classic waka stream

even in this stream
crimson leaves are flowing down—
from the deep mountains
the water from melting snow
must now have greatly swelled

Meaning
Even in this river crimson leaves are flowing—the waters from melting snow in the deep mountains must now have grown stronger.
Commentary
Book Six Winter Poems

The poet is struck with surprise to see autumn leaves still flowing, though their season should have passed, and reflects on the cause.

The increased flow is attributed to snowmelt from the deep mountains. Although “water from melting snow” often suggests early spring, here it can be understood as winter snow that does not settle but melts and runs off, carrying the lingering leaves with it.
Author
Unknown Poet
Source
Kokin Wakashu
Other