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John D Gordon (Former Employee)

Science and Products

Filter Total Items: 13

Measuring U.S. Federal Agency progress toward implementation of alternative methods in toxicity testing Measuring U.S. Federal Agency progress toward implementation of alternative methods in toxicity testing

The U.S. Government Accountability Office (GAO) recommended to Congress that federal agencies establish a workgroup through ICCVAM to propose metrics for assessing progress on the development and promotion of alternative methods. This document describes the recommendations of the ICCVAM Metrics Workgroup.
Authors
John D. Gordon, Carol Clarke, Matthew Johnson, Emily N. Reinke, Barnett A. Rattner, Steve Hwang, Evisabel Craig, Anna Lowit, Paul Brown, Karen L. Davis-Bruno, Annabelle Crusan, Suzanne Fitzpatrick, Jueichuan Kang, Robin Levis, Donna L. Mendrick, Jill Merrill, Brian Berridge, Warren Casey, Nicole Kleinstreuer, Harold Watson
By
Ecosystems Mission Area, Water Resources Mission Area, Eastern Ecological Science Center, Oklahoma-Texas Water Science Center

Regional regression equations for estimation of four hydraulic properties of streams at approximate bankfull conditions for different ecoregions in Texas Regional regression equations for estimation of four hydraulic properties of streams at approximate bankfull conditions for different ecoregions in Texas

The U.S. Geological Survey, in cooperation with the U.S. Army Corps of Engineers, assessed statistical relations between hydraulic properties of streams at approximate bankfull conditions for different ecological regions (ecoregions) in Texas. Data from more than 103,000 records of measured discharge and ancillary hydraulic properties were assembled from summaries of discharge...
Authors
William H. Asquith, John D. Gordon, David S. Wallace
By
Oklahoma-Texas Water Science Center

Refining previous estimates of groundwater outflows from the Medina/Diversion Lake system, San Antonio area, Texas Refining previous estimates of groundwater outflows from the Medina/Diversion Lake system, San Antonio area, Texas

IntroductionIn 2016, the U.S. Geological Survey (USGS), in cooperation with the San Antonio Water System, began a study to refine previously derived estimates of groundwater outflows from Medina and Diversion Lakes in south-central Texas near San Antonio. When full, Medina and Diversion Lakes (hereinafter referred to as the Medina/Diversion Lake system) (fig. 1) impound approximately 255...
Authors
Richard N. Slattery, William H. Asquith, John D. Gordon
By
Water Resources Mission Area, Oklahoma-Texas Water Science Center

An overview of historical channel adjustment and selected hydraulic values in the Lower Sabine and Lower Brazos River Basins, Texas and Louisiana An overview of historical channel adjustment and selected hydraulic values in the Lower Sabine and Lower Brazos River Basins, Texas and Louisiana

The Sabine and Brazos are alluvial rivers; alluvial rivers are dynamic systems that adjust their geometry in response to changes in streamflow (discharge) and sediment load. In fluvial geomorphology, the term 'channel adjustment' refers to river channel changes in three geometric dimensions: (1) channel slope (profile); (2) the outline or shape, such as meandering or braided, projected...
Authors
Franklin T. Heitmuller, Lauren E. Greene, John D. John D. Gordon
By
Water Resources Mission Area, Oklahoma-Texas Water Science Center

Surface water-quality and water-quantity data from selected urban runoff-monitoring sites at the Rocky Mountain Arsenal, Commerce City, Colorado, water years 1988-2004 Surface water-quality and water-quantity data from selected urban runoff-monitoring sites at the Rocky Mountain Arsenal, Commerce City, Colorado, water years 1988-2004

The U.S. Geological Survey has monitored the quality and quantity of streamflow at the Rocky Mountain Arsenal (RMA) northeast of Denver, Colorado, since the early 1990s in cooperation with the U.S. Army. This report, prepared in cooperation with the U.S. Fish and Wildlife Service, documents existing surface-water-quality conditions on the RMA. All RMA water-quality data for the Irondale...
Authors
John D. Gordon, Donald E. Schild, Joseph P. Capesius, Cecil B. Slaughter
By
Water Resources Mission Area, Colorado Water Science Center, Oklahoma-Texas Water Science Center

External quality-assurance results for the national atmospheric deposition program/national trends network, 2000-2001 External quality-assurance results for the national atmospheric deposition program/national trends network, 2000-2001

Five external quality-assurance programs were operated by the U.S. Geological Survey for the National Atmospheric Deposition Program/National Trends Network (NADP/NTN) from 2000 through 2001 (study period): the intersite-comparison program, the blind-audit program, the field-audit program, the interlaboratory-comparison program, and the collocated-sampler program. Each program is...
Authors
Gregory A. Wetherbee, Natalie E. Latysh, John D. Gordon

External quality-assurance results for the National Atmospheric Deposition Program/National Trends Network, 1997-99 External quality-assurance results for the National Atmospheric Deposition Program/National Trends Network, 1997-99

Five external quality-assurance programs were operated by the U.S. Geological Survey for the National Atmospheric Deposition Program/ National Trends Network (NADP/NTN) during 1997 through 1999: the intersite-comparison program, the blind-audit program, the field- audit program, the interlaboratory-comparison program, and the collocated-sampler program. The intersite-comparison program...
Authors
John D. Gordon, Natalie E. Latysh, Sandy J. Lindholm

Evaluation of candidate rain gages for upgrading precipitation measurement tools for the National Atmospheric Deposition Program Evaluation of candidate rain gages for upgrading precipitation measurement tools for the National Atmospheric Deposition Program

The National Atmospheric Deposition Program (NADP) was established in 1977 to investigate atmospheric deposition and its effects on the environment. Since its establishment, precipitation records have been obtained at all NADP sites using a gage developed approximately 50 years ago-the Belfort 5-780 mechanical rain gage. In 1998 and 1999, a study was done by the U.S. Geological Survey to...
Authors
John D. Gordon

Laboratory performance in the Sediment Laboratory Quality-Assurance Project, 1996-98 Laboratory performance in the Sediment Laboratory Quality-Assurance Project, 1996-98

This report describes the results of the first 3 years of an ongoing study of sediment laboratories used by the U.S. Geological Survey (USGS). The sediment laboratories currently in operation constitute the entire USGS national laboratory system for sediment analyses. As with all environmental data, physical sediment data can be expected to contain a certain amount of difference, whether...
Authors
John D. Gordon, Carla A. Newland, Shane T. Gagliardi

U.S. Geological Survey Quality-Assurance Project for Sediment Analysis U.S. Geological Survey Quality-Assurance Project for Sediment Analysis

Introduction Sediment is derived primarily from natural weathering of rock and is an assemblage of individual mineral grains that are then deposited by some physical agent, such as water, wind, ice, or gravity (Fetter, 1988). The U.S. Geological Survey (USGS) samples sediments and collects data on the amount of sediment in selected waterways. The most pressing sediment-related problems...
Authors
John D. Gordon, Carla Newland

External quality-assurance results for the National Atmospheric Deposition Program/National Trends Network, 1995-96 External quality-assurance results for the National Atmospheric Deposition Program/National Trends Network, 1995-96

The U.S. Geological Survey operated four external quality-assurance programs for the National Atmospheric Deposition Program/National Trends Network (NADP/NTN) in 1995 and 1996: the intersite-comparison program, the blind-audit program, the interlaboratory- comparison program, and the collocated-sampler program. The intersite-comparison program assessed the precision and bias of pH and...
Authors
John D. Gordon
By
Water Resources Mission Area

USGS ensures quality of acid rain network USGS ensures quality of acid rain network

No abstract available.
Authors
Mark A. Nilles, John D. Gordon
USGS science for a changing world logo

myScience: USGS Citizen Science Project Discovery & Public Engagement Web Application

How can the public discover opportunities for participation in USGS scientific research? What citizen science projects are currently active within the USGS? How may PIs increase public engagement in and awareness of their citizen science projects? To address these questions, a web application leveraging existing Community for Data Integration (CDI) and USGS work was created to allow...
By
Community for Data Integration (CDI)
myScience: USGS Citizen Science Project Discovery & Public Engagement Web Application

myScience: USGS Citizen Science Project Discovery & Public Engagement Web Application

How can the public discover opportunities for participation in USGS scientific research? What citizen science projects are currently active within the USGS? How may PIs increase public engagement in and awareness of their citizen science projects? To address these questions, a web application leveraging existing Community for Data Integration (CDI) and USGS work was created to allow unprecedented
Learn More

Science and Products

Filter Total Items: 13

Measuring U.S. Federal Agency progress toward implementation of alternative methods in toxicity testing Measuring U.S. Federal Agency progress toward implementation of alternative methods in toxicity testing

The U.S. Government Accountability Office (GAO) recommended to Congress that federal agencies establish a workgroup through ICCVAM to propose metrics for assessing progress on the development and promotion of alternative methods. This document describes the recommendations of the ICCVAM Metrics Workgroup.
Authors
John D. Gordon, Carol Clarke, Matthew Johnson, Emily N. Reinke, Barnett A. Rattner, Steve Hwang, Evisabel Craig, Anna Lowit, Paul Brown, Karen L. Davis-Bruno, Annabelle Crusan, Suzanne Fitzpatrick, Jueichuan Kang, Robin Levis, Donna L. Mendrick, Jill Merrill, Brian Berridge, Warren Casey, Nicole Kleinstreuer, Harold Watson
By
Ecosystems Mission Area, Water Resources Mission Area, Eastern Ecological Science Center, Oklahoma-Texas Water Science Center

Regional regression equations for estimation of four hydraulic properties of streams at approximate bankfull conditions for different ecoregions in Texas Regional regression equations for estimation of four hydraulic properties of streams at approximate bankfull conditions for different ecoregions in Texas

The U.S. Geological Survey, in cooperation with the U.S. Army Corps of Engineers, assessed statistical relations between hydraulic properties of streams at approximate bankfull conditions for different ecological regions (ecoregions) in Texas. Data from more than 103,000 records of measured discharge and ancillary hydraulic properties were assembled from summaries of discharge...
Authors
William H. Asquith, John D. Gordon, David S. Wallace
By
Oklahoma-Texas Water Science Center

Refining previous estimates of groundwater outflows from the Medina/Diversion Lake system, San Antonio area, Texas Refining previous estimates of groundwater outflows from the Medina/Diversion Lake system, San Antonio area, Texas

IntroductionIn 2016, the U.S. Geological Survey (USGS), in cooperation with the San Antonio Water System, began a study to refine previously derived estimates of groundwater outflows from Medina and Diversion Lakes in south-central Texas near San Antonio. When full, Medina and Diversion Lakes (hereinafter referred to as the Medina/Diversion Lake system) (fig. 1) impound approximately 255...
Authors
Richard N. Slattery, William H. Asquith, John D. Gordon
By
Water Resources Mission Area, Oklahoma-Texas Water Science Center

An overview of historical channel adjustment and selected hydraulic values in the Lower Sabine and Lower Brazos River Basins, Texas and Louisiana An overview of historical channel adjustment and selected hydraulic values in the Lower Sabine and Lower Brazos River Basins, Texas and Louisiana

The Sabine and Brazos are alluvial rivers; alluvial rivers are dynamic systems that adjust their geometry in response to changes in streamflow (discharge) and sediment load. In fluvial geomorphology, the term 'channel adjustment' refers to river channel changes in three geometric dimensions: (1) channel slope (profile); (2) the outline or shape, such as meandering or braided, projected...
Authors
Franklin T. Heitmuller, Lauren E. Greene, John D. John D. Gordon
By
Water Resources Mission Area, Oklahoma-Texas Water Science Center

Surface water-quality and water-quantity data from selected urban runoff-monitoring sites at the Rocky Mountain Arsenal, Commerce City, Colorado, water years 1988-2004 Surface water-quality and water-quantity data from selected urban runoff-monitoring sites at the Rocky Mountain Arsenal, Commerce City, Colorado, water years 1988-2004

The U.S. Geological Survey has monitored the quality and quantity of streamflow at the Rocky Mountain Arsenal (RMA) northeast of Denver, Colorado, since the early 1990s in cooperation with the U.S. Army. This report, prepared in cooperation with the U.S. Fish and Wildlife Service, documents existing surface-water-quality conditions on the RMA. All RMA water-quality data for the Irondale...
Authors
John D. Gordon, Donald E. Schild, Joseph P. Capesius, Cecil B. Slaughter
By
Water Resources Mission Area, Colorado Water Science Center, Oklahoma-Texas Water Science Center

External quality-assurance results for the national atmospheric deposition program/national trends network, 2000-2001 External quality-assurance results for the national atmospheric deposition program/national trends network, 2000-2001

Five external quality-assurance programs were operated by the U.S. Geological Survey for the National Atmospheric Deposition Program/National Trends Network (NADP/NTN) from 2000 through 2001 (study period): the intersite-comparison program, the blind-audit program, the field-audit program, the interlaboratory-comparison program, and the collocated-sampler program. Each program is...
Authors
Gregory A. Wetherbee, Natalie E. Latysh, John D. Gordon

External quality-assurance results for the National Atmospheric Deposition Program/National Trends Network, 1997-99 External quality-assurance results for the National Atmospheric Deposition Program/National Trends Network, 1997-99

Five external quality-assurance programs were operated by the U.S. Geological Survey for the National Atmospheric Deposition Program/ National Trends Network (NADP/NTN) during 1997 through 1999: the intersite-comparison program, the blind-audit program, the field- audit program, the interlaboratory-comparison program, and the collocated-sampler program. The intersite-comparison program...
Authors
John D. Gordon, Natalie E. Latysh, Sandy J. Lindholm

Evaluation of candidate rain gages for upgrading precipitation measurement tools for the National Atmospheric Deposition Program Evaluation of candidate rain gages for upgrading precipitation measurement tools for the National Atmospheric Deposition Program

The National Atmospheric Deposition Program (NADP) was established in 1977 to investigate atmospheric deposition and its effects on the environment. Since its establishment, precipitation records have been obtained at all NADP sites using a gage developed approximately 50 years ago-the Belfort 5-780 mechanical rain gage. In 1998 and 1999, a study was done by the U.S. Geological Survey to...
Authors
John D. Gordon

Laboratory performance in the Sediment Laboratory Quality-Assurance Project, 1996-98 Laboratory performance in the Sediment Laboratory Quality-Assurance Project, 1996-98

This report describes the results of the first 3 years of an ongoing study of sediment laboratories used by the U.S. Geological Survey (USGS). The sediment laboratories currently in operation constitute the entire USGS national laboratory system for sediment analyses. As with all environmental data, physical sediment data can be expected to contain a certain amount of difference, whether...
Authors
John D. Gordon, Carla A. Newland, Shane T. Gagliardi

U.S. Geological Survey Quality-Assurance Project for Sediment Analysis U.S. Geological Survey Quality-Assurance Project for Sediment Analysis

Introduction Sediment is derived primarily from natural weathering of rock and is an assemblage of individual mineral grains that are then deposited by some physical agent, such as water, wind, ice, or gravity (Fetter, 1988). The U.S. Geological Survey (USGS) samples sediments and collects data on the amount of sediment in selected waterways. The most pressing sediment-related problems...
Authors
John D. Gordon, Carla Newland

External quality-assurance results for the National Atmospheric Deposition Program/National Trends Network, 1995-96 External quality-assurance results for the National Atmospheric Deposition Program/National Trends Network, 1995-96

The U.S. Geological Survey operated four external quality-assurance programs for the National Atmospheric Deposition Program/National Trends Network (NADP/NTN) in 1995 and 1996: the intersite-comparison program, the blind-audit program, the interlaboratory- comparison program, and the collocated-sampler program. The intersite-comparison program assessed the precision and bias of pH and...
Authors
John D. Gordon
By
Water Resources Mission Area

USGS ensures quality of acid rain network USGS ensures quality of acid rain network

No abstract available.
Authors
Mark A. Nilles, John D. Gordon
USGS science for a changing world logo

myScience: USGS Citizen Science Project Discovery & Public Engagement Web Application

How can the public discover opportunities for participation in USGS scientific research? What citizen science projects are currently active within the USGS? How may PIs increase public engagement in and awareness of their citizen science projects? To address these questions, a web application leveraging existing Community for Data Integration (CDI) and USGS work was created to allow...
By
Community for Data Integration (CDI)
myScience: USGS Citizen Science Project Discovery & Public Engagement Web Application

myScience: USGS Citizen Science Project Discovery & Public Engagement Web Application

How can the public discover opportunities for participation in USGS scientific research? What citizen science projects are currently active within the USGS? How may PIs increase public engagement in and awareness of their citizen science projects? To address these questions, a web application leveraging existing Community for Data Integration (CDI) and USGS work was created to allow unprecedented
Learn More
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