MSU Wave forms on the Red Cedar River as it runs through Michigan State's East Lansing campus, breaking over a low-head dam that's been left partially broken down. It only comes in a handful of days a year, when river levels spike enough to push a short but genuinely fun play wave over the structure. The eddies are good when it's working, but you'll want a reliable roll, since the banks flood out and the downstream exit gets tricky fast. Keep an eye on gauge levels in spring if you want a shot at catching it in.