A DNR fisheries manager says organic material washed into Big Sandy Lake by last month's flood helped deplete the lake's oxygen during the hot weather and led to the die-off of some species of fish. The heat has also caused a number of fish kills in southern Minnesota lakes. Officials say fish populations are resilient and should bounce back.
Flooding shuts down one of MN's most-visited state parks
Nearly every trail is inaccessible at this point.