How many pivots for irrigation are in use?

Most states have some stats on center pivot and linear irrigation systems (e.g. Nebraska, the leader in center pivot irrigation, has about 60,000 systems), but I am not aware of any GIS-based study. Fortunately, the USDA agriculture census does collect data on how many acres are irrigated using center pivot systems. read more

With the use of center-pivot irrigation, nearly three million acres of land were irrigated in Kansas alone. At some places, during maximum extraction, the water table dropped more than five feet (1.5 m) per year. read more

There are many more irrigation techniques farmers use today, since there is always a need to find more efficient ways to use water for irrigation When we use water in our home, or when an industry uses water, about 90 percent of the water used is eventually returned to the environment where it replenishes water sources (water goes back into a stream or down into the ground) and can be used for other purposes. read more