The float down is an annual event that takes place about this time of year. Back in the 1980s it was a huge event with thousands either participating in the water or watching from the sidelines. Then the Coast Guard put an end to the event for close to twenty years. Now the citizens of Port Huron are restarting the tradition and it seems to be getting larger each year.
The agencies I heard and observed when I went today included the Ira Twp. Fire Department, St. Clair Fire Department, Marine City Fire Department, Algonac Fire Department, Marysville Fire Department--all for their rescue boats--the Port Huron Fire Department for Chief 2, Rescue 1, Squad 1 and Rescue Craft 13, Tri-Hospital EMS with multiple rigs stationed along the shore, St. Clair County Sheriff Marine Division, Sarnia Police Boats, St. Clair County Sheriff Dive Team, Macomb County Sheriff Marine Division, Port Huron Police Bike Patrol, United States Boarder Patrol, United States Department of Homeland Security Helicopter and the United States Coast Guard with multiple vessels and their helicopter.
Anyone wishing to see pictures of the public safety vehicles from this event can see them at my website (see the url in my signature).