It begins in the Boundary Ranges of the Coast Mountains roughly 40 kilometres (25 mi) from the Alaskan border and flows south until it meets the Iskut River, immediately east of Mount Verrett.

It is remote, short, and hardly documented, and is found in an isolated part of the Cassiar Land District, east of Stikine.

[1] The headwaters of the Verrett River are several unnamed glacier-fed lakes in the central Boundary Ranges immediately east of Alaska and north of the Iskut River.

[citation needed] The entire length of the river is found in the mountainous forests of northern British Columbia, which are home to many species of evergreen trees and ferns.

[citation needed] The Verrett River is a part of a large ecosystem important to anadromous fish species.