Ox Bow Marina where boaters and homeowners alike enjoy a Polynesian paradise tucked away from the hassles of everyday life. Activities include boating, fishing, and water sports or just relaxing with a cool one.Oxbow Marina is located on the picturesque Georgiana Slough in the middle of Northern California's Sacramento/San Joaquin River Delta. Oxbow Marina is sheltered and provides protection from current and wind. In addition to the marina, 95 homes are located along the harbor.