The approximately 700 ha sized stretches north-west of Mainz between the urban districts of Mombach, Gonsenheim, Finthen and the municipalities of Budenheim and Heidesheim am Rhein in the district of Mainz-Bingen.
A foot passenger and bicycle ferry operates across the Rhine between Walluf and the Budenheim quay.
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In the south, the Rhine forms the boundary with the community of Budenheim (Mainz-Bingen in Rhineland-Palatinate).