洪塘河

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洪塘河 flows into 洋河 , which it joins at N 40° 42′ 57″, E 114° 45′ 19″ at OSM node n4590341038, and there 595 km of total upstream flows in. load it's distributaries

洪塘河 has 4 tributaries.

• 水沟口河, which joins it at N 40° 28′ 27″, E 114° 27′ 15″ at OSM node n4647464582, and 35 km of total upstream flows in.
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• 南九场河, which joins it at N 40° 34′ 33″, E 114° 37′ 41″ at OSM node n4647465088, and 22 km of total upstream flows in.
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• (unnamed) , which joins it at the following points: 4 km of total upstream flows in at N 40° 25′ 35″, E 114° 21′ 21″ at OSM node n4647464832 6 km of total upstream flows in at N 40° 25′ 35″, E 114° 21′ 21″ at OSM node n4647464832
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• 半沟沙河, which joins it at N 40° 35′ 36″, E 114° 39′ 24″ at OSM node n6683351425, and 7 km of total upstream flows in.
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