The River Hluseena is the largest river on Kalor, and on Lezaria as a whole. Its watershed makes up the entirety of the eastern part of the continent past the Thorndelle Mountains. The river makes up a border with Hannaderres and Hlaya on the west with Hluseenia on the east. Sometimes the river is distinguished by the terms Great Hluseena for the larger stretch between Hannaderres and Hluseenia, and Little Hluseena for the smaller tributary that forms the border between Hlaya and Hluseenia.