John F Walker (Former Employee)
Science and Products
Filter Total Items: 42
Measuring groundwater-surface water interaction and its effect on wetland stream benthic productivity, Trout Lake watershed, northern Wisconsin, USA Measuring groundwater-surface water interaction and its effect on wetland stream benthic productivity, Trout Lake watershed, northern Wisconsin, USA
Measurements of groundwater-surface water exchange at three wetland stream sites were related to patterns in benthic productivity as part of the US Geological Survey's Northern Temperate Lakes-Water, Energy and Biogeochemical Budgets (NTL-WEBB) project. The three sites included one high groundwater discharge (HGD) site, one weak groundwater discharge (WGD) site, and one groundwater...
Authors
R. J. Hunt, M. Strand, J.F. Walker
Effects of best-management practices in Otter Creek in the Sheboygan River Priority Watershed, Wisconsin, 1990-2002 Effects of best-management practices in Otter Creek in the Sheboygan River Priority Watershed, Wisconsin, 1990-2002
The U.S. Geological Survey and the Wisconsin Department of Natural Resources began a comprehensive, multidisciplinary evaluation-monitoring program in 1989 to assess the effectiveness of the Wisconsin Nonpoint Source Program. Hydrologic, water-quality, habitat, and fish data were collected at Otter Creek from 1990 to 2002 with the pre-BMP (best-management practice) period ending in...
Authors
Steven R. Corsi, John F. Walker, Lizhu Wang, Judy A. Horwatich, Roger T. Bannerman
Bridge scour monitoring methods at three sites in Wisconsin Bridge scour monitoring methods at three sites in Wisconsin
Of the nearly 11,500 bridges in Wisconsin, 89 have been assessed with critical scour conditions. The U.S. Geological Survey, in cooperation with the Wisconsin Department of Transportation, the Marathon County Highway Department, and the Jefferson County Highway Department, performed routine monitoring of streambed elevations for three bridges. Two monitoring approaches were employed: (1)...
Authors
John F. Walker, Peter E. Hughes
Variability of isotope and major ion chemistry in the Allequash Basin, Wisconsin Variability of isotope and major ion chemistry in the Allequash Basin, Wisconsin
As part of ongoing research conducted at one of the U.S. Geological Survey's Water, Energy, and Biogeochem-ical Budgets sites, work was undertaken to describe the spatial and temporal variability of stream and ground water isotopic composition and cation chemistry in the Trout Lake watershed, to relate the variability to the watershed flow system, and to identify the linkages of...
Authors
John F. Walker, Randall J. Hunt, Thomas D. Bullen, David P. Krabbenhoft, Carol Kendall
Effects of best-management practices in the Black Earth Creek Priority Watershed, Wisconsin, 1984-98 Effects of best-management practices in the Black Earth Creek Priority Watershed, Wisconsin, 1984-98
The Wisconsin Department of Natural Resources and the U.S. Geological Survey began a comprehensive, multidisciplinary evaluation-monitoring program in 1989 to assess the effectiveness of the Wisconsin Nonpoint Source Program. Hydrologic and water-quality data were collected at Brewery and Garfoot Creeks in 1984 and 1985 (pre-best-management practices (BMPs) period) and 1997 and 1998...
Authors
David J. Graczyk, John F. Walker, J.A. Horwatich, Roger T. Bannerman
Flood-frequency characteristics of Wisconsin streams Flood-frequency characteristics of Wisconsin streams
Flood-frequency characteristics for 312 gaged sites on Wisconsin streams are presented for recurrence intervals of 2 to 100 years using flood-peak data collected through water year 2000. Equations of the relations between flood-frequency and drainage-basin characteristics were developed by multiple-regression analyses. Flood-frequency characteristics for ungaged sites on unregulated...
Authors
John F. Walker, William R. Krug
Science and Products
Filter Total Items: 42
Measuring groundwater-surface water interaction and its effect on wetland stream benthic productivity, Trout Lake watershed, northern Wisconsin, USA Measuring groundwater-surface water interaction and its effect on wetland stream benthic productivity, Trout Lake watershed, northern Wisconsin, USA
Measurements of groundwater-surface water exchange at three wetland stream sites were related to patterns in benthic productivity as part of the US Geological Survey's Northern Temperate Lakes-Water, Energy and Biogeochemical Budgets (NTL-WEBB) project. The three sites included one high groundwater discharge (HGD) site, one weak groundwater discharge (WGD) site, and one groundwater...
Authors
R. J. Hunt, M. Strand, J.F. Walker
Effects of best-management practices in Otter Creek in the Sheboygan River Priority Watershed, Wisconsin, 1990-2002 Effects of best-management practices in Otter Creek in the Sheboygan River Priority Watershed, Wisconsin, 1990-2002
The U.S. Geological Survey and the Wisconsin Department of Natural Resources began a comprehensive, multidisciplinary evaluation-monitoring program in 1989 to assess the effectiveness of the Wisconsin Nonpoint Source Program. Hydrologic, water-quality, habitat, and fish data were collected at Otter Creek from 1990 to 2002 with the pre-BMP (best-management practice) period ending in...
Authors
Steven R. Corsi, John F. Walker, Lizhu Wang, Judy A. Horwatich, Roger T. Bannerman
Bridge scour monitoring methods at three sites in Wisconsin Bridge scour monitoring methods at three sites in Wisconsin
Of the nearly 11,500 bridges in Wisconsin, 89 have been assessed with critical scour conditions. The U.S. Geological Survey, in cooperation with the Wisconsin Department of Transportation, the Marathon County Highway Department, and the Jefferson County Highway Department, performed routine monitoring of streambed elevations for three bridges. Two monitoring approaches were employed: (1)...
Authors
John F. Walker, Peter E. Hughes
Variability of isotope and major ion chemistry in the Allequash Basin, Wisconsin Variability of isotope and major ion chemistry in the Allequash Basin, Wisconsin
As part of ongoing research conducted at one of the U.S. Geological Survey's Water, Energy, and Biogeochem-ical Budgets sites, work was undertaken to describe the spatial and temporal variability of stream and ground water isotopic composition and cation chemistry in the Trout Lake watershed, to relate the variability to the watershed flow system, and to identify the linkages of...
Authors
John F. Walker, Randall J. Hunt, Thomas D. Bullen, David P. Krabbenhoft, Carol Kendall
Effects of best-management practices in the Black Earth Creek Priority Watershed, Wisconsin, 1984-98 Effects of best-management practices in the Black Earth Creek Priority Watershed, Wisconsin, 1984-98
The Wisconsin Department of Natural Resources and the U.S. Geological Survey began a comprehensive, multidisciplinary evaluation-monitoring program in 1989 to assess the effectiveness of the Wisconsin Nonpoint Source Program. Hydrologic and water-quality data were collected at Brewery and Garfoot Creeks in 1984 and 1985 (pre-best-management practices (BMPs) period) and 1997 and 1998...
Authors
David J. Graczyk, John F. Walker, J.A. Horwatich, Roger T. Bannerman
Flood-frequency characteristics of Wisconsin streams Flood-frequency characteristics of Wisconsin streams
Flood-frequency characteristics for 312 gaged sites on Wisconsin streams are presented for recurrence intervals of 2 to 100 years using flood-peak data collected through water year 2000. Equations of the relations between flood-frequency and drainage-basin characteristics were developed by multiple-regression analyses. Flood-frequency characteristics for ungaged sites on unregulated...
Authors
John F. Walker, William R. Krug