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Better Farming Series 28 - Water: Where Water Comes from (FAO, 1981, 31 p.) (introduction...) Preface Why we study water (introduction...) Rainfall Water In the ground The water table Water on the surface Evaporation Transpiration The process begins again When rain falls (introduction...) How much rain falls Kind of soil Slope of the land Plants Water in the ground (introduction...) Water and the soil Water and the subsoil Water and parent rock Where to find water in the ground (introduction...) Wells Springs Water on the surface (introduction...) Groundwater can become surface water Surface water run- off Where to find surface water (introduction...) Swamps, pond and lakes Streams and rivers