John F Walker (Former Employee)
Science and Products
Filter Total Items: 42
Evaluation of nonpoint-source contamination, Wisconsin; selected streamwater-quality data, land-use and best-management practices inventory, and quality assurance and quality control, water year 1993 Evaluation of nonpoint-source contamination, Wisconsin; selected streamwater-quality data, land-use and best-management practices inventory, and quality assurance and quality control, water year 1993
The objective of the watershed-management evaluation monitoring program in Wisconsin is to evaluate the effectiveness of the best-management practices (BMPs) for rural streams, urban streams, and urban storm sewers. This report is an annual summary of the data collected for the program and a report of the results from several different special studies conducted within this program...
Authors
Steven R. Corsi, John F. Walker, D.J. Graczyk, S.R. Greb, D.W. Owens, K.F. Rappold
Statistical Techniques for Assessing water‐quality effects of BMPs Statistical Techniques for Assessing water‐quality effects of BMPs
Little has been published on the effectiveness of various management practices in small rural lakes and streams at the watershed scale. In this study, statistical techniques were used to test for changes in water‐quality data from watersheds where best management practices (BMPs) were implemented. Reductions in data variability due to climate and seasonality were accomplished through the...
Authors
John F. Walker
Methods for measuring discharge under ice cover Methods for measuring discharge under ice cover
Streamflow-velocity adjustment coefficients at several common vertical positions varied significantly from station to station and from measurement to measurement at some stations. The ice-cover roughness was the primary factor affecting the profiles at most stations. Several discharge-measurement procedures were developed using one-half of the data collected, and the accuracy of the...
Authors
J.F. Walker
Evaluation of nonpoint-source contamination, Wisconsin: Selected data for 1992 water year Evaluation of nonpoint-source contamination, Wisconsin: Selected data for 1992 water year
This report presents the annual results of the U.S. Geological Survey's (USGS) watershed-management evaluation monitoring program in Wisconsin. The overall objective of each individual project in the program is to determine if the water chemistry in the receiving stream has changed as a result of the implementation of land-management practices in the watershed. This is accomplished...
Authors
D.J. Graczyk, J.F. Walker, S.R. Greb, Steven R. Corsi, D.W. Owens
Techniques for detecting effects of urban and rural land-use practices on stream-water chemistry in selected watersheds in Texas, Minnesota,and Illinois Techniques for detecting effects of urban and rural land-use practices on stream-water chemistry in selected watersheds in Texas, Minnesota,and Illinois
Although considerable effort has been expended during the past two decades to control nonpoint-source contamination of streams and lakes in urban and rural watersheds, little has been published on the effectiveness of various management practices at the watershed scale. This report presents a discussion of several parametric and nonparametric statistical techniques for detecting changes...
Authors
J.F. Walker
Preliminary evaluation of effects of best management practices in the Black Earth Creek, Wisconsin, priority watershed Preliminary evaluation of effects of best management practices in the Black Earth Creek, Wisconsin, priority watershed
Nonpoint-source contamination accounts for a substantial part of the water quality problems in many watersheds. The Wisconsin Nonpoint Source Water Pollution Abatement Program provides matching money for voluntary implementation of various best management practices (BMPs). The effectiveness of BMPs on a drainage-basin scale has not been adequately assessed in Wisconsin by use of data...
Authors
J.F. Walker, D.J. Graczyk
Science and Products
Filter Total Items: 42
Evaluation of nonpoint-source contamination, Wisconsin; selected streamwater-quality data, land-use and best-management practices inventory, and quality assurance and quality control, water year 1993 Evaluation of nonpoint-source contamination, Wisconsin; selected streamwater-quality data, land-use and best-management practices inventory, and quality assurance and quality control, water year 1993
The objective of the watershed-management evaluation monitoring program in Wisconsin is to evaluate the effectiveness of the best-management practices (BMPs) for rural streams, urban streams, and urban storm sewers. This report is an annual summary of the data collected for the program and a report of the results from several different special studies conducted within this program...
Authors
Steven R. Corsi, John F. Walker, D.J. Graczyk, S.R. Greb, D.W. Owens, K.F. Rappold
Statistical Techniques for Assessing water‐quality effects of BMPs Statistical Techniques for Assessing water‐quality effects of BMPs
Little has been published on the effectiveness of various management practices in small rural lakes and streams at the watershed scale. In this study, statistical techniques were used to test for changes in water‐quality data from watersheds where best management practices (BMPs) were implemented. Reductions in data variability due to climate and seasonality were accomplished through the...
Authors
John F. Walker
Methods for measuring discharge under ice cover Methods for measuring discharge under ice cover
Streamflow-velocity adjustment coefficients at several common vertical positions varied significantly from station to station and from measurement to measurement at some stations. The ice-cover roughness was the primary factor affecting the profiles at most stations. Several discharge-measurement procedures were developed using one-half of the data collected, and the accuracy of the...
Authors
J.F. Walker
Evaluation of nonpoint-source contamination, Wisconsin: Selected data for 1992 water year Evaluation of nonpoint-source contamination, Wisconsin: Selected data for 1992 water year
This report presents the annual results of the U.S. Geological Survey's (USGS) watershed-management evaluation monitoring program in Wisconsin. The overall objective of each individual project in the program is to determine if the water chemistry in the receiving stream has changed as a result of the implementation of land-management practices in the watershed. This is accomplished...
Authors
D.J. Graczyk, J.F. Walker, S.R. Greb, Steven R. Corsi, D.W. Owens
Techniques for detecting effects of urban and rural land-use practices on stream-water chemistry in selected watersheds in Texas, Minnesota,and Illinois Techniques for detecting effects of urban and rural land-use practices on stream-water chemistry in selected watersheds in Texas, Minnesota,and Illinois
Although considerable effort has been expended during the past two decades to control nonpoint-source contamination of streams and lakes in urban and rural watersheds, little has been published on the effectiveness of various management practices at the watershed scale. This report presents a discussion of several parametric and nonparametric statistical techniques for detecting changes...
Authors
J.F. Walker
Preliminary evaluation of effects of best management practices in the Black Earth Creek, Wisconsin, priority watershed Preliminary evaluation of effects of best management practices in the Black Earth Creek, Wisconsin, priority watershed
Nonpoint-source contamination accounts for a substantial part of the water quality problems in many watersheds. The Wisconsin Nonpoint Source Water Pollution Abatement Program provides matching money for voluntary implementation of various best management practices (BMPs). The effectiveness of BMPs on a drainage-basin scale has not been adequately assessed in Wisconsin by use of data...
Authors
J.F. Walker, D.J. Graczyk