 As an artificial lake, Auesee has no inflow or outflow, and is fed exclusively by groundwater.The formation of Auesee was initiated as a partnership between the municipality of Wesel and the excavating company Hülskens & Co.Negotiations began in 1959, and resulted in an agreement that the company would remove gravel from the site to use in their gravel pit, and the city would fill in the resulting pit to form a bathing lake.