Total : 39 people have been injured , 3 of them critically . NEW : 80,000 people typically visit the park during the Fourth of July weekend . `` We ask nonresidents to avoid the area because of the road closures and the presence of emergency crews trying to clear debris from the roadways , '' Sargent added . NEW : Wayne County 's typical population is about 500 . Grantsburg , Washburn , Danbury and Web Lake were among the hardest hit .
Total : 39 people have been injured , 3 of them critically . NEW : 80,000 people typically visit the park during the Fourth of July weekend . NEW : Wayne County 's typical population is about 500 . Grantsburg , Washburn , Danbury and Web Lake were among the hardest hit .