The Tijonara River originates in the Tijonara Mountains, flowing through the expansive plains of Senti territory before merging with the Arla River in Lake Tijonara. While technically referred to as a lake, Lake Tijonara functions more as a delta where the two rivers converge, creating a lush and biodiverse wetland.

The Tijonara River has been a vital resource for the Senti Tribe for centuries and a focal point of cultural and ecological significance. However, its history is also marked by conflict during the Beta Age, leading to its current status as a protected zone under the Peace Treaty of the Gamma Age.