[3] Tennaya Creek is in Mount Edziza Provincial Park and the Tenh Dẕetle Conservancy, both of which lie within the traditional territory of the Tahltan people.

[1][4][5][6] Tennaya Creek originates from the eastern slope of Mount Edziza, a massive glaciated mountain in the middle of the Big Raven Plateau.

[2][4][8][9] At the head of Tennaya Creek are four active cirques exposing the internal structure of Ice Peak, an eroded stratovolcano predating the main edifice of Mount Edziza.

The source of these lava flows was originally thought to be The Neck, but radiometric dating of this volcanic plug suggests that it formed during the emplacement of the older Ice Peak Formation.

A nearly 1 km (0.62 mi) wide and 60–120 m (200–390 ft) thick trachyte flow of the Kakiddi Formation forms a flat interfluve between the lower reaches of Sorcery and Tennaya creeks.

[1][10] Prior to the creation of the Tenh Dẕetle Conservancy in 2021, Tennaya Creek was located in the Mount Edziza Recreation Area which was disestablished in 2003.