| Category | Rivers |
| Location | Turgon |
| Map | Vonassil |
This river's headwaters begin in the great swamp Coremeen. The river flows south from there, through the Ashemhorn valley towards Turgon's western coasts. Where it nears the ocean, it becomes a swampy delta littered with ancient elven ruins.
Cirathrin has black waters, darkened from the soot and chemicals coming out of the Turgon Aeries and dyed from decaying plants at its headwaters.