Seth Siefken
Seth Siefken is a civil engineer based in Helena, Montana.
Seth has been working with USGS since fall 2018, where his projects have included flood frequency analysis, water quality monitoring, writing software, and data collection in the field. He is the surface water specialist for the Wyoming-Montana Water Science Center and is the maintainer of the PeakFQ software program (see Webtools to access).
Professional Experience
U.S. Geological Survey, Wyoming-Montana Water Science Center, 2018-current
Education and Certifications
M.S. Civil Engineering, Colorado State University, Fort Collins, CO, 2019
B.S. Civil Engineering, Montana State University, Bozeman, MT, 2017 (minor in Mathematics)
Seth is a licensed professional engineer in Montana.
Science and Products
Filter Total Items: 30
Peak Flow Frequency R EXtensions Peak Flow Frequency R EXtensions
R tools to assist with peak-flow frequency analysis using the USGS PeakFQ software.
Peak-flow frequency analyses for selected streamgages in and near Powell County, Montana, based on data through water year 2019 Peak-flow frequency analyses for selected streamgages in and near Powell County, Montana, based on data through water year 2019
The USGS Wyoming-Montana Water Science Center (WY-MT WSC) completed a report (Sando and McCarthy, 2018) documenting methods for peak-flow frequency analysis following implementation of the Bulletin 17C guidelines. The methods are used to provide estimates of peak-flow quantiles for 66.7-, 50-, 42.9-, 20-, 10-, 4-, 2-, 1-, 0.5-, and 0.2-percent annual exceedance probabilities (AEPs) for...
Peak-flow frequency analyses for selected streamgages in and near the Milk River Basin, Montana, based on data through water year 2018, Part 1 Peak-flow frequency analyses for selected streamgages in and near the Milk River Basin, Montana, based on data through water year 2018, Part 1
The USGS Wyoming-Montana Water Science Center (WY?MT WSC) completed a report (Sando and McCarthy, 2018) documenting methods for peak-flow frequency analysis following implementation of the Bulletin 17C guidelines. The methods are used to provide estimates of peak-flow quantiles for 50-, 42.9-, 20-, 10-, 4-, 2-, 1-, 0.5-, and 0.2-percent annual exceedance probabilities (AEPs) for selected
Channel geometry for upstream and downstream cross sections at selected bridge sites in Montana, 2020 Channel geometry for upstream and downstream cross sections at selected bridge sites in Montana, 2020
The U.S. Geological Survey, in cooperation with the Montana Department of Transportation (MDT), collected cross-section data on the upstream and downstream sides at selected bridges in Montana during the 2020 calendar year. The purpose of the data collection is to determine if scour and channel instability occur in the vicinity of the bridge structures. Data were processed, analyzed, and...
Flow-Conditioned Parameter Grids for the Contiguous United States: A Pilot, Seamless Basin Characteristic Dataset Flow-Conditioned Parameter Grids for the Contiguous United States: A Pilot, Seamless Basin Characteristic Dataset
Abstract To aid in parameterization of mechanistic, statistical, and machine learning models of hydrologic systems in the contiguous United States (CONUS), flow-conditioned parameter grids (FCPGs) have been generated describing upstream basin mean elevation, slope, land cover class, latitude, and 30-year climatologies of mean total annual precipitation, minimum daily air temperature, and...
Peak-flow frequency analyses for selected streamgages in Carbon County, Montana, based on data through water year 2018 Peak-flow frequency analyses for selected streamgages in Carbon County, Montana, based on data through water year 2018
The USGS Wyoming-Montana Water Science Center (WY-MT WSC) documented (Sando and McCarthy, 2018) methods for peak-flow frequency analysis following implementation of the Bulletin 17C guidelines. The methods are used to provide estimates of peak-flow quantiles for 50-, 42.9-, 20-, 10-, 4-, 2-, 1-, 0.5-, and 0.2-percent annual exceedance probabilities (AEPs) for selected streamgages...
Seth is the maintainer of the peakfq sofware package. Below is access to the PeakFQ web application that utilizes this software.
Science and Products
Filter Total Items: 30
Peak Flow Frequency R EXtensions Peak Flow Frequency R EXtensions
R tools to assist with peak-flow frequency analysis using the USGS PeakFQ software.
Peak-flow frequency analyses for selected streamgages in and near Powell County, Montana, based on data through water year 2019 Peak-flow frequency analyses for selected streamgages in and near Powell County, Montana, based on data through water year 2019
The USGS Wyoming-Montana Water Science Center (WY-MT WSC) completed a report (Sando and McCarthy, 2018) documenting methods for peak-flow frequency analysis following implementation of the Bulletin 17C guidelines. The methods are used to provide estimates of peak-flow quantiles for 66.7-, 50-, 42.9-, 20-, 10-, 4-, 2-, 1-, 0.5-, and 0.2-percent annual exceedance probabilities (AEPs) for...
Peak-flow frequency analyses for selected streamgages in and near the Milk River Basin, Montana, based on data through water year 2018, Part 1 Peak-flow frequency analyses for selected streamgages in and near the Milk River Basin, Montana, based on data through water year 2018, Part 1
The USGS Wyoming-Montana Water Science Center (WY?MT WSC) completed a report (Sando and McCarthy, 2018) documenting methods for peak-flow frequency analysis following implementation of the Bulletin 17C guidelines. The methods are used to provide estimates of peak-flow quantiles for 50-, 42.9-, 20-, 10-, 4-, 2-, 1-, 0.5-, and 0.2-percent annual exceedance probabilities (AEPs) for selected
Channel geometry for upstream and downstream cross sections at selected bridge sites in Montana, 2020 Channel geometry for upstream and downstream cross sections at selected bridge sites in Montana, 2020
The U.S. Geological Survey, in cooperation with the Montana Department of Transportation (MDT), collected cross-section data on the upstream and downstream sides at selected bridges in Montana during the 2020 calendar year. The purpose of the data collection is to determine if scour and channel instability occur in the vicinity of the bridge structures. Data were processed, analyzed, and...
Flow-Conditioned Parameter Grids for the Contiguous United States: A Pilot, Seamless Basin Characteristic Dataset Flow-Conditioned Parameter Grids for the Contiguous United States: A Pilot, Seamless Basin Characteristic Dataset
Abstract To aid in parameterization of mechanistic, statistical, and machine learning models of hydrologic systems in the contiguous United States (CONUS), flow-conditioned parameter grids (FCPGs) have been generated describing upstream basin mean elevation, slope, land cover class, latitude, and 30-year climatologies of mean total annual precipitation, minimum daily air temperature, and...
Peak-flow frequency analyses for selected streamgages in Carbon County, Montana, based on data through water year 2018 Peak-flow frequency analyses for selected streamgages in Carbon County, Montana, based on data through water year 2018
The USGS Wyoming-Montana Water Science Center (WY-MT WSC) documented (Sando and McCarthy, 2018) methods for peak-flow frequency analysis following implementation of the Bulletin 17C guidelines. The methods are used to provide estimates of peak-flow quantiles for 50-, 42.9-, 20-, 10-, 4-, 2-, 1-, 0.5-, and 0.2-percent annual exceedance probabilities (AEPs) for selected streamgages...
Seth is the maintainer of the peakfq sofware package. Below is access to the PeakFQ web application that utilizes this software.