Frog Island is a 5.0 acre park on the Huron River just north of Riverside Park, between Cross Street and Forest Avenue. Frog Island has a small amphitheater at the southern end, a soccer field and running track in the middle, and a community garden maintained by the adjacent neighborhoods at the north end.
Frog Island is connected to Riverside Park via the "tridge", a three-pointed bridge at the south end of the park.
