The United States Deep Water Royalty Relief Act (DWRRA) implemented a royalty-relief program that relieves eligible leases from paying royalties on defined amounts of deep-water petroleum production over Federal Outer Continental Shelf lands. After its expiration in 2000, the DWRRA was redefined and extended to promote continued interest in deep water. The Minerals Management Service (MMS) defines a "deep-water" lease as having a minimum water depth of 200 meters (656 ft).