Gregory C Johnson

• Hydrologic data of two wetlands at Spring City, Tennessee, December 1991 through November 1992
• Phosphorus in streams of the upper Tennessee River basin, 1970-93
• Shallow ground-water quality adjacent to burley tobacco fields in northeastern Tennessee and southwestern Virginia, Spring 1997
• Water quality of springs in the Valley and Ridge Physiographic Province in the upper Tennessee River basin, 1997