Peter M McCarthy
Peter McCarthy is a Hydrologist for the Wyoming-Montana Water Science Center.
Peter's aims are to better understand streamflow statistics, streamflow responses to climate change, and to improve communication of USGS science to stakeholders and the public through improved web applications, tools, and software. He is the National StreamStats coordinator and the Water Mission Area Model Support Function Manager and works with hydrologists, web developer, and geospatial experts to ensure that tools, data, software, and web applications meet the needs of the USGS, stakeholders, and public.
Professional Experience
2017 to present, National StreamStats Coordinator, Wyoming-Montana Water Science Center, Helena, MT
2003-2017, Hydrologist, Wyoming-Montana Water Science Center, Helena, MT
Education and Certifications
B.A. Mathematics-Carroll College
B.S. Civil Engineering-Montana State University
M.S. Civil Engineering-Colorado State University
Science and Products
South Carolina Streams Stats: Phase 2
Building a framework to compute continuous grids of basin characteristics for the conterminous United States
Developing a "fire-aware" stream gage network by integrating USGS enterprise databases
StreamStats: Streamflow Statistics and Spatial Analysis Tools for Water-Resources Applications
Transportation-Related Water Projects
National Streamflow Statistics Program: Known Issues
National Streamflow Statistics Application: Regional Regression Equation Publications by State or Territory
National Streamflow Statistics Program: Version History
StreamStats in Montana and Wyoming
Peak-flow frequency analyses for selected streamgages in Dawson and Richland Counties, and the Powder River Basin, Montana, based on data through water year 2022
Peak-flow frequency analyses for selected streamgages in and near the Milk River Basin, Montana, based on data through water year 2018, part 2
Peak-flow frequency analyses for selected streamgages on the Bighorn, Tongue, and Lower Yellowstone Rivers and tributaries and Home Creek, Montana, based on data through water year 2021
Peak-flow frequency analyses for selected streamgages in and near Teton 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
Peak-flow frequency analyses for selected streamgages in and near the Milk River Basin, Montana, based on data through water year 2018, Part 1
Flow-Conditioned Parameter Grids for the Contiguous United States: A Pilot, Seamless Basin Characteristic Dataset
Dam impact/disturbance metrics for the conterminous United States, 1800 to 2018
Peak-flow frequency analyses for selected streamgages in Carbon County, Montana, based on data through water year 2018
Peak-flow frequency analyses for 14 selected streamgages in the Beaverhead River and Clark Fork Basins Montana, based on data through water year 2016
Peak-flow frequency analyses for 99 selected streamgages in or near Montana, based on data through water year 2015 (ver. 1.1, August 2020)
Peak-Flow Frequency Analyses for Selected Streamgages in Missoula and Granite Counties, Montana, Based on Data through Water Year 2018
StreamStats—A quarter century of delivering web-based geospatial and hydrologic information to the public, and lessons learned
Controlling skewness in MOVE3 peak-flow record extensions
Methods for peak-flow frequency analysis and reporting for streamgages in or near Montana based on data through water year 2015
Methods for estimating peak-flow frequencies at ungaged sites in Montana based on data through water year 2011: Chapter F in Montana StreamStats
Peak-flow frequency analyses and results based on data through water year 2011 for selected streamflow-gaging stations in or near Montana: Chapter C in Montana StreamStats
Methods for estimating streamflow characteristics at ungaged sites in western Montana based on data through water year 2009: Chapter G in Montana StreamStats
Montana StreamStats—A method for retrieving basin and streamflow characteristics in Montana: Chapter A in Montana StreamStats
Streamflow characteristics based on data through water year 2009 for selected streamflow-gaging stations in or near Montana: Chapter E in Montana StreamStats
Temporal trends and stationarity in annual peak flow and peak-flow timing for selected long-term streamflow-gaging stations in or near Montana through water year 2011: Chapter B in Montana StreamStats
Adjusted peak-flow frequency estimates for selected streamflow-gaging stations in or near Montana based on data through water year 2011: Chapter D in Montana StreamStats
Lateral and vertical channel movement and potential for bed-material movement on the Madison River downstream from Earthquake Lake, Montana
A digital model for planning water management at Benton Lake National Wildlife Refuge, west-central Montana
Peak Flow Frequency R EXtensions
Flow-Conditioned Parameter Grid Tools
The Flow-Conditioned Parameter Grid (FCPG) Tools are a Python 3 library to make FCPGs for either two-digit Hydrologic Unit Code (HUC2) regions, four-digit Hydrologic Unit Code (HUC4) regions, or other geospatial tiling schemes. These tools can be used in a Linux-based high performance computing (HPC) environment or locally on your system.
StreamStats Data Preparation Tools, version 4
A Python package to pre-process and hydro-enforce digital elevation models using hydrography features for use in the U.S. Geological Survey (USGS) StreamStats project.
National Streamflow Statistics (NSS) Application - Formerly NSS Program
The USGS develops regression equations for estimating streamflow statistics for every state, Puerto Rico, and a number of metropolitan areas in the U.S. These equations have been compiled into the National Streamflow Statistics (NSS) Application for design, planning, management, and regulatory purposes. These estimates are often needed at ungaged sites where no observed flow data are available.
Science and Products
South Carolina Streams Stats: Phase 2
Building a framework to compute continuous grids of basin characteristics for the conterminous United States
Developing a "fire-aware" stream gage network by integrating USGS enterprise databases
StreamStats: Streamflow Statistics and Spatial Analysis Tools for Water-Resources Applications
Transportation-Related Water Projects
National Streamflow Statistics Program: Known Issues
National Streamflow Statistics Application: Regional Regression Equation Publications by State or Territory
National Streamflow Statistics Program: Version History
StreamStats in Montana and Wyoming
Peak-flow frequency analyses for selected streamgages in Dawson and Richland Counties, and the Powder River Basin, Montana, based on data through water year 2022
Peak-flow frequency analyses for selected streamgages in and near the Milk River Basin, Montana, based on data through water year 2018, part 2
Peak-flow frequency analyses for selected streamgages on the Bighorn, Tongue, and Lower Yellowstone Rivers and tributaries and Home Creek, Montana, based on data through water year 2021
Peak-flow frequency analyses for selected streamgages in and near Teton 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
Peak-flow frequency analyses for selected streamgages in and near the Milk River Basin, Montana, based on data through water year 2018, Part 1
Flow-Conditioned Parameter Grids for the Contiguous United States: A Pilot, Seamless Basin Characteristic Dataset
Dam impact/disturbance metrics for the conterminous United States, 1800 to 2018
Peak-flow frequency analyses for selected streamgages in Carbon County, Montana, based on data through water year 2018
Peak-flow frequency analyses for 14 selected streamgages in the Beaverhead River and Clark Fork Basins Montana, based on data through water year 2016
Peak-flow frequency analyses for 99 selected streamgages in or near Montana, based on data through water year 2015 (ver. 1.1, August 2020)
Peak-Flow Frequency Analyses for Selected Streamgages in Missoula and Granite Counties, Montana, Based on Data through Water Year 2018
StreamStats—A quarter century of delivering web-based geospatial and hydrologic information to the public, and lessons learned
Controlling skewness in MOVE3 peak-flow record extensions
Methods for peak-flow frequency analysis and reporting for streamgages in or near Montana based on data through water year 2015
Methods for estimating peak-flow frequencies at ungaged sites in Montana based on data through water year 2011: Chapter F in Montana StreamStats
Peak-flow frequency analyses and results based on data through water year 2011 for selected streamflow-gaging stations in or near Montana: Chapter C in Montana StreamStats
Methods for estimating streamflow characteristics at ungaged sites in western Montana based on data through water year 2009: Chapter G in Montana StreamStats
Montana StreamStats—A method for retrieving basin and streamflow characteristics in Montana: Chapter A in Montana StreamStats
Streamflow characteristics based on data through water year 2009 for selected streamflow-gaging stations in or near Montana: Chapter E in Montana StreamStats
Temporal trends and stationarity in annual peak flow and peak-flow timing for selected long-term streamflow-gaging stations in or near Montana through water year 2011: Chapter B in Montana StreamStats
Adjusted peak-flow frequency estimates for selected streamflow-gaging stations in or near Montana based on data through water year 2011: Chapter D in Montana StreamStats
Lateral and vertical channel movement and potential for bed-material movement on the Madison River downstream from Earthquake Lake, Montana
A digital model for planning water management at Benton Lake National Wildlife Refuge, west-central Montana
Peak Flow Frequency R EXtensions
Flow-Conditioned Parameter Grid Tools
The Flow-Conditioned Parameter Grid (FCPG) Tools are a Python 3 library to make FCPGs for either two-digit Hydrologic Unit Code (HUC2) regions, four-digit Hydrologic Unit Code (HUC4) regions, or other geospatial tiling schemes. These tools can be used in a Linux-based high performance computing (HPC) environment or locally on your system.
StreamStats Data Preparation Tools, version 4
A Python package to pre-process and hydro-enforce digital elevation models using hydrography features for use in the U.S. Geological Survey (USGS) StreamStats project.
National Streamflow Statistics (NSS) Application - Formerly NSS Program
The USGS develops regression equations for estimating streamflow statistics for every state, Puerto Rico, and a number of metropolitan areas in the U.S. These equations have been compiled into the National Streamflow Statistics (NSS) Application for design, planning, management, and regulatory purposes. These estimates are often needed at ungaged sites where no observed flow data are available.