Tyaughton Creek

Tyaughton Creek, formerly gazetted as the Tyaughton River, also historically known as Tyoax Creek, is a 50 kilometre tributary of British Columbia's Bridge River, flowing generally southeast to enter the main flow of that river about mid-way along the length of Carpenter Lake, a reservoir formed by Terzaghi Dam of the Bridge River Power Project.

The creek begins at Tyoax Pass, at the divide between the basins of the Bridge River and that of Big Creek, which is a tributary of the Chilcotin River. Its upper course flows east, then turns south and then southeast, entering a progressively deeper canyon until just northeast of Tyaughton Lake, which is connected to it by a short creek, and then turns east-southeast between Pearson Ridge (SW) and Marshall Ridge (NE) in a continuation of its canyon until it emerges as a side-inlet of Carpenter Lake which was formed by the creation of Carpenter Lake. That inlet is bridged at the mouth of that inlet by BC Highway 40, also known as the Lillooet-Gold Bridge Road or the Carpenter Lake Road. Before the lake's creation its outlet was at the lower side of the road, and it was bridged by the predecessor route, then known as the Bridge River Road.

Access to Tyaughton Creek is available from a series of secondary roads that run parallel to the creek upstream from where it passes Tyaughton Lake. Between Tyaughton Lake and its outlet into Carpenter Lake, however, the steep-sided gorges make for difficult and sometimes treacherous access on foot.

Tyaughton Creek's main tributaries are Liza Creek, Eldorado Creek, Noaxe Creek, Mud Creek and Relay Creek. Tyaughton, Eldorado and Relay Creeks all have their sources at passes along the northwestern boundary of the area known as the Spruce Lake Protected Area. The protected area has seen various park proposal names, including the Charlie Cunningham Wilderness and the Spruce Lake-Eldorado Mountain park, and most recently as the "South Chilcotin Provincial Park" but this status was downgraded from park to protected area in 2006.

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