La Somme

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La Somme flows into La Somme Rivière , which it joins at N 49° 50′ 29″, E 3° 17′ 55″ at OSM node n2931581494, and there 20 km of total upstream flows in. load it's distributaries

La Somme has 2 tributaries.

• (unnamed), which joins it at N 49° 50′ 39″, E 3° 18′ 5″ at OSM node n10185549956, and 11 km of total upstream flows in.
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• La Somme Rivière, which joins it at N 49° 50′ 39″, E 3° 18′ 5″ at OSM node n2931581828, and 10 km of total upstream flows in.
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