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  • FR: Upper Rhine surface water bodies defined by the Water Framework Directive 2016, with a catchment area > 10km² DE: Upper Rhine surface water bodies defined by the Water Framework Directive 2016, with a catchment area > 10km² CH : Water bodies of the Upper Rhine with a division equivalent to the criteria of the Water Framework Directive, as the Directive does not apply in Switzerland (water bodies with a catchment area > 10 km² from the SwissTLMRegio Hydrography)