These hydrology, circulation and water chemistry data were collected in Gulf of Mexico. Data collected as part of Continental Shelf Circulation, Biloxi Bay Hydrology, and St. Louis Bay Hydrology projects was submitted on three diskettes which accompanied three publications by Dr. Charles K. Eleuterius. These publications which are cited below are held by the NOAA Central Library, Silver Spring, Maryland. (1) Circulation on the Continental Shelf Between 87 Deg W and 90 Deg W with Data Appendix Charles K. Eleuterius, Ph.D. and G. Alan Criss August 1994 Final Report, Volume 1 University of Southern Mississippi, Gulf Coast Research Laboratory Physical Oceanography prepared for the Mineral Management Service, USDI 55 pp. (2) Biloxi Bay Hydrology and Selected Chemistry with Data Appendix Charles K. Eleuterius, Ph.D. and G. Alan Criss August 1994 Final Report, Volume 2 University of Southern Mississippi, Gulf Coast Research Laboratory Physical Oceanography prepared for the Minerals Management Service, USDI 15 pp. (3) St. Louis Bay Hydrography and Selected Chemistry with Data Appendix Charles K. Eleuterius, Ph.D. and G. Alan Criss August 1994 Final Report, Volume 3 University of Southern Mississippi, Gulf Coast Research Laboratory Physical Oceanography prepared for the Minerals Management Service, USDI 15 pp.