荒井沢

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荒井沢 flows into 道志川 , which it joins at N 35° 33′ 10″, E 139° 9′ 2″ at OSM node n1047820554, and there 141 km of total upstream flows in. load it's distributaries

荒井沢 has 1 tributaries.

• 湯口沢, which joins it at N 35° 32′ 51″, E 139° 8′ 55″ at OSM node n1047805739, and 464 m of total upstream flows in.
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