Pine Plantation. 39 2.8 First-Year Streamflow Increases after Treatment versus Reduction of Forest Cover and Showing Influence of Aspect. 41 2.9 Streamflow Increases for Coweeta Watershed 13 following Treatments and Decrease in Water Yield versus Percentage of Area Reforested. 42 2.10 Effect of Farm Practices on Runoff Volumes. 46 2.11 Comparison of Runoff from Conservation Measures, W-5, and Straight-Row Farming, W-3. 47 2.12 Land Use and Treatment Effect on 25-Year Runoff Frequences. 49 2.13 Results of Infiltration Studies on Various Soil- Cover Complexes. 49 2.14 Soil Conservation Service Rainfall-Runoff Relationships. 50 X . LIST OF FIGURES (continued) Figures Page 2. .15 Effect of Vegetation and Soil Storage on Runoff Hydrograpbs. ^3 2.16 The Behavior of Manning's n in Grassed Channels, Where Curves A to E Show Declining Vegetative Retardauce ^5 2.17 Effect of Canals on Groundvjater Elevation. 59 2.18 Attenuation of Mean Annual Flood by Lakes and Swamps 2.19 Annual Water Yields as Observed and as Computed by the USDA Fiydro logic Model, 68 3.1 Comparison of Non-Point Source Concentrations of Total Nitrogen and Total Phosphorus. 3.2 Comparison of Non-point Source Area Yield Rates of Total Nitrogen and Total Phosphorus. 76 3.3 Water Qaulity and Ecological Interactions. 90 3.4 Segmented Stream System for Hydrologic and Water Quality Modeling. 93 4.1 Location Map of the Kissimmee River Basin. 100 4.2A Mean Annual Precipitation, Kissimmee-Everglades Area. 102 4.2B Monthly Rainfall and Temperature in the Kissimmee River Basin. 103 4.3 Topographic Map of the Kissimmee Pdver Basin. 104 4.4 General Soil Map of the Kissimmee River Basin, 109 4.5 Vegetation Map of the Kissimmee River Basin. HI 4.6 Land Use Patterns (1958) in the Kissimmee River Basin. 123 4.7 Land Use Patterns (1972) in the Kissimmee River Basin. 124 XX LIST OF riGURES (continued) Figiira ZiLSr. 4.3/v Detailed Land Use Changes (1958, 1972, 2020), Planning Unit 5. 126 4.8B Detailed Land Use Changes (1958, 1972, 2020), Planning Unit 10. 127 4.8C Detailed Land Use Changes (1958, 1972, 2020), Planning Unit 13. 128 4.8D Detailed Land Use Changes (1958, 1972, 2020), Planning Unit 16. 129 4.9 Tributary and Water Quality Sampling Locations, Lovjer Kissimmee River Basin. 132 4.10 Total P Concentration as a Function of Sampling Location, Kissimmee River Basin. 133 4.11 Total P Concentration in Tributary Inflows, Planning Units 13 and 14 of the Kissimmee River Basin.