Water Management: When the government monitors how much water is pumped through irrigation systems to farms, it means that water is not wasted. Water is shared by all farmers in the area equally or according to the of their crops. Water management considers natural rainfall patterns, the different needs of crops and changes in climate over time. Water delivery to crops takes a variety of forms such as irritations, canals, open and covered drainage ditches, above ground tubing systems, levees and sprinkler systems that can be controlled to provide full water flow to light mist. Science is used to reduce evaporation levels and conserve water.