SURFACE IRRIGATION

1. Water Supply 1.1 Methods Of Water Delivery 1.2 Water Requirement 1.3 Small Regulating Reservoirs 2. Soils 2.1 Infiltration Rates 2.2 Water-Holding Capacities Of Soils 3. Land Preparation 3.1 Soil Survey 3.2 Engineering 3.3 Equipment 4. Open Distribution Systems 4.1 Unlined Ditches 4.2 Lined Ditches 4.3 Flumes 4.4 Design Of Open Distribution Systems 4.5 Control Structures For Ditches 4.5.1 Canal Outlets 4.5.2 Division Boxes 4.5.3 Checks 4.5.4 Drops 4.5.5 Other Structures 4.5.6 Inverted Siphons 4.5.7 Outlets 5. Piped Distribution Systems 5.1 Types Of Pipe 5.2 Costs 5.3 Types Of Pipeline Systems 5.4 Friction Losses 5.5 Control Structures For Pipelines 5.5.1 Inlet Gates 5.5.2 Flow-Control Gates And Valves 5.5.3 Air Vents 5.5.4 Outlets 5.5.5 Hydrants 5.5.6 Gated Pipes 6. Selecting The Method Of Irrigation To Use 7. Basin Irrigation 7.1 Relation Of Soil Type To Flow Of Water And Area In Each Basin 7.2 Slope In Relation To Size And Shape Of Basin 7.3 Forming The Levees 7.4 Filling The Basin With Water 8. Border Irrigation 8.1 Soils 8.2 Slope 8.3 Width Of Border-Strips 8.4 Length Of Border-Strips 8.5 Stream Size 8.6 Design Criteria 8.7 Forming The Levees 8.8 Controlling The Water 9. Wild Flooding 9.1 Ditches 9.2 Outlets 9.3 Water Management 10. Furrow Irrigation 10.1 Furrow And Bed Shapes 10.2 Furrow Spacing 10.3 Furrow Slopes 10.4 Contour Furrows 10.5 Benched Furrows 10.6 Zigzag Furrows 10.7 Furrow Length 10.8 Flow Rates 10.9 Regulating The Flow Of Water Into Furrows 10.10 Average Depth Of Water Applied 11. Corrugation Irrigation 11.1 Soils 11.2 Land Preparation 11.3 Slope 11.4 Length Of Runs 11.5 Forming The Corrugations 11.6 Flow Of Water In Corrugations 12. Drip Irrigation 12.1 Requirement Of Drip Systems 12.2 Uses Of Drip Irrigation 12.3 Dangers From Salt Accumulation In The Soil 12.4 Types Of Emitters 12.5 Performance Of Emitters 12.6 Plugging Of Emitters 12.7 Supply Lines 12.8 Care In Using Plastic Materials

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