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"A modification of the basin plan, as applied to ground with considerable slope and consisting of hillside land, wherein f m is the main ditch on the highest side of the field, of which b c d e mark the boundaries. Its surface slopes in the direction of the arrows; o o and q q are "check levees," or slight embankments, built on level lines around the curved surfaces of the field. A supply ditch, i j, leads the water into the 'checks' or basins b c, o o, and q q, etc., and t w l is a waste ditch for discharging the surplus water from the checks when no longer needed." -Department of Agriculture

Irrigation by Checks

"A modification of the basin plan, as applied to ground with considerable slope and consisting of hillside…

"Irrigation by means of check levees for orchards on sloping hillsides (sectional view)." -Department of Agriculture

Irrigation with Check Levees

"Irrigation by means of check levees for orchards on sloping hillsides (sectional view)." -Department…