Surface-water quality changes after 5 years of nutrient management in the Little Conestoga Creek headwaters, Pennsylvania, 1989-91

by Koerkle, Edward H.
Published: U.S. Dept. of the Interior, U.S. Geological Survey ; Branch of Information Services [distributor], 1997

Surface-water quality changes after 5 years of nutrient management in the Little Conestoga Creek headwaters, Pennsylvania, 1989-91

by Koerkle, Edward H.,
Published: U.S. Geological Survey, 1997

Evaluation of agricultural best-management practices in the Conestoga River headwaters, Pennsylvania : hydrology of a small carbonate site near Ephrata, Pennsylvania, prior to impl...

by Koerkle, Edward H.,
Published: U.S. Geological Survey, 1996

Evaluation of agricultural best-management practices in the Conestoga River headwaters, Pennsylvania : effects of nutrient management on water quality in the Little Conestoga Creek...

by Koerkle, Edward H.,
Published: U.S. Geological Survey, 1996

Trends in surface-water quality during implementation of best-management practices in Mill Creek and Muddy Run basins, Lancaster County, Pennsylvania

by Koerkle, Edward H.
Published: U.S. Dept. of the Interior, U.S. Geological Survey, 2000

Evaluation of agricultural best-management practices in the Conestoga River headwaters, Pennsylvania : hydrology of a small carbonate site near Ephrata, Pennsylvania, prior to impl...

Rev. May 1997.

Published: U.S. Dept. of the Interior, U.S. Geological Survey ; Branch of Information Services [distributor], 1997

Evaluation of agricultural best-management practices in the Conestoga River Headwaters, Pennsylvania : effects of nutrient management on water quality in the Little Conestoga Creek...

Published: U.S. Dept. of the Interior, U.S. Geological Survey : Earth Science Information Center, Open-File Reports Section [distributor], 1996

Evaluation of agricultural best-management practices in the Conestoga River Headwaters, Pennsylvania : effects of nutrient management on quality of surface runoff at a small carbon...

by Hall, David W.,
Published: U.S. Geological Survey, 1997

Herbicide concentrations in and loads transported by the Conestoga River and Pequea Creek, Lancaster County, Pennsylvania, 1992-95

by Reed, Lloyd A.,
Published: U.S. Geological Survey, 1997

Herbicide concentrations in and loads transported by the Conestoga River and Pequea Creek, Lancaster County, Pennsylvania, 1992-95

by Reed, Lloyd A.
Published: U.S. Dept. of the Interior, U.S. Geological Survey ; Branch of Information Services [distributor], 1997

Relations of biological indicators to nutrient data for lakes and streams in Pennsylvania and West Virginia, 1990-98

by Brightbill, Robin A.
Published: U.S. Dept. of the Interior, U.S. Geological Survey ; U.S. Geological Survey, Branch of Information Services [distributor], 2003

Simulation of streamflow and water quality in the White Clay Creek Subbasin of the Christina River Basin, Pennsylvania and Delaware, 1994-1998

by Senior, Lisa A.
Published: U.S. Dept. of the Interior, U.S. Geological Survey ; U.S. Geological Survey, Branch of Information Services [distributor], 2003

Simulation of streamflow and water quality in the Red Clay Creek subbasin of the Christina River basin, Pennsylvania and Delaware

by Senior, Lisa A.
Published: U.S. Dept. of the Interior, U.S. Geological Survey, 2003

Simulation of streamflow and water quality in the Christina River subbasin and overview of simulations in other subbasins of the Christina River basin, Pennsylvania, Maryland, and...

by Senior, Lisa A.
Published: U.S. Dept. of the Interior, U.S. Geological Survey, 2003

Estimation of baseline daily mean streamflows for ungaged locations on Pennsylvania streams, water years 1960-2008

by Stuckey, Marla H.
Published: U.S. Dept. of the Interior, U.S. Geological Survey, 2012

Simulation of streamflow and water quality in the Brandywine Creek subbasin of the Christina River basin, Pennsylvania and Delaware, 1994-98

by Senior, Lisa A.
Published: U.S. Dept. of the Interior, U.S. Geological Survey ; U.S. Geological Survey, Branch of Information Services [distributor], 2003