Robert R Mason (Former Employee)
Science and Products
Filter Total Items: 51
Rating curve uncertainty: A comparison of estimation methods Rating curve uncertainty: A comparison of estimation methods
The USGS is engaged in both internal development and collaborative efforts to evaluate existing methods for characterizing the uncertainty of streamflow measurements (gaugings), stage-discharge relations (ratings), and, ultimately, the streamflow records derived from them. This paper provides a brief overview of two candidate methods that may be used to characterize the uncertainty of...
Authors
Mason, Julie E. Kiang, Timothy A. Cohn
Assessing inundation hazards to nuclear powerplant sites using geologically extended histories of riverine floods, tsunamis, and storm surges Assessing inundation hazards to nuclear powerplant sites using geologically extended histories of riverine floods, tsunamis, and storm surges
Most nuclear powerplants in the United States are near rivers, large lakes, or oceans. As evident from the Fukushima Daiichi, Japan, disaster of 2011, these water bodies pose inundation threats. Geologic records can extend knowledge of rare hazards from flooding, storm surges, and tsunamis. This knowledge can aid in assessing the safety of critical structures such as dams and energy...
Authors
Jim O’Connor, Brian F. Atwater, Timothy A. Cohn, Thomas M. Cronin, Mackenzie K. Keith, Christopher G. Smith, Mason
Using science to strengthen our Nation's resilience to tomorrow's challenges: understanding and preparing for coastal impacts Using science to strengthen our Nation's resilience to tomorrow's challenges: understanding and preparing for coastal impacts
Hurricane Sandy caused unprecedented damage across some of the most densely populated coastal areas of the northeastern United States. The costly, landscape-altering destruction left in the wake of this storm is a stark reminder of our Nation’s need to become more resilient as we inevitably face future coastal hazards. As our Nation recovers from this devastating natural disaster, it is...
Authors
Dale L. Simmons, Matthew E. Andersen, Teresa A. Dean, Michael J. Focazio, John W. Fulton, John W. Haines, Mason, Ann B. Tihansky, John A. Young
Estimating magnitude and frequency of floods using the PeakFQ 7.0 program Estimating magnitude and frequency of floods using the PeakFQ 7.0 program
Flood-frequency analysis provides information about the magnitude and frequency of flood discharges based on records of annual maximum instantaneous peak discharges collected at streamgages. The information is essential for defining flood-hazard areas, for managing floodplains, and for designing bridges, culverts, dams, levees, and other flood-control structures. Bulletin 17B (B17B) of...
Authors
Andrea G. Veilleux, Timothy A. Cohn, Kathleen M. Flynn, Mason, Paul R. Hummel
The USGS at Embudo, New Mexico: 125 years of systematic streamgaging in the United States The USGS at Embudo, New Mexico: 125 years of systematic streamgaging in the United States
John Wesley Powell, second Director of the U.S. Geological Survey, had a vision for the Western United States. In the late 1800s, Powell explored the West as head of the Geographical and Geological Survey of the Rocky Mountain Region. He devoted a large part of “Report on the Lands of the Arid Region of the United States with a more detailed account of the land of Utah with maps,” his...
Authors
Mark A. Gunn, Anne Marie Matherne, Mason
Calculating weighted estimates of peak streamflow statistics Calculating weighted estimates of peak streamflow statistics
According to the Federal guidelines for flood-frequency estimation, the uncertainty of peak streamflow statistics, such as the 1-percent annual exceedance probability (AEP) flow at a streamgage, can be reduced by combining the at-site estimate with the regional regression estimate to obtain a weighted estimate of the flow statistic. The procedure assumes the estimates are independent...
Authors
Timothy A. Cohn, Charles Berenbrock, Julie E. Kiang, Mason
Science and Products
Filter Total Items: 51
Rating curve uncertainty: A comparison of estimation methods Rating curve uncertainty: A comparison of estimation methods
The USGS is engaged in both internal development and collaborative efforts to evaluate existing methods for characterizing the uncertainty of streamflow measurements (gaugings), stage-discharge relations (ratings), and, ultimately, the streamflow records derived from them. This paper provides a brief overview of two candidate methods that may be used to characterize the uncertainty of...
Authors
Mason, Julie E. Kiang, Timothy A. Cohn
Assessing inundation hazards to nuclear powerplant sites using geologically extended histories of riverine floods, tsunamis, and storm surges Assessing inundation hazards to nuclear powerplant sites using geologically extended histories of riverine floods, tsunamis, and storm surges
Most nuclear powerplants in the United States are near rivers, large lakes, or oceans. As evident from the Fukushima Daiichi, Japan, disaster of 2011, these water bodies pose inundation threats. Geologic records can extend knowledge of rare hazards from flooding, storm surges, and tsunamis. This knowledge can aid in assessing the safety of critical structures such as dams and energy...
Authors
Jim O’Connor, Brian F. Atwater, Timothy A. Cohn, Thomas M. Cronin, Mackenzie K. Keith, Christopher G. Smith, Mason
Using science to strengthen our Nation's resilience to tomorrow's challenges: understanding and preparing for coastal impacts Using science to strengthen our Nation's resilience to tomorrow's challenges: understanding and preparing for coastal impacts
Hurricane Sandy caused unprecedented damage across some of the most densely populated coastal areas of the northeastern United States. The costly, landscape-altering destruction left in the wake of this storm is a stark reminder of our Nation’s need to become more resilient as we inevitably face future coastal hazards. As our Nation recovers from this devastating natural disaster, it is...
Authors
Dale L. Simmons, Matthew E. Andersen, Teresa A. Dean, Michael J. Focazio, John W. Fulton, John W. Haines, Mason, Ann B. Tihansky, John A. Young
Estimating magnitude and frequency of floods using the PeakFQ 7.0 program Estimating magnitude and frequency of floods using the PeakFQ 7.0 program
Flood-frequency analysis provides information about the magnitude and frequency of flood discharges based on records of annual maximum instantaneous peak discharges collected at streamgages. The information is essential for defining flood-hazard areas, for managing floodplains, and for designing bridges, culverts, dams, levees, and other flood-control structures. Bulletin 17B (B17B) of...
Authors
Andrea G. Veilleux, Timothy A. Cohn, Kathleen M. Flynn, Mason, Paul R. Hummel
The USGS at Embudo, New Mexico: 125 years of systematic streamgaging in the United States The USGS at Embudo, New Mexico: 125 years of systematic streamgaging in the United States
John Wesley Powell, second Director of the U.S. Geological Survey, had a vision for the Western United States. In the late 1800s, Powell explored the West as head of the Geographical and Geological Survey of the Rocky Mountain Region. He devoted a large part of “Report on the Lands of the Arid Region of the United States with a more detailed account of the land of Utah with maps,” his...
Authors
Mark A. Gunn, Anne Marie Matherne, Mason
Calculating weighted estimates of peak streamflow statistics Calculating weighted estimates of peak streamflow statistics
According to the Federal guidelines for flood-frequency estimation, the uncertainty of peak streamflow statistics, such as the 1-percent annual exceedance probability (AEP) flow at a streamgage, can be reduced by combining the at-site estimate with the regional regression estimate to obtain a weighted estimate of the flow statistic. The procedure assumes the estimates are independent...
Authors
Timothy A. Cohn, Charles Berenbrock, Julie E. Kiang, Mason