The north of the Copalis National Wildlife Refuge is also a bit east, as are a few cities and sites, as Kalaloch, Queets, Taholah, Point Grenville (a headland), Moclips, and Pacific Beach.

The canyon is dynamic area where humans do not detect massive submarine landslides which occur on its steep side walls, and the bottom collects sediment deposited from above.

Quinault Canyon is 25 kilometres (16 mi) from shore,[4] and is 378 square nautical miles in area.

[1] It also serves as a conduit for dense, cold, nutrient-rich seawater pulling toward shore, where upwelling feeds surface productivity at the base of the food web.

[10] Due to productive topographically induced upwelling that occurs, Quinault Canyon is important for many fish, invertebrate, and whales.