| Category | Rivers |
| Continent | Karterus |
| Region | Gulimbor |
| Map | Marninnoth |
Mirush is a easterly flowing river of southern Gulimbor. It begins at the joining of three smaller rivers that flow east through Battar-Sûn. Near the southeastern coasts of Gulimbor, the river is joined by the countless rivulets and streams coming off Tarmagân. Mirush becomes a delta as it nears the coast and then drains into the Sea of Mourning.