This was the notice from the U.S. Forest Service:
The Superior National Forest is closing the Boundary Waters Canoe Area Wilderness, effective August 21, 2021, due to active and increasing fire activity, extreme drought, limited resources. The closure will be in place for seven days and may be modified or extended as conditions allow.
The Boundary Waters Canoe Area Wilderness stopped issuing entry permits Saturday, closing all land, water, trails, portages, campsites, canoe routes, and wilderness entry points until Aug. 27.
The Boundary Waters Canoe Area is within the Superior National Forest. The area is one of the most visited federally designated wilderness regions.
This closure includes all lands, waters, trails, portages, campsite, canoe routes, and Wilderness entry points in the Boundary Waters Canoe Area Wilderness.
The Forest has notified permit holders and outfitters and is canceling permits today through August 27. Permit holders will be fully reimbursed. At this time, all overnight paddle, day use, and motorized day use are canceled. The Forest will reopen portions of the Wilderness and for other uses when it is safe.
We did not make this decision lightly. We understand it will have significant impacts on business and our visitors. Thank you for your cooperation and understanding.