3-16-08 BH 14, photo by heypat.

This photo is part of Patrick’s 2008 ICE Flows Lake St Clair set.

Check out more ice jam action on Lake St. Clair from Michigan in Pictures. It’s an annual sign of spring, and in one of the posts, Spike explained this phenomenon:

The ice starts as a sheet on the lake’s surface, forming with days of sub-freezing temperatures. Strong winds crack the ice and break it into large floating pieces. Then the winds push the ice until it hits something to stop it… in this case, the Michigan shoreline.