古川

古川 is 4 km long, and has a stream level of 0.

Map of 古川

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古川 flows into the sea: 5 km flows in at N 36° 45′ 36″, E 137° 12′ 42″ at OSM node n720795104.

古川 has 1 tributaries.

(unnamed), which joins it at N 36° 44′ 25″, E 137° 11′ 59″ at OSM node n8994707519, and 875 m of total upstream flows in.