Book excerpt: The freshwater lacustrine environment of the Uteland Butte member of the lower Green River Formation in the eastern part of Utah’s Uinta Basin was correlated and mapped from outcrop to the subsurface using lithofacies and sequence-stratigraphic boundaries from four major flooding events. The study area extends from the outcrop on the western side of the Douglas Creek Arch, where lake-margin sediments occur, to cores from the Greater Natural Buttes natural gas field in central Uintah County, where sublittoral facies are predominant.