IAU descriptor term
Flumina in the Solar System
Flumen is the term planetary geologists use for a channel that carries, or once carried, a liquid. 11 named features carry it, across 1 of the 14 mapped worlds, the largest being Kokytos Flumina on Titan at 305 km.
Where they are
The largest flumina anywhere
Ranked across every mapped world, by catalogued diameter.
What they are named after
Naming themes are set per world, so one descriptor can draw on very different sources depending on where it sits. Across all 11 flumina, 7 categories appear.
Greek4Norse2Hebrew1Jewish1Mesopotamian1Aztec1Hindu1