二保川

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二保川 flows into 土川 , which it joins at N 36° 39′ 5″, E 137° 12′ 42″ at OSM node n720773325, and there 28 km of total upstream flows in. load it's distributaries

二保川 has 3 tributaries.

• 常西合口用水, which joins it at N 36° 37′ 27″, E 137° 14′ 35″ at OSM node n720769945, and 9 km of total upstream flows in.
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• (unnamed), which joins it at N 36° 38′ 33″, E 137° 13′ 27″ at OSM node n720769807, and 1 km of total upstream flows in.
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• (unnamed), which joins it at N 36° 38′ 57″, E 137° 12′ 53″ at OSM node n720769686, and 762 m of total upstream flows in.
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