Mackenzie Keith
Mackenzie Keith is a Hydrologist at the USGS Oregon Water Science Center.
Mackenzie joined the Oregon Water Science Center in 2009 as a hydrologist on the Geomorphology Team. Her main research focuses on documenting and understanding recent and historical physical changes to rivers to inform restoration and management decisions. Current projects include characterizing the geomorphic responses of dam removal on the Sandy River, mapping the Willamette River floodplain geomorphology, characterizing the coupled upstream-downstream geomorphic responses to deep reservoir drawdowns at Fall Creek Lake, and developing a geomorphic framework to inform erosion and deposition processes within Willamette Valley reservoirs.
Education and Certifications
B.S. in Geology, Oregon State University, 2006
M.S. in Geology, Portland State University, 2012
Science and Products
Below are data sets that Mackenzie Keith has authored.
Filter Total Items: 21
High-resolution orthoimagery and digital surface model of Cottage Grove Lake, Oregon, December 2023 High-resolution orthoimagery and digital surface model of Cottage Grove Lake, Oregon, December 2023
In cooperation with the U.S. Army Corps of Engineers (USACE), the U.S. Geological Survey (USGS) surveyed ground control points and coordinated aerial photograph acquisition of Cottage Grove Lake, a multi-purpose reservoir in western Oregon impounded by the 29-meter ([m]; 95-foot [ft]) tall Cottage Grove Dam. Aerial photographs were acquired by the Civil Air Patrol (CAP) in December 2023...
Geomorphic Mapping of Fern Ridge Lake, Oregon, 2023 Geomorphic Mapping of Fern Ridge Lake, Oregon, 2023
In cooperation with the U.S. Army Corps of Engineers, the U.S. Geological Survey evaluated geomorphic conditions within Fern Ridge Lake near Eugene, Oregon, to inform cultural resources management and other natural resources decisions. Reservoir erosion and deposition during seasonal flood-control operations have formed a diverse array of landforms that can impact water storage, aquatic...
Classified Cover Mapping to Support Preliminary Assessment of Aquatic Invasive Vegetation (Ludwigia spp.) in the Willamette River, Oregon: Albany and Salem Reaches Classified Cover Mapping to Support Preliminary Assessment of Aquatic Invasive Vegetation (Ludwigia spp.) in the Willamette River, Oregon: Albany and Salem Reaches
Since 2008, large-scale restoration programs have been implemented along the Willamette River, Oregon, to address historical losses of floodplain habitats for native fish. For much of the Willamette River floodplain, direct enhancement of floodplain habitats through restoration activities is needed because the underlying hydrologic, geomorphic, and vegetation processes that historically...
High-resolution orthoimagery and digital surface models of Fern Ridge Lake, Oregon, during annual low pool, January and February, 2023 High-resolution orthoimagery and digital surface models of Fern Ridge Lake, Oregon, during annual low pool, January and February, 2023
In cooperation with the U.S. Army Corps of Engineers (USACE), the U.S. Geological Survey (USGS) deployed ground control points and coordinated aerial photograph acquisition of Fern Ridge Lake, a multi-purpose reservoir in western Oregon impounded by the 13-m tall Fern Ridge Dam. Aerial photographs were acquired by the Civil Air Patrol (CAP) during winter 2023 when water levels were at or...
Passive acoustic data collected using stationary hydrophones on rivers in the Willamette River Basin, Oregon Passive acoustic data collected using stationary hydrophones on rivers in the Willamette River Basin, Oregon
Underwater passive acoustic monitoring was conducted at multiple sites on rivers in the Willamette River Basin, Oregon. Hydrophones were used to record the sound associated with coarse river-bed sediment (bedload) movement. Bedload supply and transport are key factors determining channel morphology in gravel-bed rivers and can affect reach-scale conditions such as aggradation and...
Human-modified ponded features mapped within the Willamette River floodplain, Oregon, in 2018 Human-modified ponded features mapped within the Willamette River floodplain, Oregon, in 2018
The floodplains of the Willamette River and its major tributaries in western Oregon comprise a diverse array of natural and human-modified features that collectively support a wide range of habitats used by native fish and other wildlife. Like other large alluvial rivers, the Willamette River floodplain has many water bodies disconnected from the main river channel throughout most of the...
Below are publications that Mackenzie Keith has authored.
Filter Total Items: 34
Historical changes in bed elevation and water depth within the Nehalem Bay, Oregon, 1891–2019 Historical changes in bed elevation and water depth within the Nehalem Bay, Oregon, 1891–2019
Estuaries, at the nexus of rivers and the ocean, are depositional areas that respond to changes in streamflow, tides, sea level, and inputs of sediment from marine and watershed sources. Understanding changes in bed elevations, deposited and eroded sediment, and water depth throughout estuaries is relevant for understanding their present-day status and long-term evolution, identifying...
Authors
Mackenzie Keith, Krista Jones, Gabriel W. Gordon
Improving flood-frequency analysis with a 4,000-year record of flooding on the Tennessee River near Chattanooga, Tennessee Improving flood-frequency analysis with a 4,000-year record of flooding on the Tennessee River near Chattanooga, Tennessee
This comprehensive field study applied paleoflood hydrology methods to estimate the frequency of low-probability floods for the Tennessee River near Chattanooga, Tennessee. The study combined stratigraphic records of large, previously unrecorded floods with modern streamflow records and historical flood accounts. The overall approach was to (1) develop a flood chronology for the...
Authors
Tessa Harden, Jim E. O'Connor, Meredith Carr, Mackenzie Keith
River network and reach‐scale controls on habitat for lamprey larvae in the Umpqua River Basin, Oregon River network and reach‐scale controls on habitat for lamprey larvae in the Umpqua River Basin, Oregon
This study developed a spatially explicit framework to support the conservation of Western Brook Lamprey Lampetra richardsoni and Pacific Lamprey Entosphenus tridentatus in the Umpqua River basin, Oregon. This framework identified locations within the river network likely to support “potential burrowing habitat” for lamprey larvae based on geomorphic conditions and evaluated the overlap...
Authors
Krista Jones, Jason Dunham, Jim E. O'Connor, Mackenzie Keith, Joseph Mangano, Kelly Coates, Travis Mackie
Linking sedimentation and erosion patterns with reservoir morphology and dam operations during streambed drawdowns in a flood-control reservoir in the Oregon Cascades Linking sedimentation and erosion patterns with reservoir morphology and dam operations during streambed drawdowns in a flood-control reservoir in the Oregon Cascades
Since water-year (WY) 2011, pool levels at Fall Creek Lake, Oregon, are temporarily lowered to an elevation near historical streambed each fall, creating free-flowing channel conditions that facilitate downstream passage of juvenile spring Chinook salmon. These drawdown operations have also mobilized substantial quantities of predominantly fine (
Authors
Mackenzie Keith, Laurel E. Stratton
Monitoring framework for evaluating hydrogeomorphic and vegetation responses to environmental flows in the Middle Fork Willamette, McKenzie, and Santiam River Basins, Oregon Monitoring framework for evaluating hydrogeomorphic and vegetation responses to environmental flows in the Middle Fork Willamette, McKenzie, and Santiam River Basins, Oregon
This report summarizes a framework for monitoring hydrogeomorphic and vegetation responses to environmental flows in support of the Willamette Sustainable Rivers Program (SRP). The SRP is a partnership between The Nature Conservancy (TNC) and U.S. Army Corps of Engineers (USACE) to provide ecologically sustainable flows downstream of dams while still meeting human needs and...
Authors
J. Rose Wallick, Leslie Bach, Mackenzie K. Keith, Melissa Olson, Joseph Mangano, Krista Jones
GIS database and discussion for the distribution, composition, and age of Cenozoic volcanic rocks of the Pacific Northwest Volcanic Aquifer System study area GIS database and discussion for the distribution, composition, and age of Cenozoic volcanic rocks of the Pacific Northwest Volcanic Aquifer System study area
A substantial part of the U.S. Pacific Northwest is underlain by Cenozoic volcanic and continental sedimentary rocks and, where widespread, these strata form important aquifers. The legacy geologic mapping presented with this report contains new thematic categorization added to state digital compilations published by the U.S. Geological Survey for Oregon, California, Idaho, Nevada, Utah...
Authors
David Sherrod, Mackenzie Keith
Non-USGS Publications**
Podolak, C.J., Major, J.J., Keith, M.K., O’Connor, J.E., and Wallick, J.R., 2010, One River’s Response to large dam removal, in Vignettes- on-line case study supplements to Bierman, Paul and Montgomery, David, (eds.), Key Concepts in Geomorphology: W.H. Freemen, Vermont, on-line supplement available at http://serc.carleton.edu/39733.
Podolak, C.J., Major, J.J., Keith, M.K., O’Connor, J.E., and Wallick, J.R., 2010, (Sediment) Accounting 101: An Example, in Vignettes- on-line case study supplements to Bierman, Paul and Montgomery, David, (eds.), Key Concepts in Geomorphology: W.H. Freemen, Vermont, on-line supplement available at http://serc.carleton.edu/39732.
**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.
Science and Products
Below are data sets that Mackenzie Keith has authored.
Filter Total Items: 21
High-resolution orthoimagery and digital surface model of Cottage Grove Lake, Oregon, December 2023 High-resolution orthoimagery and digital surface model of Cottage Grove Lake, Oregon, December 2023
In cooperation with the U.S. Army Corps of Engineers (USACE), the U.S. Geological Survey (USGS) surveyed ground control points and coordinated aerial photograph acquisition of Cottage Grove Lake, a multi-purpose reservoir in western Oregon impounded by the 29-meter ([m]; 95-foot [ft]) tall Cottage Grove Dam. Aerial photographs were acquired by the Civil Air Patrol (CAP) in December 2023...
Geomorphic Mapping of Fern Ridge Lake, Oregon, 2023 Geomorphic Mapping of Fern Ridge Lake, Oregon, 2023
In cooperation with the U.S. Army Corps of Engineers, the U.S. Geological Survey evaluated geomorphic conditions within Fern Ridge Lake near Eugene, Oregon, to inform cultural resources management and other natural resources decisions. Reservoir erosion and deposition during seasonal flood-control operations have formed a diverse array of landforms that can impact water storage, aquatic...
Classified Cover Mapping to Support Preliminary Assessment of Aquatic Invasive Vegetation (Ludwigia spp.) in the Willamette River, Oregon: Albany and Salem Reaches Classified Cover Mapping to Support Preliminary Assessment of Aquatic Invasive Vegetation (Ludwigia spp.) in the Willamette River, Oregon: Albany and Salem Reaches
Since 2008, large-scale restoration programs have been implemented along the Willamette River, Oregon, to address historical losses of floodplain habitats for native fish. For much of the Willamette River floodplain, direct enhancement of floodplain habitats through restoration activities is needed because the underlying hydrologic, geomorphic, and vegetation processes that historically...
High-resolution orthoimagery and digital surface models of Fern Ridge Lake, Oregon, during annual low pool, January and February, 2023 High-resolution orthoimagery and digital surface models of Fern Ridge Lake, Oregon, during annual low pool, January and February, 2023
In cooperation with the U.S. Army Corps of Engineers (USACE), the U.S. Geological Survey (USGS) deployed ground control points and coordinated aerial photograph acquisition of Fern Ridge Lake, a multi-purpose reservoir in western Oregon impounded by the 13-m tall Fern Ridge Dam. Aerial photographs were acquired by the Civil Air Patrol (CAP) during winter 2023 when water levels were at or...
Passive acoustic data collected using stationary hydrophones on rivers in the Willamette River Basin, Oregon Passive acoustic data collected using stationary hydrophones on rivers in the Willamette River Basin, Oregon
Underwater passive acoustic monitoring was conducted at multiple sites on rivers in the Willamette River Basin, Oregon. Hydrophones were used to record the sound associated with coarse river-bed sediment (bedload) movement. Bedload supply and transport are key factors determining channel morphology in gravel-bed rivers and can affect reach-scale conditions such as aggradation and...
Human-modified ponded features mapped within the Willamette River floodplain, Oregon, in 2018 Human-modified ponded features mapped within the Willamette River floodplain, Oregon, in 2018
The floodplains of the Willamette River and its major tributaries in western Oregon comprise a diverse array of natural and human-modified features that collectively support a wide range of habitats used by native fish and other wildlife. Like other large alluvial rivers, the Willamette River floodplain has many water bodies disconnected from the main river channel throughout most of the...
Below are publications that Mackenzie Keith has authored.
Filter Total Items: 34
Historical changes in bed elevation and water depth within the Nehalem Bay, Oregon, 1891–2019 Historical changes in bed elevation and water depth within the Nehalem Bay, Oregon, 1891–2019
Estuaries, at the nexus of rivers and the ocean, are depositional areas that respond to changes in streamflow, tides, sea level, and inputs of sediment from marine and watershed sources. Understanding changes in bed elevations, deposited and eroded sediment, and water depth throughout estuaries is relevant for understanding their present-day status and long-term evolution, identifying...
Authors
Mackenzie Keith, Krista Jones, Gabriel W. Gordon
Improving flood-frequency analysis with a 4,000-year record of flooding on the Tennessee River near Chattanooga, Tennessee Improving flood-frequency analysis with a 4,000-year record of flooding on the Tennessee River near Chattanooga, Tennessee
This comprehensive field study applied paleoflood hydrology methods to estimate the frequency of low-probability floods for the Tennessee River near Chattanooga, Tennessee. The study combined stratigraphic records of large, previously unrecorded floods with modern streamflow records and historical flood accounts. The overall approach was to (1) develop a flood chronology for the...
Authors
Tessa Harden, Jim E. O'Connor, Meredith Carr, Mackenzie Keith
River network and reach‐scale controls on habitat for lamprey larvae in the Umpqua River Basin, Oregon River network and reach‐scale controls on habitat for lamprey larvae in the Umpqua River Basin, Oregon
This study developed a spatially explicit framework to support the conservation of Western Brook Lamprey Lampetra richardsoni and Pacific Lamprey Entosphenus tridentatus in the Umpqua River basin, Oregon. This framework identified locations within the river network likely to support “potential burrowing habitat” for lamprey larvae based on geomorphic conditions and evaluated the overlap...
Authors
Krista Jones, Jason Dunham, Jim E. O'Connor, Mackenzie Keith, Joseph Mangano, Kelly Coates, Travis Mackie
Linking sedimentation and erosion patterns with reservoir morphology and dam operations during streambed drawdowns in a flood-control reservoir in the Oregon Cascades Linking sedimentation and erosion patterns with reservoir morphology and dam operations during streambed drawdowns in a flood-control reservoir in the Oregon Cascades
Since water-year (WY) 2011, pool levels at Fall Creek Lake, Oregon, are temporarily lowered to an elevation near historical streambed each fall, creating free-flowing channel conditions that facilitate downstream passage of juvenile spring Chinook salmon. These drawdown operations have also mobilized substantial quantities of predominantly fine (
Authors
Mackenzie Keith, Laurel E. Stratton
Monitoring framework for evaluating hydrogeomorphic and vegetation responses to environmental flows in the Middle Fork Willamette, McKenzie, and Santiam River Basins, Oregon Monitoring framework for evaluating hydrogeomorphic and vegetation responses to environmental flows in the Middle Fork Willamette, McKenzie, and Santiam River Basins, Oregon
This report summarizes a framework for monitoring hydrogeomorphic and vegetation responses to environmental flows in support of the Willamette Sustainable Rivers Program (SRP). The SRP is a partnership between The Nature Conservancy (TNC) and U.S. Army Corps of Engineers (USACE) to provide ecologically sustainable flows downstream of dams while still meeting human needs and...
Authors
J. Rose Wallick, Leslie Bach, Mackenzie K. Keith, Melissa Olson, Joseph Mangano, Krista Jones
GIS database and discussion for the distribution, composition, and age of Cenozoic volcanic rocks of the Pacific Northwest Volcanic Aquifer System study area GIS database and discussion for the distribution, composition, and age of Cenozoic volcanic rocks of the Pacific Northwest Volcanic Aquifer System study area
A substantial part of the U.S. Pacific Northwest is underlain by Cenozoic volcanic and continental sedimentary rocks and, where widespread, these strata form important aquifers. The legacy geologic mapping presented with this report contains new thematic categorization added to state digital compilations published by the U.S. Geological Survey for Oregon, California, Idaho, Nevada, Utah...
Authors
David Sherrod, Mackenzie Keith
Non-USGS Publications**
Podolak, C.J., Major, J.J., Keith, M.K., O’Connor, J.E., and Wallick, J.R., 2010, One River’s Response to large dam removal, in Vignettes- on-line case study supplements to Bierman, Paul and Montgomery, David, (eds.), Key Concepts in Geomorphology: W.H. Freemen, Vermont, on-line supplement available at http://serc.carleton.edu/39733.
Podolak, C.J., Major, J.J., Keith, M.K., O’Connor, J.E., and Wallick, J.R., 2010, (Sediment) Accounting 101: An Example, in Vignettes- on-line case study supplements to Bierman, Paul and Montgomery, David, (eds.), Key Concepts in Geomorphology: W.H. Freemen, Vermont, on-line supplement available at http://serc.carleton.edu/39732.
**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.