The Termina River is a major river found on the eastern edge of Impatria, defining the Province's border with the neighboring Towerfirth. Its source is found in the Skyfract Mountains northeast of Brazenhollow, flowing southward into Palprofundia and into the Deep Marsh. Lake Interim is found in its southern reaches, just south of Firthedge.
While the Termina is large enough for boats, the Deep Marsh prevents any access to the Sea of Kings and prevents its use in transport. The Termina instead only serves as a natural border between Provinces and a source of fresh water to locals.