La Vionnais
Based on OpenStreetMap data, La Vionnais is 3 km long.
La Vionnais is in France, flowing through the subregions of Ille-et-Vilaine
Map
osm.org Distributaries / Outflows
Tributaries
La Vionnais has 1 tributaries.
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La Rochère, which joins it at N 47° 46′ 53″, W 1° 52′ 16″ at OSM node
n986443187, and 3 km of total upstream flows in.