Irrigation Engineering | Canal Irrigation System | Civil Engineering |

CANAL IRRIGATION SYSTEM * Canal system consists of main canals, branch canals, distributaries and minors. * The soil which is formed by transportation and deposition of silt through the agency of water, over a course of time, is called alluvial soil. * Irrigation canals may be aligned in any of the following three ways: 1. as watershed canal or ridge canal 2. as contour canal 3. as side-slope canal * A canal aligned on the watershed saves the cost of construction of cross-drainage works. * A contour canal irrigates only on one side because of the area on the other side is higher. * Since a side-slope canal runs parallel to the natural drainage flow, usually it does not intercept drainage channels and hence avoids construction of cross-drainage works. * In storage schemes main canal need not always take off from the reservoir, it may take off from a pickup weir or a barrage. * Discharge in a minor canal is generally less than 2.5 cu mec. * The main canals, branch canals, distributaries ...