Hydraulics is as a branch of science that deals with the effects of water or other liquids in motion. Through this section, you are going to get introduced to the characteristics of water both in motion and at rest. The emphasis will be on the relationships between flow, velocity, and pressure. With this knowledge you will be able to determine pressure the related characteristics such as losses in pipe and fittings and pressures at various points in an irrigation system. Through this section, you will also get familiar with natural water sources and how does it affect the surrounding area.