There are several excellent locations to put your kayak or canoe in either the Red Cedar River or the Grand River. Kruger Landing at Aurelius Road is a popular spot and Crego Park is a great place to paddle around a small lake. Crego also offers assisted entry with its kayak/canoe lift. The Middle Grand River Organization of Watersheds (MGROW) maintains a list of access points on the Grand River.
You can also go through a livery service such as River Town Adventures and they will take care of everything but the paddling.