Opening Weekend: Six Flags Hurricane Harbor, Concord

Six Flags Hurricane Harbor (formerly Waterworld) in Concord is probably the closest water park to Marin, and offers a wide array of water slides ranging from mild to extremely wild, along with Northern California's longest lazy river, a wave pool, and a kids' area.

Open daily mid-June through mid-August, and weekends in May (opens Saturday, May 20) and September.