Section XVI-3: System of levees, drains, and ditches and irrigation.

  The Legislature shall have power and shall provide for a system
of levees, drains, and ditches and of irrigation in this State
when deemed expedient, and provide for a system of taxation on
the lands affected or benefited by such levees, drains, and
ditches and irrigation, or on crops produced on such land, to
discharge such bonded indebtedness or expenses necessarily
incurred in the establishment of such improvements; and to
provide for compulsory issuance of bonds by the owners or lessees
of the lands benefited or affected by such levees, drains, and
ditches or irrigation.