Roland W. Tollett

• Effects of hardened low-water crossings on stream habitat, water quality, and periphyton in four streams at the Fort Polk Military Reservation, Vernon Parish, Louisiana, October 1998 through November 1999
• Quality of water from shallow wells in the rice-growing area in southwestern Louisiana, 1999 through 2001
• Quality of water in domestic wells in the Wilcox Aquifer in northwestern Louisiana and east-central Texas, December 2003-September 2004
• Water-quality data and description of biota for selected watersheds of the Limited Use Area, Vernon Ranger District, Kisatchie National Forest, Louisiana, September 1996 through March 1997
• Water-quality data and descriptions of biota for selected watersheds of the Limited Use Area, Vernon Ranger District, Kisatchie National Forest, Louisiana, September 1996 through March 1997