石保川

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石保川 flows into the sea: 4 km flows in at N 26° 42′ 30″, E 128° 8′ 38″ at OSM node n9213081547.

石保川 has 1 tributaries.

• 外堀田川, which joins it at N 26° 42′ 27″, E 128° 8′ 49″ at OSM node n695767845, and 3 km of total upstream flows in.
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