Spoiled Sea

The Spoiled Sea is an inland, freshwater sea in southern Yogoth. Fed by the polluted river Noxion, the sea is, as the name suggests, corrupted by toxic and magical effluvia from the factories of Tzal Umbros upriver.
A swampland known as the Stagmire, also poisoned, surrounds the sea. The sinking city of Tzal Stigmos is constructed on its shores and the Houses of Malady rests upon an island in the venomous waters.