In the year 1965, the rivers Twiste, Diemel and Weser flooded the area and caused millions in damage; consequently, the Hessische Wasserverband Diemel was founded on 12 September 1969 as a water management agency.

In 1972, construction started on the dam of the Twistetal reservoir, more than 20 metres high. Its primary purpose was flood control, but the plans of the water management agency also took into account that such a body of water would make a fine recreational area.

And so it is that Twistesee lake does not just offer protection from flooding; it also provides opportunities for a wide range of leisure activities.

Furthermore, free WiFi is offered at four different locations: at the Reisemobilhafen, at the Café im See, at the lido and at the Twistesee lake Vorstau.