Updated 5/18/13 Paddleboarding in the Fox River at Riverfront Park in Algonquin is a great place to take off from. This area of the river is a No Wake zone. You would only head north on the Fox River as just a short distance south of this park is the Algonquin Dam. There are benches, a drinking fountain and ample parking (except f0r Thursday night concert dates). For public restrooms one would have to go to Cornish Park which is just south of Algonquin Road.
Go on Thursday evenings when the Algonquin Summer Concert Series are scheduled and paddle around the boats that are anchored while listening to the muscians in the pavillion. For 2013 the concert in the park dates are: June 27th, July 4th, 11th, 18th, 25th, and August 1st and 8th. The concerts start at 7:30pm, but we recommend you get there early to get a parking spot as the concerts draw a large crowd. Riverfront Park is at 201 North Harrison Street just north of IL Route 62 / Algonquin Road and east of IL Route 31.