(unnamed)

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(unnamed) flows into La Somme , which it joins at N 49° 58′ 51″, E 2° 4′ 10″ at OSM node n1020283501, and there 2 km of total upstream flows in. load it's distributaries

(unnamed) has 2 tributaries.

• L'Eauette, which joins it at N 49° 58′ 44″, E 2° 4′ 24″ at OSM node n1020283635, and 896 m of total upstream flows in.
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• Fossé Hédin, which joins it at N 49° 58′ 50″, E 2° 4′ 11″ at OSM node n1020284362, and 349 m of total upstream flows in.
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