Irrigation and Drainage Engineering

  1. Surface Drainage Systems
    1. Land Forming and Grading
      1. Objectives
        1. Surface Water Removal
          1. Uniform Water Application
            1. Equipment Operation
            2. Grading Methods
              1. Plane Grading
                1. Profile Grading
                  1. Contour Grading
                  2. Equipment and Techniques
                    1. Land Planes
                      1. Scrapers
                        1. Laser-controlled Grading
                        2. Quality Control
                          1. Grade Checking
                            1. Smoothness Standards
                              1. Acceptance Criteria
                            2. Open Ditch Systems
                              1. Ditch Types
                                1. Field Ditches
                                  1. Collector Drains
                                    1. Main Drains
                                      1. Outlet Channels
                                      2. Ditch Design
                                        1. Cross-sectional Design
                                          1. Grade Requirements
                                            1. Side Slope Stability
                                              1. Freeboard Provisions
                                              2. Construction Methods
                                                1. Excavation Equipment
                                                  1. Spoil Disposal
                                                    1. Channel Shaping
                                                      1. Erosion Protection
                                                      2. Maintenance Requirements
                                                        1. Sediment Removal
                                                          1. Vegetation Control
                                                            1. Bank Repair
                                                              1. Access Maintenance
                                                            2. Surface Drain Sizing
                                                              1. Runoff Estimation
                                                                1. Rational Method
                                                                  1. SCS Curve Number Method
                                                                    1. Time of Concentration
                                                                    2. Hydraulic Design
                                                                      1. Manning's Equation Application
                                                                        1. Channel Capacity
                                                                          1. Velocity Limitations
                                                                          2. Drainage Area Determination
                                                                            1. Watershed Delineation
                                                                              1. Contributing Areas
                                                                                1. Runoff Coefficients
                                                                              2. Erosion Control
                                                                                1. Channel Protection
                                                                                  1. Grass Lining
                                                                                    1. Rock Lining
                                                                                      1. Concrete Lining
                                                                                        1. Geotextile Protection
                                                                                        2. Energy Dissipation
                                                                                          1. Drop Structures
                                                                                            1. Check Dams
                                                                                              1. Stilling Basins
                                                                                              2. Sediment Control
                                                                                                1. Sediment Basins
                                                                                                  1. Debris Barriers
                                                                                                    1. Upstream Controls

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                                                                                                10. Agricultural Drainage Principles

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                                                                                                12. Subsurface Drainage Systems