Истра

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Истра flows into Воря , which it joins at N 55° 2′ 19″, E 35° 6′ 56″ at OSM node n504601264, and there 530 km of total upstream flows in. load it's distributaries

Истра has 2 tributaries.

• Желонья, which joins it at N 55° 6′ 55″, E 35° 16′ 36″ at OSM node n1925107942, and 29 km of total upstream flows in.
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• Бобрянка, which joins it at N 55° 6′ 31″, E 35° 15′ 16″ at OSM node n773924990, and 4 km of total upstream flows in.
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