Concentrations of Escherichia coli in streams in the upper Wabash River Watershed in Indiana, June-September 1998 /

by Silcox, Cheryl A., Voelker, David C., Willoughby, Timothy C.
Published 2000

Hydrogeologic atlas of aquifers in Indiana /

by Fenelon, Joseph M., Bobay, Keith E.
Published 1994

Quality of wet deposition in the Grand Calumet River Watershed, Northwestern Indiana, October 17, 1995-November 12, 1996 /

by Willoughby, Timothy C.
Published 2000

Hydraulic conductivity of the streambed, east branch Grand Calumet River, northern Lake County, Indiana /

by Duwelius, Richard F.
Published 1996

Quality of wet deposition in the Grand Calumet River Watershed, northwestern Indiana, April 29, 1997-April 28, 1998 /

by Willoughby, Timothy C.
Published 2000

Geohydrology and water quality of the Calumet aquifer, in the vicinity of the Grand Calumet River/Indiana Harbor Canal, northwestern Indiana /

by Fenelon, Joseph M., Watson, Lee R.
Published 1993

Quality of wet deposition in the Grand Calumet River watershed, northwestern Indiana, June 30, 1992-August 31, 1993 /

by Willoughby, Timothy C.
Published 1995

Water levels in the Calumet aquifer and their relation to surface-water levels in northern Lake County, Indiana, 1985-92 /

by Greeman, Theodore K.
Published 1995