This can be a valuable guide to the location of drinking and agricultural water in arid and semiarid areas.
It is also useful as a form of agricultural and municipal water treatment.
Fight poverty by improving access to agricultural water and its use.
But some environmental groups fear the shift to agricultural water has actually lulled some districts into complacency about conservation.
In 2006 it was calculated that the cotton industry consumed 87% of the agricultural water taken from the Gwydir River.
That's way too expensive for agricultural water.
But critics say that under Colorado water law, this agricultural water could not be converted easily to other uses.
It supplies 25,000 farmers and provides 25 percent of all agricultural water in the state.
Farm water, also known as agricultural water, is water committed for use in the production of food and fibre.
In many rural areas snow is the single most important source of agricultural water.