Data are not available for Alaska or the Pacific Basin. Data for Puerto Rico and the U.S. Virgin Islands are aggregated by 6-digit hydrologic unit. Irrigation data are only collected from cropland and pastureland. NRI maps reflect national patterns rather than site- specific information. Noncultivated cropland includes permanent hayland and horticultural cropland.
Water is supplied to crops by ditches, pipes, or other conduits.
Pastureland may consist of a single species in a pure stand, a grass mixture or a grass-legume mixture. Management usually consists of cultural treatments-fertilization, weed control, reseeding, or renovation and control of grazing. Please include the Product ID you are inquiring about. If you use our analysis products, please be aware of our disclaimer .