Abstract: A device which is neural networked with other such devices to control the irrigation of various irrigation zones. Each neural networked irrigation controller commences irrigation for its zone, provided sufficient water is available, either when a preselected period of time arrives or sensed zonal conditions so dictate. The determination of adequacy of water in the source forms the basis for neural networking. Each controller senses water level or pressure in the source and has its own initial water threshold value—a level or pressure at which irrigation will be permitted to commence. Optionally, each controller may have its own terminal water threshold value—a level or pressure which must be maintained in order for irrigation of the zone to continue. Thus, the controllers communicate hydraulically with one another.