(unnamed)

(unnamed) is 7 km long, and has a stream level of 2.

Map of (unnamed)

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(unnamed) flows into 毗河 , which it joins at N 30° 47′ 9″, E 104° 8′ 48″ at OSM node n1586707975, and there 172 km of total upstream flows in.

(unnamed) has 1 tributaries.

九道堰, which joins it at N 30° 45′ 44″, E 104° 5′ 43″ at OSM node n5240817027, and 20 km of total upstream flows in.