Ground-Water Hydrology and Geology near the July 1974 Phenol Spill at Lake Beulah, Walworth County, Wisconsin Groundwater Data and Resources SR04 Ground-Water Hydrology and Geology Near the July 1974 Phenol Spill at Lake Beulah, Walworth County, Wisconsin Borman, R.G.; 1975 Report: 13 p. Download Related Collections Special Report View Special Report