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Scott A Olson (Former Employee)

Science and Products

A USGS hydrologist stands in front of debris and damage of Cobble Ridge Road Bridge over the West River in Londonderry, Vermo

July 2023 Flood in Vermont

From July 9 through July 12, 2023, 3 to 9 inches of rain fell within 48 hours across the state of Vermont, causing catastrophic flooding and millions of dollars in damage. The high amount of rain caused several rivers to peak at record levels, in some cases exceeding records set during Tropical Storm Irene in 2011.
By
New England Water Science Center
July 2023 Flood in Vermont

July 2023 Flood in Vermont

From July 9 through July 12, 2023, 3 to 9 inches of rain fell within 48 hours across the state of Vermont, causing catastrophic flooding and millions of dollars in damage. The high amount of rain caused several rivers to peak at record levels, in some cases exceeding records set during Tropical Storm Irene in 2011.
Learn More
A small rocky stream surrounded by fall foliage

Characterizing Future Climate and Hydrology in Massachusetts using Stochastic Modeling Methods

Communities across Massachusetts may face potential consequences of climate change, ranging from more extreme rainfall to more pronounced and frequent droughts. Climate change could alter the state’s hydrology in potentially complex and unanticipated ways. Typical approaches for projecting hydrologic risk under climate change can misrepresent and underestimate the variability of climate and...
By
New England Water Science Center
Characterizing Future Climate and Hydrology in Massachusetts using Stochastic Modeling Methods

Characterizing Future Climate and Hydrology in Massachusetts using Stochastic Modeling Methods

Communities across Massachusetts may face potential consequences of climate change, ranging from more extreme rainfall to more pronounced and frequent droughts. Climate change could alter the state’s hydrology in potentially complex and unanticipated ways. Typical approaches for projecting hydrologic risk under climate change can misrepresent and underestimate the variability of climate and...
Learn More
Screenshot of the Flood Insurance Map

Development of Flood Insurance Maps in New England

FEMA has requested USGS expertise in hydraulics, hydrology, and mapping to generate flood insurance maps for New England.
By
New England Water Science Center
Development of Flood Insurance Maps in New England

Development of Flood Insurance Maps in New England

FEMA has requested USGS expertise in hydraulics, hydrology, and mapping to generate flood insurance maps for New England.
Learn More
A streamgage next to a river in flooded water.

Development of Streamflow Record Extension Equations in New Hampshire

Currently, there are 16 designated rivers in New Hampshire in need of daily mean streamflow estimates for managing instream flows. Many of New Hampshire’s Designated Rivers have current and/or historical streamflow data that may be used to extend an existing streamgages streamflow record in time through record extension techniques. Evaluating the feasibility of record extension techniques to...
By
New England Water Science Center
Development of Streamflow Record Extension Equations in New Hampshire

Development of Streamflow Record Extension Equations in New Hampshire

Currently, there are 16 designated rivers in New Hampshire in need of daily mean streamflow estimates for managing instream flows. Many of New Hampshire’s Designated Rivers have current and/or historical streamflow data that may be used to extend an existing streamgages streamflow record in time through record extension techniques. Evaluating the feasibility of record extension techniques to...
Learn More
Survey at a dam-removal and culvert-retrofit site

Flow Modeling at Dam Removal Sites Associated with Hurricane Sandy Resiliency Efforts

The purpose of this work is to better understand the effects of dam removal on local hydraulics, fish passage, and flooding. This study is part of a larger effort to monitor ecological resilience changes at nine Hurricane Sandy coastal resiliency aquatic connectivity restoration projects. It will contribute crucial knowledge that will be used to improve aquatic connectivity system cost...
By
New England Water Science Center, USGS Science in Long Island Sound and its Watershed
Flow Modeling at Dam Removal Sites Associated with Hurricane Sandy Resiliency Efforts

Flow Modeling at Dam Removal Sites Associated with Hurricane Sandy Resiliency Efforts

The purpose of this work is to better understand the effects of dam removal on local hydraulics, fish passage, and flooding. This study is part of a larger effort to monitor ecological resilience changes at nine Hurricane Sandy coastal resiliency aquatic connectivity restoration projects. It will contribute crucial knowledge that will be used to improve aquatic connectivity system cost...
Learn More

Data for the Estimation of Flood Discharges at Selected Annual Exceedance Probabilities for Unregulated, Rural Streams in Vermont, 2023 Data for the Estimation of Flood Discharges at Selected Annual Exceedance Probabilities for Unregulated, Rural Streams in Vermont, 2023

These data include annual instantaneous maximum discharge record for 156 streams and rivers in Vermont and adjacent areas of New Hampshire, Massachusetts, and New York through the 2023 water year. The data also include flood-frequency estimates for the 50-, 20-, 10-, 4-, 2-, 1-, 0.5-, and 0.2-percent annual exceedance probabilities that were analyzed using the discharge data. These flood...
By
New England Water Science Center

Vermont Flood of July 2023 Data Vermont Flood of July 2023 Data

A major rain event caused catastrophic flooding from July 9 through 12, 2023, in various portions of the State of Vermont, resulting in millions of dollars of damage. The high amount of rainfall caused several rivers to peak at record levels, in some cases exceeding records set by Tropical Storm Irene in 2011. President Biden approved an Emergency Declaration for Vermont on July 11, 2023...
By
New England Water Science Center

Data for a Pilot Study Characterizing Future Climate and Hydrology in Massachusetts Data for a Pilot Study Characterizing Future Climate and Hydrology in Massachusetts

The U.S. Geological Survey has developed tools for projecting twenty-first century climate and hydrologic risk in Massachusetts in collaboration with Cornell University and Tufts University. These tools included a Stochastic Weather Generator (SWG). Output from the SWG is in this data release. The release includes daily precipitation and minimum and maximum air temperature for a 64-year...
By
New England Water Science Center

Data for Characterizing Changes in the 1-percent Annual Exceedance Probability Streamflows for Climate Change Scenarios in the Housatonic River Watershed, Massachusetts, Connecticut, and New York Data for Characterizing Changes in the 1-percent Annual Exceedance Probability Streamflows for Climate Change Scenarios in the Housatonic River Watershed, Massachusetts, Connecticut, and New York

The U.S. Geological Survey in cooperation with the Federal Emergency Management Agency has conducted a study to evaluate potential changes to1-percent annual exceedance probability (AEP) streamflows. The study was conducted using the Precipitation Runoff Modeling System (PRMS). Climate inputs to the model of temperature and precipitation were scaled to anticipated changes that could...
By
New England Water Science Center

Data and shapefiles used to document the floods associated with the January and March 2018 Nor'easters for Coastal Areas of New England (ver. 2.0, November 2021) Data and shapefiles used to document the floods associated with the January and March 2018 Nor'easters for Coastal Areas of New England (ver. 2.0, November 2021)

The U.S. Geological Survey (USGS) New England Water Science Center worked with the Federal Emergency Management Agency to document the floods of January 4, 2018 and March 2-4, 2018, in coastal Massachusetts. USGS conducted a frequency analysis of stillwater elevations at three National Oceanic and Atmospheric Administration coastal gages following the coastal floods of 2018. The data for...
By
New England Water Science Center

Data for Simulating the Effects of Air Temperature and Precipitation Changes on Streamflow and Water Temperature in the Meduxnekeag River Watershed, Maine Data for Simulating the Effects of Air Temperature and Precipitation Changes on Streamflow and Water Temperature in the Meduxnekeag River Watershed, Maine

The U.S. Geological Survey (USGS), in cooperation with the Houlton Band of Maliseet Indians (HBMI), has developed tools to assess the effects climate change on hydrology and water temperatures in the Meduxnekeag River Watershed in Maine. A USGS Scientific Investigations Report (SIR) report documents tools and datasets developed by the USGS to evaluate how climate change will affect the...
By
New England Water Science Center

Data and hydraulic models at selected dam-removal and culvert-retrofit sites in the northeastern United States Data and hydraulic models at selected dam-removal and culvert-retrofit sites in the northeastern United States

This dataset contains U.S. Geological Survey (USGS) developed hydraulic models, USGS developed hydrology data, US Fish and Wildlife Service (USFWS) supplied data (topography/bathymetry and structure data for pre removal conditions), and USGS field surveyed data at nine dam-removal and culvert-retrofit sites in the northeastern United States (Olson and Simeone, 2021). The hydrology, the...
By
New England Water Science Center
An Automated Hydraulic Modeling Tool for Stream Crossing Replacement Projects in Massachusetts - Transportation Research Board Annual Meeting, 2024 An Automated Hydraulic Modeling Tool for Stream Crossing Replacement Projects in Massachusetts - Transportation Research Board Annual Meeting, 2024
An Automated Hydraulic Modeling Tool for Stream Crossing Replacement Projects in Massachusetts - Transportation Research Board Annual Meeting, 2024

An Automated Hydraulic Modeling Tool for Stream Crossing Replacement Projects in Massachusetts - Transportation Research Board Annual Meeting, 2024

An Automated Hydraulic Modeling Tool for Stream Crossing Replacement Projects in Massachusetts - Transportation Research Board Annual Meeting, 2024

The U.S.

By
New England Water Science Center
An Automated Hydraulic Modeling Tool for Stream Crossing Replacement Projects in Massachusetts - Transportation Research Board Annual Meeting, 2024

An Automated Hydraulic Modeling Tool for Stream Crossing Replacement Projects in Massachusetts - Transportation Research Board Annual Meeting, 2024

An Automated Hydraulic Modeling Tool for Stream Crossing Replacement Projects in Massachusetts - Transportation Research Board Annual Meeting, 2024

The U.S.

By
New England Water Science Center
Filter Total Items: 100

Estimating flood discharges at selected annual exceedance probabilities for unregulated, rural streams in Vermont, 2023 Estimating flood discharges at selected annual exceedance probabilities for unregulated, rural streams in Vermont, 2023

This report provides estimates of flood discharge at selected annual exceedance probabilities (AEPs) for streamgages in and adjacent to Vermont and equations for estimating flood discharges at AEPs of 50-, 20-, 10-, 4-, 2-, 1-, 0.5-, and 0.2-percent (recurrence intervals of 2-, 5-, 10-, 25-, 50-, 100-, and 500-years, respectively) for ungaged, unregulated, rural streams in Vermont with...
Authors
Scott A. Olson
By
New England Water Science Center

Flood of July 2023 in Vermont Flood of July 2023 in Vermont

A major storm caused catastrophic flooding in many parts of Vermont on July 9–12, 2023, resulting in millions of dollars in damages. The high amount of rainfall caused several rivers to peak at record levels, in some cases exceeding records set during Tropical Storm Irene in 2011. The U.S. Geological Survey, in cooperation with the Federal Emergency Management Agency, collected and...
Authors
Travis Smith, Scott A. Olson, James LeNoir, Rena Kalmon, Elizabeth Ahearn
By
New England Water Science Center

Characterizing future streamflows in Massachusetts using stochastic modeling—A pilot study Characterizing future streamflows in Massachusetts using stochastic modeling—A pilot study

Communities throughout Massachusetts face the potential effects of climate change, ranging from more extreme rainfall to more pronounced and frequent droughts. Understanding the effects of climate change on hydrology is important to State and community officials to evaluate the potential effects on infrastructure and water systems. To better understand the effects of climate change on...
Authors
Scott A. Olson, Ghazal Shabestanipour, Jonathan Lamontagne, Scott Steinschneider
By
Water Resources Mission Area, New England Water Science Center

Characterizing changes in the 1-percent annual exceedance probability streamflows for climate-change scenarios in the Housatonic River watershed of Massachusetts, Connecticut, and New York Characterizing changes in the 1-percent annual exceedance probability streamflows for climate-change scenarios in the Housatonic River watershed of Massachusetts, Connecticut, and New York

Current methods for determining the 1-percent annual exceedance probability (AEP) for a streamflow assume stationarity (the assumption that the statistical distribution of data from past observations does not contain trends and will continue unchanged in the future). This assumption allows the 1-percent AEP to be determined based on historical streamflow records. However, the assumption...
Authors
Scott Olson
By
Water Resources Mission Area, New England Water Science Center

Simulating the effects of climate-related changes to air temperature and precipitation on streamflow and water temperature in the Meduxnekeag River watershed, Maine Simulating the effects of climate-related changes to air temperature and precipitation on streamflow and water temperature in the Meduxnekeag River watershed, Maine

Responsible stewardship of native fish populations and riparian plants in the Meduxnekeag River watershed in northeastern Maine is a high priority for the Houlton Band of Maliseet Indians. Understanding the potential changes in hydrology and water temperature as a result of climate change is important to this priority for evaluating future habitat conditions in the watershed. This report...
Authors
David Bjerklie, Scott Olson
By
Water Resources Mission Area, New England Water Science Center

Documentation and mapping of flooding from the January and March 2018 nor’easters in coastal New England Documentation and mapping of flooding from the January and March 2018 nor’easters in coastal New England

In January and March 2018, coastal Massachusetts experienced flooding from two separate nor’easters. To put the January and March floods into historical context, the USGS computed statistical stillwater elevations. Stillwater elevations recorded in January 2018 in Boston (9.66 feet relative to the North American Vertical Datum of 1988) have an annual exceedance probability of between 2...
Authors
Pamela Lombard, Scott Olson, Luke Sturtevant, Rena Kalmon
By
Water Resources Mission Area, New England Water Science Center

Hydraulic modeling at selected dam-removal and culvert-retrofit sites in the northeastern United States Hydraulic modeling at selected dam-removal and culvert-retrofit sites in the northeastern United States

Aquatic connectivity projects, such as removing dams and modifying culverts, have substantial benefits. The restoration of natural flow conditions improves water quality, sediment transport, aquatic and riparian habitat, and fish passage. These projects can also decrease hazards faced by communities by lowering water-surface elevations of flood waters and by removing the risk of dam...
Authors
Scott Olson, Caelan Simeone
By
Water Resources Mission Area, New England Water Science Center

Methods for estimating regional coefficient of skewness for unregulated streams in New England, based on data through water year 2011 Methods for estimating regional coefficient of skewness for unregulated streams in New England, based on data through water year 2011

The magnitude of annual exceedance probability floods is greatly affected by the coefficient of skewness (skew) of the annual peak flows at a streamgage. Standard flood frequency methods recommend weighting the station skew with a regional skew to better represent regional and stable conditions. This study presents an updated analysis of a regional skew for New England developed using a...
Authors
Andrea Veilleux, Phillip Zarriello, Glenn Hodgkins, Elizabeth Ahearn, Scott A. Olson, Timothy Cohn
By
Water Resources Mission Area

Development and evaluation of a record extension technique for estimating discharge at selected stream sites in New Hampshire Development and evaluation of a record extension technique for estimating discharge at selected stream sites in New Hampshire

Daily mean discharges are needed for rivers in New Hampshire for the management of instream flows. It is impractical, however, to continuously gage all streams in New Hampshire, and at many sites where information is needed, the discharge data required do not exist. For such sites, techniques for estimating discharge are available. The U.S. Geological Survey, in cooperation with the New...
Authors
Scott A. Olson, Abraham Meyerhofer
By
Water Resources Mission Area, New England Water Science Center

The Connecticut Streamflow and Sustainable Water Use Estimator—A decision-support tool to estimate water availability at ungaged stream locations in Connecticut The Connecticut Streamflow and Sustainable Water Use Estimator—A decision-support tool to estimate water availability at ungaged stream locations in Connecticut

Freshwater streams in Connecticut are subject to many competing demands, including public water supply; agricultural, commercial, and industrial water use; and ecosystem and habitat needs. In recent years, drought has further stressed Connecticut’s water resources. To sustainably allocate and manage water resources among these competing uses, Federal, State, and local water-resource...
Authors
Sara B. Levin, Scott A. Olson, Martha Nielsen, Gregory E. Granato
By
Water Resources Mission Area, New England Water Science Center

Tropical storm Irene flood of August 2011 in northwestern Massachusetts Tropical storm Irene flood of August 2011 in northwestern Massachusetts

A Presidential disaster was declared in northwestern Massachusetts, following flooding from tropical storm Irene on August 28, 2011. During the storm, 3 to 10 inches of rain fell on soils that were susceptible to flash flooding because of wet antecedent conditions. The gage height at one U.S. Geological Survey streamgage rose nearly 20 feet in less than 4 hours because of the combination...
Authors
Gardner Bent, Scott Olson, Andrew Massey
By
Water Resources Mission Area, New England Water Science Center

Flood Map for the Winooski River in Waterbury, Vermont, 2014 Flood Map for the Winooski River in Waterbury, Vermont, 2014

From August 28 to 29, 2011, Tropical Storm Irene delivered rainfall ranging from approximately 4 to more than 7 inches in the Winooski River Basin in Vermont. The rainfall resulted in severe flooding throughout the basin and significant damage along the Winooski River. In response to the flooding, the U.S. Geological Survey (USGS), in cooperation with the Federal Emergency Management...
Authors
Scott Olson
By
Water Resources Mission Area, New England Water Science Center

Science and Products

A USGS hydrologist stands in front of debris and damage of Cobble Ridge Road Bridge over the West River in Londonderry, Vermo

July 2023 Flood in Vermont

From July 9 through July 12, 2023, 3 to 9 inches of rain fell within 48 hours across the state of Vermont, causing catastrophic flooding and millions of dollars in damage. The high amount of rain caused several rivers to peak at record levels, in some cases exceeding records set during Tropical Storm Irene in 2011.
By
New England Water Science Center
July 2023 Flood in Vermont

July 2023 Flood in Vermont

From July 9 through July 12, 2023, 3 to 9 inches of rain fell within 48 hours across the state of Vermont, causing catastrophic flooding and millions of dollars in damage. The high amount of rain caused several rivers to peak at record levels, in some cases exceeding records set during Tropical Storm Irene in 2011.
Learn More
A small rocky stream surrounded by fall foliage

Characterizing Future Climate and Hydrology in Massachusetts using Stochastic Modeling Methods

Communities across Massachusetts may face potential consequences of climate change, ranging from more extreme rainfall to more pronounced and frequent droughts. Climate change could alter the state’s hydrology in potentially complex and unanticipated ways. Typical approaches for projecting hydrologic risk under climate change can misrepresent and underestimate the variability of climate and...
By
New England Water Science Center
Characterizing Future Climate and Hydrology in Massachusetts using Stochastic Modeling Methods

Characterizing Future Climate and Hydrology in Massachusetts using Stochastic Modeling Methods

Communities across Massachusetts may face potential consequences of climate change, ranging from more extreme rainfall to more pronounced and frequent droughts. Climate change could alter the state’s hydrology in potentially complex and unanticipated ways. Typical approaches for projecting hydrologic risk under climate change can misrepresent and underestimate the variability of climate and...
Learn More
Screenshot of the Flood Insurance Map

Development of Flood Insurance Maps in New England

FEMA has requested USGS expertise in hydraulics, hydrology, and mapping to generate flood insurance maps for New England.
By
New England Water Science Center
Development of Flood Insurance Maps in New England

Development of Flood Insurance Maps in New England

FEMA has requested USGS expertise in hydraulics, hydrology, and mapping to generate flood insurance maps for New England.
Learn More
A streamgage next to a river in flooded water.

Development of Streamflow Record Extension Equations in New Hampshire

Currently, there are 16 designated rivers in New Hampshire in need of daily mean streamflow estimates for managing instream flows. Many of New Hampshire’s Designated Rivers have current and/or historical streamflow data that may be used to extend an existing streamgages streamflow record in time through record extension techniques. Evaluating the feasibility of record extension techniques to...
By
New England Water Science Center
Development of Streamflow Record Extension Equations in New Hampshire

Development of Streamflow Record Extension Equations in New Hampshire

Currently, there are 16 designated rivers in New Hampshire in need of daily mean streamflow estimates for managing instream flows. Many of New Hampshire’s Designated Rivers have current and/or historical streamflow data that may be used to extend an existing streamgages streamflow record in time through record extension techniques. Evaluating the feasibility of record extension techniques to...
Learn More
Survey at a dam-removal and culvert-retrofit site

Flow Modeling at Dam Removal Sites Associated with Hurricane Sandy Resiliency Efforts

The purpose of this work is to better understand the effects of dam removal on local hydraulics, fish passage, and flooding. This study is part of a larger effort to monitor ecological resilience changes at nine Hurricane Sandy coastal resiliency aquatic connectivity restoration projects. It will contribute crucial knowledge that will be used to improve aquatic connectivity system cost...
By
New England Water Science Center, USGS Science in Long Island Sound and its Watershed
Flow Modeling at Dam Removal Sites Associated with Hurricane Sandy Resiliency Efforts

Flow Modeling at Dam Removal Sites Associated with Hurricane Sandy Resiliency Efforts

The purpose of this work is to better understand the effects of dam removal on local hydraulics, fish passage, and flooding. This study is part of a larger effort to monitor ecological resilience changes at nine Hurricane Sandy coastal resiliency aquatic connectivity restoration projects. It will contribute crucial knowledge that will be used to improve aquatic connectivity system cost...
Learn More

Data for the Estimation of Flood Discharges at Selected Annual Exceedance Probabilities for Unregulated, Rural Streams in Vermont, 2023 Data for the Estimation of Flood Discharges at Selected Annual Exceedance Probabilities for Unregulated, Rural Streams in Vermont, 2023

These data include annual instantaneous maximum discharge record for 156 streams and rivers in Vermont and adjacent areas of New Hampshire, Massachusetts, and New York through the 2023 water year. The data also include flood-frequency estimates for the 50-, 20-, 10-, 4-, 2-, 1-, 0.5-, and 0.2-percent annual exceedance probabilities that were analyzed using the discharge data. These flood...
By
New England Water Science Center

Vermont Flood of July 2023 Data Vermont Flood of July 2023 Data

A major rain event caused catastrophic flooding from July 9 through 12, 2023, in various portions of the State of Vermont, resulting in millions of dollars of damage. The high amount of rainfall caused several rivers to peak at record levels, in some cases exceeding records set by Tropical Storm Irene in 2011. President Biden approved an Emergency Declaration for Vermont on July 11, 2023...
By
New England Water Science Center

Data for a Pilot Study Characterizing Future Climate and Hydrology in Massachusetts Data for a Pilot Study Characterizing Future Climate and Hydrology in Massachusetts

The U.S. Geological Survey has developed tools for projecting twenty-first century climate and hydrologic risk in Massachusetts in collaboration with Cornell University and Tufts University. These tools included a Stochastic Weather Generator (SWG). Output from the SWG is in this data release. The release includes daily precipitation and minimum and maximum air temperature for a 64-year...
By
New England Water Science Center

Data for Characterizing Changes in the 1-percent Annual Exceedance Probability Streamflows for Climate Change Scenarios in the Housatonic River Watershed, Massachusetts, Connecticut, and New York Data for Characterizing Changes in the 1-percent Annual Exceedance Probability Streamflows for Climate Change Scenarios in the Housatonic River Watershed, Massachusetts, Connecticut, and New York

The U.S. Geological Survey in cooperation with the Federal Emergency Management Agency has conducted a study to evaluate potential changes to1-percent annual exceedance probability (AEP) streamflows. The study was conducted using the Precipitation Runoff Modeling System (PRMS). Climate inputs to the model of temperature and precipitation were scaled to anticipated changes that could...
By
New England Water Science Center

Data and shapefiles used to document the floods associated with the January and March 2018 Nor'easters for Coastal Areas of New England (ver. 2.0, November 2021) Data and shapefiles used to document the floods associated with the January and March 2018 Nor'easters for Coastal Areas of New England (ver. 2.0, November 2021)

The U.S. Geological Survey (USGS) New England Water Science Center worked with the Federal Emergency Management Agency to document the floods of January 4, 2018 and March 2-4, 2018, in coastal Massachusetts. USGS conducted a frequency analysis of stillwater elevations at three National Oceanic and Atmospheric Administration coastal gages following the coastal floods of 2018. The data for...
By
New England Water Science Center

Data for Simulating the Effects of Air Temperature and Precipitation Changes on Streamflow and Water Temperature in the Meduxnekeag River Watershed, Maine Data for Simulating the Effects of Air Temperature and Precipitation Changes on Streamflow and Water Temperature in the Meduxnekeag River Watershed, Maine

The U.S. Geological Survey (USGS), in cooperation with the Houlton Band of Maliseet Indians (HBMI), has developed tools to assess the effects climate change on hydrology and water temperatures in the Meduxnekeag River Watershed in Maine. A USGS Scientific Investigations Report (SIR) report documents tools and datasets developed by the USGS to evaluate how climate change will affect the...
By
New England Water Science Center

Data and hydraulic models at selected dam-removal and culvert-retrofit sites in the northeastern United States Data and hydraulic models at selected dam-removal and culvert-retrofit sites in the northeastern United States

This dataset contains U.S. Geological Survey (USGS) developed hydraulic models, USGS developed hydrology data, US Fish and Wildlife Service (USFWS) supplied data (topography/bathymetry and structure data for pre removal conditions), and USGS field surveyed data at nine dam-removal and culvert-retrofit sites in the northeastern United States (Olson and Simeone, 2021). The hydrology, the...
By
New England Water Science Center
An Automated Hydraulic Modeling Tool for Stream Crossing Replacement Projects in Massachusetts - Transportation Research Board Annual Meeting, 2024 An Automated Hydraulic Modeling Tool for Stream Crossing Replacement Projects in Massachusetts - Transportation Research Board Annual Meeting, 2024
An Automated Hydraulic Modeling Tool for Stream Crossing Replacement Projects in Massachusetts - Transportation Research Board Annual Meeting, 2024

An Automated Hydraulic Modeling Tool for Stream Crossing Replacement Projects in Massachusetts - Transportation Research Board Annual Meeting, 2024

An Automated Hydraulic Modeling Tool for Stream Crossing Replacement Projects in Massachusetts - Transportation Research Board Annual Meeting, 2024

The U.S.

By
New England Water Science Center
An Automated Hydraulic Modeling Tool for Stream Crossing Replacement Projects in Massachusetts - Transportation Research Board Annual Meeting, 2024

An Automated Hydraulic Modeling Tool for Stream Crossing Replacement Projects in Massachusetts - Transportation Research Board Annual Meeting, 2024

An Automated Hydraulic Modeling Tool for Stream Crossing Replacement Projects in Massachusetts - Transportation Research Board Annual Meeting, 2024

The U.S.

By
New England Water Science Center
Filter Total Items: 100

Estimating flood discharges at selected annual exceedance probabilities for unregulated, rural streams in Vermont, 2023 Estimating flood discharges at selected annual exceedance probabilities for unregulated, rural streams in Vermont, 2023

This report provides estimates of flood discharge at selected annual exceedance probabilities (AEPs) for streamgages in and adjacent to Vermont and equations for estimating flood discharges at AEPs of 50-, 20-, 10-, 4-, 2-, 1-, 0.5-, and 0.2-percent (recurrence intervals of 2-, 5-, 10-, 25-, 50-, 100-, and 500-years, respectively) for ungaged, unregulated, rural streams in Vermont with...
Authors
Scott A. Olson
By
New England Water Science Center

Flood of July 2023 in Vermont Flood of July 2023 in Vermont

A major storm caused catastrophic flooding in many parts of Vermont on July 9–12, 2023, resulting in millions of dollars in damages. The high amount of rainfall caused several rivers to peak at record levels, in some cases exceeding records set during Tropical Storm Irene in 2011. The U.S. Geological Survey, in cooperation with the Federal Emergency Management Agency, collected and...
Authors
Travis Smith, Scott A. Olson, James LeNoir, Rena Kalmon, Elizabeth Ahearn
By
New England Water Science Center

Characterizing future streamflows in Massachusetts using stochastic modeling—A pilot study Characterizing future streamflows in Massachusetts using stochastic modeling—A pilot study

Communities throughout Massachusetts face the potential effects of climate change, ranging from more extreme rainfall to more pronounced and frequent droughts. Understanding the effects of climate change on hydrology is important to State and community officials to evaluate the potential effects on infrastructure and water systems. To better understand the effects of climate change on...
Authors
Scott A. Olson, Ghazal Shabestanipour, Jonathan Lamontagne, Scott Steinschneider
By
Water Resources Mission Area, New England Water Science Center

Characterizing changes in the 1-percent annual exceedance probability streamflows for climate-change scenarios in the Housatonic River watershed of Massachusetts, Connecticut, and New York Characterizing changes in the 1-percent annual exceedance probability streamflows for climate-change scenarios in the Housatonic River watershed of Massachusetts, Connecticut, and New York

Current methods for determining the 1-percent annual exceedance probability (AEP) for a streamflow assume stationarity (the assumption that the statistical distribution of data from past observations does not contain trends and will continue unchanged in the future). This assumption allows the 1-percent AEP to be determined based on historical streamflow records. However, the assumption...
Authors
Scott Olson
By
Water Resources Mission Area, New England Water Science Center

Simulating the effects of climate-related changes to air temperature and precipitation on streamflow and water temperature in the Meduxnekeag River watershed, Maine Simulating the effects of climate-related changes to air temperature and precipitation on streamflow and water temperature in the Meduxnekeag River watershed, Maine

Responsible stewardship of native fish populations and riparian plants in the Meduxnekeag River watershed in northeastern Maine is a high priority for the Houlton Band of Maliseet Indians. Understanding the potential changes in hydrology and water temperature as a result of climate change is important to this priority for evaluating future habitat conditions in the watershed. This report...
Authors
David Bjerklie, Scott Olson
By
Water Resources Mission Area, New England Water Science Center

Documentation and mapping of flooding from the January and March 2018 nor’easters in coastal New England Documentation and mapping of flooding from the January and March 2018 nor’easters in coastal New England

In January and March 2018, coastal Massachusetts experienced flooding from two separate nor’easters. To put the January and March floods into historical context, the USGS computed statistical stillwater elevations. Stillwater elevations recorded in January 2018 in Boston (9.66 feet relative to the North American Vertical Datum of 1988) have an annual exceedance probability of between 2...
Authors
Pamela Lombard, Scott Olson, Luke Sturtevant, Rena Kalmon
By
Water Resources Mission Area, New England Water Science Center

Hydraulic modeling at selected dam-removal and culvert-retrofit sites in the northeastern United States Hydraulic modeling at selected dam-removal and culvert-retrofit sites in the northeastern United States

Aquatic connectivity projects, such as removing dams and modifying culverts, have substantial benefits. The restoration of natural flow conditions improves water quality, sediment transport, aquatic and riparian habitat, and fish passage. These projects can also decrease hazards faced by communities by lowering water-surface elevations of flood waters and by removing the risk of dam...
Authors
Scott Olson, Caelan Simeone
By
Water Resources Mission Area, New England Water Science Center

Methods for estimating regional coefficient of skewness for unregulated streams in New England, based on data through water year 2011 Methods for estimating regional coefficient of skewness for unregulated streams in New England, based on data through water year 2011

The magnitude of annual exceedance probability floods is greatly affected by the coefficient of skewness (skew) of the annual peak flows at a streamgage. Standard flood frequency methods recommend weighting the station skew with a regional skew to better represent regional and stable conditions. This study presents an updated analysis of a regional skew for New England developed using a...
Authors
Andrea Veilleux, Phillip Zarriello, Glenn Hodgkins, Elizabeth Ahearn, Scott A. Olson, Timothy Cohn
By
Water Resources Mission Area

Development and evaluation of a record extension technique for estimating discharge at selected stream sites in New Hampshire Development and evaluation of a record extension technique for estimating discharge at selected stream sites in New Hampshire

Daily mean discharges are needed for rivers in New Hampshire for the management of instream flows. It is impractical, however, to continuously gage all streams in New Hampshire, and at many sites where information is needed, the discharge data required do not exist. For such sites, techniques for estimating discharge are available. The U.S. Geological Survey, in cooperation with the New...
Authors
Scott A. Olson, Abraham Meyerhofer
By
Water Resources Mission Area, New England Water Science Center

The Connecticut Streamflow and Sustainable Water Use Estimator—A decision-support tool to estimate water availability at ungaged stream locations in Connecticut The Connecticut Streamflow and Sustainable Water Use Estimator—A decision-support tool to estimate water availability at ungaged stream locations in Connecticut

Freshwater streams in Connecticut are subject to many competing demands, including public water supply; agricultural, commercial, and industrial water use; and ecosystem and habitat needs. In recent years, drought has further stressed Connecticut’s water resources. To sustainably allocate and manage water resources among these competing uses, Federal, State, and local water-resource...
Authors
Sara B. Levin, Scott A. Olson, Martha Nielsen, Gregory E. Granato
By
Water Resources Mission Area, New England Water Science Center

Tropical storm Irene flood of August 2011 in northwestern Massachusetts Tropical storm Irene flood of August 2011 in northwestern Massachusetts

A Presidential disaster was declared in northwestern Massachusetts, following flooding from tropical storm Irene on August 28, 2011. During the storm, 3 to 10 inches of rain fell on soils that were susceptible to flash flooding because of wet antecedent conditions. The gage height at one U.S. Geological Survey streamgage rose nearly 20 feet in less than 4 hours because of the combination...
Authors
Gardner Bent, Scott Olson, Andrew Massey
By
Water Resources Mission Area, New England Water Science Center

Flood Map for the Winooski River in Waterbury, Vermont, 2014 Flood Map for the Winooski River in Waterbury, Vermont, 2014

From August 28 to 29, 2011, Tropical Storm Irene delivered rainfall ranging from approximately 4 to more than 7 inches in the Winooski River Basin in Vermont. The rainfall resulted in severe flooding throughout the basin and significant damage along the Winooski River. In response to the flooding, the U.S. Geological Survey (USGS), in cooperation with the Federal Emergency Management...
Authors
Scott Olson
By
Water Resources Mission Area, New England Water Science Center
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