Yumegawa River

Yumegawa River is the longest river on the plane of Kamigawa, and an important source of blue mana.
==Description==
While the source of the Yumegawa is far distant from the known lands, the very long Yumegawa feeds into the Kamitaki Falls and Lake, and passes on past Kawabe Province and onto the sea. Minamo, the wizard academy for humans, is perched on a cliff straddling the river and the falls, while Otawara floats in the clouds above the lake.