Preface; Editors; Contributors; Table of Contents; 1 Hydrology; 2 Soil Erosion and Sedimentation; 3 Nitrogen and Water Quality; 4 Phosphorus and Water Quality Impacts; 5 Pesticides and Water Quality Impacts; 6 Nonpoint Source Pollution and Livestock Manure Management; 7 Irrigated Agriculture and Water Quality Impacts; 8 Agricultural Drainage and Water Quality; 9 Water Quality Models; 10 Best Management Practices for Nonpoint Source Pollution Control: Selection and Assessment; 11 Monitoring; Index.