For reference only but it will give you some idea as to how much snow is currently available for spring run off. Here is the Ski Reports for Michigan, Wisconsin and Minnesota, one has to remember that alot of the snow at these resorts is man made. It gives current base conditions and depths it is probably packed at those depths making for alot more water run off when it melts.

http://www.onthesnow.com/michigan/skireport.html

Wisconsin snow reports!

http://www.onthesnow.com/wisconsin/skireport.html

Minnesota Snow Report!

http://www.onthesnow.com/minnesota/skireport.html