Agricultural activities means, with respect to alluvial valley floors, the use of any tract of land for the production of animal or vegetable life, based on regional agricultural practices, where the use is enhanced or facilitated by subirrigation or flood irrigation. These uses include, but are not limited to, farming and the pasturing or grazing of livestock. These uses do not include agricultural activities which have no relationship to the availability of water from subirrigation or flood irrigation practices.
30 CFR § 701.5
As used in this chapter, the following terms have the specified meanings, except where otherwise indicated: