长洪河

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长洪河 flows into (unnamed) , which it joins at N 31° 52′ 42″, E 120° 58′ 47″ at OSM node n4493694784, and there 4 km of total upstream flows in. load it's distributaries

长洪河 has 3 tributaries.

• 谷东村北横河, which joins it at N 31° 53′ 50″, E 120° 58′ 50″ at OSM node n4493694782, and 5 km of total upstream flows in.
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• 谷东村南横河, which joins it at N 31° 53′ 20″, E 120° 58′ 50″ at OSM node n5258969344, and 1 km of total upstream flows in.
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• (unnamed), which joins it at N 31° 53′ 50″, E 120° 58′ 50″ at OSM node n4493694782, and 492 m of total upstream flows in.
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