Question: Roaring Rapids is a river rapids ride located at Six Flags Magic Mountain in which state?
Context: Six Flags Magic Mountain is a 262 acre theme park located in the Santa Clarita, California neighborhood of Valencia, north of Los Angeles.  It opened on May 30, 1971, as Magic Mountain, a development of the Newhall Land and Farming Company.  In 1979, Six Flags purchased the park and added the name "Six Flags" to the park's title. Roman Rapids is a white-water river rapids ride located in Festa Italia of Busch Gardens Williamsburg, Virginia.  It is themed after a canal race through Roman ruins and leaves riders completely soaked after the ride. Roaring Rapids is a river rapids ride located at Six Flags Magic Mountain in Valencia, California, Six Flags Over Texas in Arlington, Texas and Six Flags Great America in Gurnee, Illinois. Thunder River is a river rapids ride operating at Six Flags Over Georgia in Austell, Georgia and Six Flags St. Louis in Eureka, Missouri.  Thunder River at Six Flags AstroWorld in Houston, Texas closed at the end of the 2005 season. The Gully Washer is an Intamin river rapids ride located in the "Crackaxle Canyon" section at Six Flags Fiesta Texas in San Antonio, Texas, since 1992. Ninja is an Arrow Dynamics/Vekoma steel roller coaster located in the Studio Backlot section of Six Flags St. Louis in Eureka, Missouri.  The ride features a loop, a sidewinder, and a double corkscrew.  It was originally built for and located at Expo '86 in Vancouver, B.C., operating as Scream Machine from May to October 1986.  It began operating as Ninja at Six Flags St. Louis in 1989.  The coaster was started by Arrow Dynamics, but when Arrow fell into bankruptcy, it was sold to Vekoma, who finished it.  The ride is formerly shared a name with Blue Hawk at Six Flags Over Georgia until that coaster's retheming in 2016.  Another roller coaster with the same name exists at Six Flags Magic Mountain, but that ride is an Arrow Dynamics suspended swinging coaster.  The Ninja, like most modern roller coasters, requires a minimum of two employees to dispatch the train.  One operates the main panel, which controls the restraints, gates, and has a section for the mechanics.  The other operator stands at the remote enable.  Both operators have to do an all clear sweep and thumbs up, then press their buttons at the same time. Roaring Rapids is a river rapids ride that is currently operating at Shanghai Disneyland.  The ride opened along with the rest of the park on June 16, 2016. The Thunder River Rapids Ride was a river rapid water ride located in the Town of Gold Rush section of Dreamworld on the Gold Coast, Australia.  It was recently Australia's only river rapids ride; however, a previous Rapids ride, The Snowy River Rampage operated at Wonderland Sydney. Tidal Wave is a Shoot-the-Chutes water ride at Six Flags Magic Mountain in Valencia, California.  The ride is located in the Movie District portion of the park.  The ride's theme is related to a tropical environment featuring several palms and trees.  The entrance to the ride is next to The Riddler's Revenge which is near to JB's Smokehouse BBQ.  The ride is open from the spring season to late September.  The ride temporarily closes in early October for Magic Mountain's annual Fright Fest event; the ride's line is used for a maze.  During the winter months, the ride is closed to drain the water and clean the ride along with the splash area.  The entrance to the Flash Pass is located at the right side exit of the ride.  The ride has two large boats which seat a maximum of 20 riders.  Both of the boats are typically used every day. Congo Rapids is a river rapids ride operating at Six Flags Great Adventure in Jackson, New Jersey.
Answer: California