Irrigation is the artificial exploitation and distribution of water at project level aiming at application of water at field level to agricultural crops in dry areas or in periods of scarce rainfall to assure or improve crop production. Irrigation water management is the act of timing and regulating irrigation water applications in a way that will satisfy the water requirement of the crop without the waste of water, soil, plant nutrients, or energy. Irrigation Management is important since it helps determine future Irrigation expectations.Increases in fuel prices means that pumping extra irrigation water increases irrigation expenses without increasing income. High nitrate levels have been found in many areas of the state. 

The four methods of irrigation are:

Surface. Sprinkler. Drip/trickle. Subsurface.