Удай

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Удай flows into (unnamed) , which it joins at N 50° 35′ 39″, E 32° 43′ 37″ at OSM node n1373934152, and there 226 km of total upstream flows in. load it's distributaries

Удай has 2 tributaries.

• (unnamed) , which joins it at the following points: 142 km of total upstream flows in at N 50° 36′ 21″, E 32° 24′ 40″ at OSM node n1289830525 163 m of total upstream flows in at N 50° 36′ 21″, E 32° 24′ 40″ at OSM node n1289830525
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• Смош, which joins it at N 50° 38′ 55″, E 32° 34′ 10″ at OSM node n6029074423, and 20 km of total upstream flows in.
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