When Fern Ridge Lake levels are low the Long Tom River can be seen meandering through the reservoir. Check out the USGS water elevation gage at Fern Ridge Lake Near Elmira, OR - 14168000.
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
Fern Ridge Geomorphology
Willamette FIP Effectiveness Monitoring Framework
Geomorphic Response to Fall Creek Lake Drawdowns
A Thermal Mosaic for the Willamette River
Marmot Dam Removal
Below are data sets that Mackenzie Keith has authored.
Modeled bedload-transport capacity for the Siletz River, Oregon Modeled bedload-transport capacity for the Siletz River, Oregon
One- and two-dimensional hydraulic models for the Siletz River, Oregon One- and two-dimensional hydraulic models for the Siletz River, Oregon
Topographic Survey of Select Erosional Features within Fern Ridge Lake, Oregon, 2023 and 2024 Topographic Survey of Select Erosional Features within Fern Ridge Lake, Oregon, 2023 and 2024
High-resolution orthoimagery and digital surface model of Cougar Reservoir, Oregon, December 2023 High-resolution orthoimagery and digital surface model of Cougar Reservoir, Oregon, December 2023
High-resolution orthoimagery and digital surface models of Hills Creek Lake, Oregon, December 2023 High-resolution orthoimagery and digital surface models of Hills Creek Lake, Oregon, December 2023
High-resolution orthoimagery and digital surface model of Dorena Lake, Oregon, December 2023 High-resolution orthoimagery and digital surface model of Dorena Lake, Oregon, December 2023
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
Geomorphic Mapping of Fern Ridge Lake, Oregon, 2023 Geomorphic Mapping of Fern Ridge Lake, Oregon, 2023
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
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
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
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
When Fern Ridge Lake levels are low the Long Tom River can be seen meandering through the reservoir. Check out the USGS water elevation gage at Fern Ridge Lake Near Elmira, OR - 14168000.
Drawdown of Fall Creek Lake result in lake levels being lowered to the elevation near the historical, pre-dam streambed.
Drawdown of Fall Creek Lake result in lake levels being lowered to the elevation near the historical, pre-dam streambed.
Below are publications that Mackenzie Keith has authored.
Assessment of channel morphology, hydraulics, and bedload transport along the Siletz River, western Oregon Assessment of channel morphology, hydraulics, and bedload transport along the Siletz River, western Oregon
Framework developed for geomorphic mapping of Fern Ridge Lake, Oregon, 2023 Framework developed for geomorphic mapping of Fern Ridge Lake, Oregon, 2023
Reservoir evolution, downstream sediment transport, downstream channel change, and synthesis of geomorphic responses of Fall Creek and Middle Fork Willamette River to water years 2012–18 streambed drawdowns at Fall Creek Lake, Oregon Reservoir evolution, downstream sediment transport, downstream channel change, and synthesis of geomorphic responses of Fall Creek and Middle Fork Willamette River to water years 2012–18 streambed drawdowns at Fall Creek Lake, Oregon
Historical changes to channel planform and bed elevations downstream from dams along Fall Creek and Middle Fork Willamette River, Oregon, 1926–2016 Historical changes to channel planform and bed elevations downstream from dams along Fall Creek and Middle Fork Willamette River, Oregon, 1926–2016
Coupled upstream-downstream geomorphic responses to deep reservoir drawdowns at Fall Creek Dam, Oregon Coupled upstream-downstream geomorphic responses to deep reservoir drawdowns at Fall Creek Dam, Oregon
Monitoring framework to evaluate effectiveness of aquatic and floodplain habitat restoration activities for native fish along the Willamette River, northwestern Oregon Monitoring framework to evaluate effectiveness of aquatic and floodplain habitat restoration activities for native fish along the Willamette River, northwestern Oregon
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
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
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
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
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
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
Non-USGS Publications**
**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
Fern Ridge Geomorphology
Willamette FIP Effectiveness Monitoring Framework
Geomorphic Response to Fall Creek Lake Drawdowns
A Thermal Mosaic for the Willamette River
Marmot Dam Removal
Below are data sets that Mackenzie Keith has authored.
Modeled bedload-transport capacity for the Siletz River, Oregon Modeled bedload-transport capacity for the Siletz River, Oregon
One- and two-dimensional hydraulic models for the Siletz River, Oregon One- and two-dimensional hydraulic models for the Siletz River, Oregon
Topographic Survey of Select Erosional Features within Fern Ridge Lake, Oregon, 2023 and 2024 Topographic Survey of Select Erosional Features within Fern Ridge Lake, Oregon, 2023 and 2024
High-resolution orthoimagery and digital surface model of Cougar Reservoir, Oregon, December 2023 High-resolution orthoimagery and digital surface model of Cougar Reservoir, Oregon, December 2023
High-resolution orthoimagery and digital surface models of Hills Creek Lake, Oregon, December 2023 High-resolution orthoimagery and digital surface models of Hills Creek Lake, Oregon, December 2023
High-resolution orthoimagery and digital surface model of Dorena Lake, Oregon, December 2023 High-resolution orthoimagery and digital surface model of Dorena Lake, Oregon, December 2023
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
Geomorphic Mapping of Fern Ridge Lake, Oregon, 2023 Geomorphic Mapping of Fern Ridge Lake, Oregon, 2023
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
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
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
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
When Fern Ridge Lake levels are low the Long Tom River can be seen meandering through the reservoir. Check out the USGS water elevation gage at Fern Ridge Lake Near Elmira, OR - 14168000.
When Fern Ridge Lake levels are low the Long Tom River can be seen meandering through the reservoir. Check out the USGS water elevation gage at Fern Ridge Lake Near Elmira, OR - 14168000.
Drawdown of Fall Creek Lake result in lake levels being lowered to the elevation near the historical, pre-dam streambed.
Drawdown of Fall Creek Lake result in lake levels being lowered to the elevation near the historical, pre-dam streambed.
Below are publications that Mackenzie Keith has authored.
Assessment of channel morphology, hydraulics, and bedload transport along the Siletz River, western Oregon Assessment of channel morphology, hydraulics, and bedload transport along the Siletz River, western Oregon
Framework developed for geomorphic mapping of Fern Ridge Lake, Oregon, 2023 Framework developed for geomorphic mapping of Fern Ridge Lake, Oregon, 2023
Reservoir evolution, downstream sediment transport, downstream channel change, and synthesis of geomorphic responses of Fall Creek and Middle Fork Willamette River to water years 2012–18 streambed drawdowns at Fall Creek Lake, Oregon Reservoir evolution, downstream sediment transport, downstream channel change, and synthesis of geomorphic responses of Fall Creek and Middle Fork Willamette River to water years 2012–18 streambed drawdowns at Fall Creek Lake, Oregon
Historical changes to channel planform and bed elevations downstream from dams along Fall Creek and Middle Fork Willamette River, Oregon, 1926–2016 Historical changes to channel planform and bed elevations downstream from dams along Fall Creek and Middle Fork Willamette River, Oregon, 1926–2016
Coupled upstream-downstream geomorphic responses to deep reservoir drawdowns at Fall Creek Dam, Oregon Coupled upstream-downstream geomorphic responses to deep reservoir drawdowns at Fall Creek Dam, Oregon
Monitoring framework to evaluate effectiveness of aquatic and floodplain habitat restoration activities for native fish along the Willamette River, northwestern Oregon Monitoring framework to evaluate effectiveness of aquatic and floodplain habitat restoration activities for native fish along the Willamette River, northwestern Oregon
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
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
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
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
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
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
Non-USGS Publications**
**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.