Approximate - nearest available gauge. Use as general reference only.
After several class IV rapids a class V+ rapid that was dubbed Four Doors during the flow study. While this rapid is potentially runnable, no one during the flow study ran this rapid in its entirety. The current feeds directly into an ugly sieve piton spot which is followed by a bigger sieve.
Boaters can portage on either right or left. The right side portage is reported to require some technical rock climbing. The portage on the left is reported to be an easy walk with a 15 foot rappel at the end.
The video below shows Darin McQuid running this rapid in fall of 2009 around 500 to 600 cfs. The move from left to right to avoid the sieves looks dangerous
Four Doors on the Poe Run of the North Fork Feather from Daniel Brasuell on Vimeo.