If d1 is the depth of cutting, d2 is the height of the bank from bed level r2 : 1 and r1 : 1 are the slopes in filling and cutting respectively, the horizontal distance n between the bed and bank, is

Irrigation engineering is the process of artificially supplying water to the soil in order to grow crops. It is the science of designing and planning an efficient, low-cost irrigation system that is tailored to natural conditions.

Irrigation engineering is also being used to research water recycling methods and develop new ways of minimizing water seepage and evaporation loss.