A fully automated land irrigation system to irrigate regular and irregular shapes of land. The system includes a water deliver pipe assembly configured to travel laterally while irrigating adjacent to a stationary row of spaced access valves supplied by a water main. The system includes a single coupler automated connector to automatically supply water to the water delivery pipe assembly. The connector includes a swing arm pivotably mounted to and hydraulically connected to the water delivery pipe assembly, a valve coupler mounted to the swing arm to selectively access water from the water main via the spaced access valves and a water conveyance to operably flow water between the valve coupler and the swing arm. The valve coupler includes a vertical coupler travel configured to provide essentially vertical travel of the valve coupler relative to the swing arm.