TABLE OF CONTENTS

ABSTRACT

CHAPTER 1 INTRODUCTION
    1.1.PROBLEM STATEMENT
    1.2.RESEARCH OBJECTIVES
    1.3.METHODOLOGY AND APPROACH

CHAPTER 2 LITERATURE REVIEW
    2.1.SOIL EROSION MODELS
            2.1.1. Rationale and Limitations
            2.1.2. Erosion Models Listing
            2.1.3. Soil Erosion Modeling and GIS
    2.2.GEOVISUALIZATION AND TIME-SERIES ANIMATION
    2.3.CELL SIZE EFFECTS
            2.3.1. On Landscape Representation
            2.3.2. On Simulated Flows
            2.3.3. On Soil Erosion Prediction
    2.4.SUMMARY

CHAPTER 3 THE REVISED CASC2D-SED MODEL
    3.1.MODEL DEVELOPMENT
    3.2.CASC2D-SED DESCRIPTION
    3.3.FLOW ROUTING ALGORITHM
            3.3.1. Precipitation
            3.3.2. Interception
            3.3.3. Infiltration
            3.3.4. Overland Flow
            3.3.5. Channel Flow
    3.4.SEDIMENT ROUTING ALGORITHM
            3.4.1. New Sediment Transport Approximation
            3.4.2. Revised Upland Erosion and Sediment Transport
            3.4.3. Implementation of Channel Sediment Transport
            3.4.4. Suspended Sediment Settling
    3.5.CASC2D-SED GRIDS TIME-SERIES VISUALIZATION
    3.6.SUMMARY

CHAPTER 4 STUDY SITE DATA SET
    4.1.GOODWIN CREEK EXPERIMENTAL WATERSHED DESCRIPTION
    4.2.DEM PRE-PROCESSING AND RESAMPLING
            4.2.1. Elevations and Slopes
            4.2.2. Channel Network and Watershed Delimitation
    4.3.SOIL TYPE AND LAND USE GRIDS RESAMPLING
    4.4.SUMMARY

CHAPTER 5 MODEL CALIBRATION AND VALIDATION
    5.1.CASC2D-SED SET UP
            5.1.1. Watershed Definition
            5.1.2. Precipitation Events
            5.1.3. Parameter Set
    5.2.RESULTS
            5.2.1. Calibration Event
            5.2.2. Validation Events
    5.3.SUMMARY

CHAPTER 6 MODELING PREDICTIONS AT DIFFERENT GRID SIZES
    6.1.CONCEPTUAL EQUILIBRIUM UNIT SEDIMENT DISCHARGE
    6.2.MODEL APPLICATION AT DIFFERENT SPATIAL RESOLUTIONS
            6.2.1. Method
            6.2.2. Results
    6.3.SUMMARY

CHAPTER 7 SUMMARY AND CONCLUSIONS
    7.1. SUMMARY
    7.2. CONCLUSIONS

CITED REFERENCES

APPENDIX I: CASC2D-SED CODE
APPENDIX II: GOODWIN CREEK RESAMPLED GRIDS
APPENDIX III: CALIBRATION AND VALIDATION RESULTS