大筑波川

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大筑波川 flows into 安曇川 , which it joins at N 35° 21′ 9″, E 135° 59′ 13″ at OSM node n971623776, and there 260 km of total upstream flows in. load it's distributaries

大筑波川 has 1 tributaries.

• 小亀谷川, which joins it at N 35° 21′ 9″, E 135° 59′ 5″ at OSM node n971453889, and 2 km of total upstream flows in.
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