There are going to be a few areas in the Boundary Water's that are closed early this season. However, the Superior National Forest will be working to open up more of the campsites and portages and plan to update their maps accordingly.
A few of the campsites will need extensive work that may require keeping them closed all season. The closures include 13 of the 46 campsites on popular Lake Insula, while only two of 11 campsites are due to be open on Lake Isabella. The Forest Service also has lowered the number of permits it's issuing for six entry points into the BWCA, including the popular Lake One entry.
Keep up to date on the progress by checking the maps at this link.