A benthic-macroinvertebrate index of biotic integrity and assessment of conditions in selected streams in Chester County, Pennsylvania, 1998-2009 /

by Reif, Andrew G.
Published 2012

Groundwater-quality monitoring program in Chester County, Pennsylvania, 1980-2008 /

by Senior, Lisa A.
Published 2010

Effects of flood controls proposed for West Branch Brandywine Creek, Chester County, Pennsylvania /

by Sloto, Ronald A.
Published 1988

Low-flow statistics of selected streams in Chester County, Pennsylvania /

by Schreffler, Curtis L.
Published 1998

Assessment of stream quality using biological indices at selected sites in the Delaware River basin, Chester County, Pennsylvania, 1981-97 /

by Reif, Andrew G.
Published 2002

Assessment of stream quality using biological indices at selected sites in the Brandywine Creek basin, Chester County, Pennsylvania, 1981-97 /

by Reif, Andrew G.
Published 2002

Assessment of stream quality using biological indices at selected sites in the Schuylkill River basin, Chester County, Pennsylvania, 1981-97 /

by Reif, Andrew G.
Published 2002

Assessment of stream quality using biological indices at selected sites in the Red Clay and White Clay Creek basins, Chester County, Pennsylvania, 1981-97 /

by Reif, Andrew G.
Published 2002

Geohydrology and simulation of ground-water flow in the carbonate rocks of the Valley Creek basin, eastern Chester County, Pennsylvania /

by Sloto, Ronald A.
Published 1990

Radon-222 in the ground water of Chester County, Pennsylvania /

by Senior, Lisa A.
Published 1998

Hydrogeology and water quality of the West Valley Creek Basin, Chester County, Pennsylvania /

by Senior, Lisa A., Sloto, Ronald A., Reif, Andrew G.
Published 1997

Drought-trigger ground-water levels and analysis of historical water-level trends in Chester County, Pennsylvania /

by Schreffler, Curtis L.
Published 1999

Effects of urbanization on storm-runoff volume and peak discharge of Valley Creek, eastern Chester County, Pennsylvania /

by Sloto, Ronald A.
Published 1988

Effect of urbanization on the water resources of eastern Chester County, Pennsylvania /

by Sloto, Ronald A.
Published 1987

Geohydrology and simulation of ground-water flow in the Red Clay Creek Basin, Chester County, Pennsylvania, and New Castle County, Delaware /

by Vogel, Karen L., Reif, Andrew G.
Published 1993

Land use, organochlorine compound concentrations, and trends in benthic-invertebrate communities in selected stream basins in Chester County, Pennsylvania /

by Hardy, Mark A., Wetzel, Kim L., Moore, Craig R.
Published 1995