J. S. Havens (compiler) 1994 This report summarizes the activities of the Oklahoma District, Water Resources Division, U.S. Geological Survey, for fiscal years 1991-92. Included are summary statements of current and recently completed projects. The focus of water- resources studies has changed as awareness of the vulnerability of water resources to contamination has joined continuing concern for long-term water supplies for all needs and prediction of and protection from catastrophic flooding. application/pdf 10.3133/ofr9438 en U.S. Geological Survey ; U.S.G.S. Earth Science Information Center, Open-File Reports Section [distributor], Oklahoma; a summary of activities of the U.S. Geological Survey, Water Resources Division in fiscal years 1991-92 reports