Klastline River in the context of "Mount Edziza Provincial Park"

The Big Raven Plateau is an intermontane plateau in Cassiar Land District of northwestern British Columbia, Canada. It lies on the Tahltan Highland and is surrounded by several valleys, including those of Mess Creek, Kakiddi Creek, Chakima Creek, Walkout Creek and the Klastline River. The plateau is drained by many small streams that flow into these neighbouring valleys and, unlike the neighbouring valleys, it is relatively barren of vegetation. Stream erosion has resulted in the creation of canyons with intervening ridges on the eastern and western sides of the Big Raven Plateau. The plateau is in Mount Edziza Provincial Park, which is one of the largest provincial parks in British Columbia. Access to the Big Raven Plateau is mainly by aircraft or by a network of horse trails from surrounding roads.

The Big Raven Plateau is volcanic in origin, consisting mostly of basaltic lava flows of the Mount Edziza volcanic complex that were erupted in the last 7.5 million years. These lava flows are interbedded with rhyolite and trachyte which are in the form of rock fragments produced and ejected by explosive eruptions. The dominant feature on the Big Raven Plateau is Mount Edziza, an ice-covered stratovolcano reaching an elevation of 2,786 metres (9,140 feet). Its composition is more diverse, consisting of alkali basalt, hawaiite, trachybasalt, tristanite, mugearite, benmoreite, trachyte and rhyolite which are in the form of lava flows, lava domes and breccia. The Big Raven Plateau is subdivided into at least 10 geological formations, each being the product of a distinct period of volcanic activity.

Kakiddi Creek is a tributary of the Klastline River in northwest part of the province of British Columbia, Canada. It flows north about 35 km (22 mi) through two lakes in a broad hummocky lowland to join the Klastline River, which in turn is a tributary of the Stikine River. Kakiddi Creek forms the northeastern boundary of Mount Edziza Provincial Park which lies within the traditional territory of the Tahltan people.

Kakiddi Creek's watershed covers 709 km (274 sq mi) and its estimated mean annual discharge is 11.5 m/s (410 cu ft/s). The mouth of Kakiddi Creek is located about 25 km (16 mi) west of Iskut, 44 km (27 mi) east of Telegraph Creek and about 77 km (48 mi) south-southwest of Dease Lake. Kakiddi Creek's watershed's land cover is classified as 46.6% conifer forest, 17.4% barren, 15.4% shrubland, 11.2% herbaceous, 5.4% snow/glacier, and small amounts of other cover.

Chakima Creek is a tributary of Shaman Creek and part of the Stikine River watershed in northwest part of the province of British Columbia, Canada. From its source in the mountains south of Mount Edziza, near Cartoona Peak and Tadeda Peak, it flows generally east for roughly 19 km (12 mi) to empty into Shaman Creek, which flows to Kakiddi Creek, a tributary of the Klastline River, which in turn is a tributary of the Stikine River.

Chakima Creek's mean annual discharge is estimated at 1.49 m/s (53 cu ft/s). Its watershed covers 100 km (39 sq mi), and is mostly within Mount Edziza Provincial Park. The watershed's land cover is classified as 45.7% conifer forest, 26.6% shrubland, 14.0% barren, 9.6% herbaceous, and small amounts of other cover.