The Diamond Creek Fire was a wildfire in the Pasayten Wilderness, Okanogan County, Washington, that began with an improperly extinguished campfire on July 23, 2017.

[1][2][3] In July, the fire threatened historic cabins with destruction.

[4] On August 31, it spread to Canada in an area between Cathedral Provincial Park and Manning Provincial Park.

[5] On September 6, it grew beyond 100,000 acres to become a megafire.

The fire was contained on October 23, 2017.