| Category | Rivers |
| Continent | Karterus |
| Region | Gulimbor |
| Map | Marninnoth |
The Mirush is an easterly flowing river situated in southern Gulimbor. It originates from the convergence of three smaller rivers traversing eastward through Battar-Sûn. As the river approaches the southeastern coastlines of Gulimbor, it is joined by the innumerable rivulets and streams descending from Tarmagân. Nearing the coast, the Mirush fans out into a delta before ultimately draining into the Sea of Mourning.