Same in the west slope of Colorado. So much water is used to grow alfalfa, in part because there is a “use it or lose it” water rights policy:
> Failure to apply a water right to beneficial use when water was available for a period of ten or more years results in a rebuttable presumption of abandonment.
This leads to huge amounts of wasted water and alfalfa growing.
https://dwr.colorado.gov/services/water-administration/water...