Water
is the most precious and scarce resource that has great utility in
agriculture and electricity production. To conserve and for the optimum
utilization of water, canals and dams are constructed. Through canals,
water is transferred from rainfed areas to water scarce areas thereby
increasing the agricultural production and promoting balance regional
development. For construction of canal, lots of heavy and light
machineries are used. Canal construction involves digging, lining,
paving, loading and unloading of materials, crushing, etc. The
machineries used for these purposes are :