2022 Supplemental Appropriations Activities
The Extending Government Funding and Delivering Emergency Assistance Act (Public Law 117-43) was enacted on September 30, 2021. The USGS received $26.3 million in supplemental funding to support direct recovery and rebuilding decisions in areas affected by declared disasters—earthquakes, wildfires, hurricanes, and floods—that occurred between 2019 and 2021.
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USGS activities funded under the Extending Government Funding and Delivering Emergency Assistance Act include:
USGS Factsheet: 2022 Emergency Assistance Act—USGS Recovery Activities
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Filter Total Items: 32
Coastal Bathymetry and Backscatter Data Collected June-August 2023 From the Chandeleur Islands, Louisiana Coastal Bathymetry and Backscatter Data Collected June-August 2023 From the Chandeleur Islands, Louisiana
Scientists from the U.S. Geological Survey St. Petersburg Coastal and Marine Science Center in St. Petersburg, Florida (USGS–SPCSMC), conducted a geophysical survey of the northern Chandeleur Islands, Louisiana during two survey legs: June 12-21 and July 31-August 11, 2023. During this study, multibeam bathymetry and sub-bottom geophysical data (Forde and others, 2024) were collected...
Coastal Single-beam Bathymetry Data Collected in 2023 from the Chandeleur Islands, Louisiana Coastal Single-beam Bathymetry Data Collected in 2023 from the Chandeleur Islands, Louisiana
Scientists from the U.S. Geological Survey (USGS) St. Petersburg Coastal and Marine Science Center (SPCMSC) conducted single-beam and multibeam bathymetry (Stalk and others, 2025) surveys around the northern Chandeleur Islands, Louisiana, from June 12 to 20 and from July 31 to August 9, 2023, as part of Field Activity Number (FAN) 2023-325-FA. The purpose of data collection was to...
Fuels Data for the 2021 KNP Complex Fire in Sequoia and Kings Canyon National Parks, Collected in 2024 (ver. 1.1, January 2026) Fuels Data for the 2021 KNP Complex Fire in Sequoia and Kings Canyon National Parks, Collected in 2024 (ver. 1.1, January 2026)
Post-fire vegetation structure and fuels data are essential for understanding the recovery process after major disturbances. To meet this need, 40 plots within and around the perimeter of the 2021 KNP Complex Fire were surveyed between July 12 and July 28, 2024. Data was collected on sites previously established by the U.S. Geological Survey Kings Canyon and Sequoia Field Station, as...
Proportional Basal Area Mortality Following Four Large Wildfires in California, USA Proportional Basal Area Mortality Following Four Large Wildfires in California, USA
This dataset provides estimates of the proportion of basal area that survived along with burn severity indices for 585 plots following four large fires in California, including the Carr (2018), Dixie (2021), Caldor (2021), and KNP (2021) fires.
Field Validation Data for Live Tree Presence/Absence Following Two Large Wildfires in California, USA Field Validation Data for Live Tree Presence/Absence Following Two Large Wildfires in California, USA
This data file contains observations recorded during field surveys of post-fire vegetation in the 2021 Caldor and 2022 Mosquito Fires in the Sierra Nevada of California. The surveys were performed in summer 2023. All tree species were surveyed and treated the same.
Inventory of debris flows in burned (2020-2022) and unburned (1995-2020) areas in the western Cascade Range of Oregon Inventory of debris flows in burned (2020-2022) and unburned (1995-2020) areas in the western Cascade Range of Oregon
This data release contains two debris-flow inventories summarizing observations from burned and unburned areas in the western Cascade Range of Oregon (OR). The burned inventory focuses on debris flows that occurred during the first two years after the 2020 Archie Creek, Holiday Farm, Beachie Creek/Lionshead, and Riverside fires (OR_field_observations.csv). The unburned inventory (1995...
Postfire erosion estimates for large California wildfires that occurred between 1984 and 2021 Postfire erosion estimates for large California wildfires that occurred between 1984 and 2021
This data release presents a compilation of postfire sediment mobilization data from wildfires greater than 100 km2 that occurred in California or regions of southern Oregon that drain to the California coast between 1984 and 2021. This compilation includes three sources of sediment mobilization data: hillslope erosion modeled using the Water Erosion Prediction Project (WEPP) postfire...
Bathymetry and Acoustic Backscatter data for Jenkinson Lake, California collected during three USGS field activities, 2022-604-FA, 2022-649-FA, and 2023-634-FA Bathymetry and Acoustic Backscatter data for Jenkinson Lake, California collected during three USGS field activities, 2022-604-FA, 2022-649-FA, and 2023-634-FA
Bathymetry and acoustic-backscatter data were collected during three separate SWATHPlus surveys of Jenkinson Lake, California to determine any impacts on the lake floor following the 2021 Caldor fire. Data were collected and processed by the U.S. Geological Survey (USGS), Pacific Coastal and Marine Science Center (PCMSC) with fieldwork activity numbers 2022-604-FA (January 2022), 2022...
Digital Surface Models and orthomosaic images from UAS surveys of Jenkinson Lake, El Dorado County, CA Digital Surface Models and orthomosaic images from UAS surveys of Jenkinson Lake, El Dorado County, CA
This data release presents Digital Surface Models (DSM) and orthomosaic images derived from uncrewed aerial system (UAS) surveys conducted at Jenkinson Lake in El Dorado County, California. The surveys were conducted to perform repeat structure-from-motion topographic mapping at the upper end of the reservoir, near the inlets of Sly Park Creek and Hazel Creek, with the purpose of...
Compilation of runoff-generated debris-flow inventories for 18 fires across Arizona, California, Colorado, New Mexico, Utah, and Washington, USA Compilation of runoff-generated debris-flow inventories for 18 fires across Arizona, California, Colorado, New Mexico, Utah, and Washington, USA
Description This data release is an inventory of runoff-generated postfire debris flows compiled from 18 burn areas across six western U.S. states. Debris-flow data from the following fires are included: Arizona: 2019 Museum, 2021 Flag, and 2022 Pipeline Fires California: 2014 Silverado, 2015 Valley, 2019 Briceburg, 2020 Dolan, 2020 El Dorado, 2020 Lake, and 2021 Dixie Fires Colorado...
International compilation of peak discharge estimates of floods and runoff-generated debris flows, 1931-2023 International compilation of peak discharge estimates of floods and runoff-generated debris flows, 1931-2023
This data release contains an international compilation of 656 peak discharge estimates of floods and runoff-generated debris flows. The data (“DimensionlessDischarge.csv” and “CrossSections.csv”) were obtained from the literature and measured in the study Cavagnaro and others (2024). The dataset also includes information about flow depth, flow type (flood or debris flow), flow cross...
Chirp Sub-Bottom Profile Geophysical Data Collected in 2023 From the Chandeleur Islands, Louisiana Chirp Sub-Bottom Profile Geophysical Data Collected in 2023 From the Chandeleur Islands, Louisiana
As part of the 2022 Disaster Supplemental project, scientists from the U.S. Geological Survey (USGS) St. Petersburg Coastal and Marine Science Center (SPCMSC) conducted a nearshore geophysical survey to map the shoreface and inner shelf, as well as characterize stratigraphy near the Chandeleur Islands, Louisiana (LA) in June and August 2023. The purpose of this study was to conduct a...
Filter Total Items: 16
Post-fire sediment yield from a central California watershed: Field measurements and validation of the WEPP model Post-fire sediment yield from a central California watershed: Field measurements and validation of the WEPP model
In a warming climate, an intensifying fire regime and higher likelihood of extreme rain are expected to increase watershed sediment yield in many regions. Understanding regional variability in landscape response to fire and post-fire rainfall is essential for managing water resources and infrastructure. We measured sediment yield resulting from sequential wildfire and extreme rain and...
Authors
Amy E. East, Joshua B. Logan, Helen Willemien Dow, Douglas P. Smith, Pat Iampietro, Jonathan A. Warrick, Thomas Lorenson, Leticia Hallas, Benjamin Kozlowicz
How long do runoff-generated debris-flow hazards persist after wildfire? How long do runoff-generated debris-flow hazards persist after wildfire?
Runoff-generated debris flows are a potentially destructive and deadly response to wildfire until sufficient vegetation and soil-hydraulic recovery have reduced susceptibility to the hazard. Elevated debris-flow susceptibility may persist for several years, but the controls on the timespan of the susceptible period are poorly understood. To evaluate the connection between vegetation...
Authors
Andrew Paul Graber, Matthew A. Thomas, Jason W. Kean
The rainfall intensity-duration control of debris flows after wildfire The rainfall intensity-duration control of debris flows after wildfire
Increased wildfire activity in the western United States has exposed regional gaps in our understanding of postfire debris-flow generation. To address this problem, we characterized flows in an unstudied area to test the rainfall intensity-duration control of the hazard. Our rainfall measurements and field observations from the northern Sierra Nevada (California, USA) show that debris...
Authors
Matthew A. Thomas, Donald N. Lindsay, David B. Cavagnaro, Jason W. Kean, Scott W. McCoy, Andrew Paul Graber
2022 Emergency Assistance Act — USGS recovery activities 2022 Emergency Assistance Act — USGS recovery activities
The Extending Government Funding and Delivering Emergency Assistance Act (Public Law 117-43) was enacted on September 30, 2021. The U.S. Geological Survey received $26.3 million in supplemental funding to repair and replace facilities and equipment, collect high-resolution elevation data, and complete scientific assessments to support direct recovery and rebuilding decisions in areas...
Authors
Jo Ellen Hinck, Joseph Stachyra
Related
Filter Total Items: 32
Coastal Bathymetry and Backscatter Data Collected June-August 2023 From the Chandeleur Islands, Louisiana Coastal Bathymetry and Backscatter Data Collected June-August 2023 From the Chandeleur Islands, Louisiana
Scientists from the U.S. Geological Survey St. Petersburg Coastal and Marine Science Center in St. Petersburg, Florida (USGS–SPCSMC), conducted a geophysical survey of the northern Chandeleur Islands, Louisiana during two survey legs: June 12-21 and July 31-August 11, 2023. During this study, multibeam bathymetry and sub-bottom geophysical data (Forde and others, 2024) were collected...
Coastal Single-beam Bathymetry Data Collected in 2023 from the Chandeleur Islands, Louisiana Coastal Single-beam Bathymetry Data Collected in 2023 from the Chandeleur Islands, Louisiana
Scientists from the U.S. Geological Survey (USGS) St. Petersburg Coastal and Marine Science Center (SPCMSC) conducted single-beam and multibeam bathymetry (Stalk and others, 2025) surveys around the northern Chandeleur Islands, Louisiana, from June 12 to 20 and from July 31 to August 9, 2023, as part of Field Activity Number (FAN) 2023-325-FA. The purpose of data collection was to...
Fuels Data for the 2021 KNP Complex Fire in Sequoia and Kings Canyon National Parks, Collected in 2024 (ver. 1.1, January 2026) Fuels Data for the 2021 KNP Complex Fire in Sequoia and Kings Canyon National Parks, Collected in 2024 (ver. 1.1, January 2026)
Post-fire vegetation structure and fuels data are essential for understanding the recovery process after major disturbances. To meet this need, 40 plots within and around the perimeter of the 2021 KNP Complex Fire were surveyed between July 12 and July 28, 2024. Data was collected on sites previously established by the U.S. Geological Survey Kings Canyon and Sequoia Field Station, as...
Proportional Basal Area Mortality Following Four Large Wildfires in California, USA Proportional Basal Area Mortality Following Four Large Wildfires in California, USA
This dataset provides estimates of the proportion of basal area that survived along with burn severity indices for 585 plots following four large fires in California, including the Carr (2018), Dixie (2021), Caldor (2021), and KNP (2021) fires.
Field Validation Data for Live Tree Presence/Absence Following Two Large Wildfires in California, USA Field Validation Data for Live Tree Presence/Absence Following Two Large Wildfires in California, USA
This data file contains observations recorded during field surveys of post-fire vegetation in the 2021 Caldor and 2022 Mosquito Fires in the Sierra Nevada of California. The surveys were performed in summer 2023. All tree species were surveyed and treated the same.
Inventory of debris flows in burned (2020-2022) and unburned (1995-2020) areas in the western Cascade Range of Oregon Inventory of debris flows in burned (2020-2022) and unburned (1995-2020) areas in the western Cascade Range of Oregon
This data release contains two debris-flow inventories summarizing observations from burned and unburned areas in the western Cascade Range of Oregon (OR). The burned inventory focuses on debris flows that occurred during the first two years after the 2020 Archie Creek, Holiday Farm, Beachie Creek/Lionshead, and Riverside fires (OR_field_observations.csv). The unburned inventory (1995...
Postfire erosion estimates for large California wildfires that occurred between 1984 and 2021 Postfire erosion estimates for large California wildfires that occurred between 1984 and 2021
This data release presents a compilation of postfire sediment mobilization data from wildfires greater than 100 km2 that occurred in California or regions of southern Oregon that drain to the California coast between 1984 and 2021. This compilation includes three sources of sediment mobilization data: hillslope erosion modeled using the Water Erosion Prediction Project (WEPP) postfire...
Bathymetry and Acoustic Backscatter data for Jenkinson Lake, California collected during three USGS field activities, 2022-604-FA, 2022-649-FA, and 2023-634-FA Bathymetry and Acoustic Backscatter data for Jenkinson Lake, California collected during three USGS field activities, 2022-604-FA, 2022-649-FA, and 2023-634-FA
Bathymetry and acoustic-backscatter data were collected during three separate SWATHPlus surveys of Jenkinson Lake, California to determine any impacts on the lake floor following the 2021 Caldor fire. Data were collected and processed by the U.S. Geological Survey (USGS), Pacific Coastal and Marine Science Center (PCMSC) with fieldwork activity numbers 2022-604-FA (January 2022), 2022...
Digital Surface Models and orthomosaic images from UAS surveys of Jenkinson Lake, El Dorado County, CA Digital Surface Models and orthomosaic images from UAS surveys of Jenkinson Lake, El Dorado County, CA
This data release presents Digital Surface Models (DSM) and orthomosaic images derived from uncrewed aerial system (UAS) surveys conducted at Jenkinson Lake in El Dorado County, California. The surveys were conducted to perform repeat structure-from-motion topographic mapping at the upper end of the reservoir, near the inlets of Sly Park Creek and Hazel Creek, with the purpose of...
Compilation of runoff-generated debris-flow inventories for 18 fires across Arizona, California, Colorado, New Mexico, Utah, and Washington, USA Compilation of runoff-generated debris-flow inventories for 18 fires across Arizona, California, Colorado, New Mexico, Utah, and Washington, USA
Description This data release is an inventory of runoff-generated postfire debris flows compiled from 18 burn areas across six western U.S. states. Debris-flow data from the following fires are included: Arizona: 2019 Museum, 2021 Flag, and 2022 Pipeline Fires California: 2014 Silverado, 2015 Valley, 2019 Briceburg, 2020 Dolan, 2020 El Dorado, 2020 Lake, and 2021 Dixie Fires Colorado...
International compilation of peak discharge estimates of floods and runoff-generated debris flows, 1931-2023 International compilation of peak discharge estimates of floods and runoff-generated debris flows, 1931-2023
This data release contains an international compilation of 656 peak discharge estimates of floods and runoff-generated debris flows. The data (“DimensionlessDischarge.csv” and “CrossSections.csv”) were obtained from the literature and measured in the study Cavagnaro and others (2024). The dataset also includes information about flow depth, flow type (flood or debris flow), flow cross...
Chirp Sub-Bottom Profile Geophysical Data Collected in 2023 From the Chandeleur Islands, Louisiana Chirp Sub-Bottom Profile Geophysical Data Collected in 2023 From the Chandeleur Islands, Louisiana
As part of the 2022 Disaster Supplemental project, scientists from the U.S. Geological Survey (USGS) St. Petersburg Coastal and Marine Science Center (SPCMSC) conducted a nearshore geophysical survey to map the shoreface and inner shelf, as well as characterize stratigraphy near the Chandeleur Islands, Louisiana (LA) in June and August 2023. The purpose of this study was to conduct a...
Filter Total Items: 16
Post-fire sediment yield from a central California watershed: Field measurements and validation of the WEPP model Post-fire sediment yield from a central California watershed: Field measurements and validation of the WEPP model
In a warming climate, an intensifying fire regime and higher likelihood of extreme rain are expected to increase watershed sediment yield in many regions. Understanding regional variability in landscape response to fire and post-fire rainfall is essential for managing water resources and infrastructure. We measured sediment yield resulting from sequential wildfire and extreme rain and...
Authors
Amy E. East, Joshua B. Logan, Helen Willemien Dow, Douglas P. Smith, Pat Iampietro, Jonathan A. Warrick, Thomas Lorenson, Leticia Hallas, Benjamin Kozlowicz
How long do runoff-generated debris-flow hazards persist after wildfire? How long do runoff-generated debris-flow hazards persist after wildfire?
Runoff-generated debris flows are a potentially destructive and deadly response to wildfire until sufficient vegetation and soil-hydraulic recovery have reduced susceptibility to the hazard. Elevated debris-flow susceptibility may persist for several years, but the controls on the timespan of the susceptible period are poorly understood. To evaluate the connection between vegetation...
Authors
Andrew Paul Graber, Matthew A. Thomas, Jason W. Kean
The rainfall intensity-duration control of debris flows after wildfire The rainfall intensity-duration control of debris flows after wildfire
Increased wildfire activity in the western United States has exposed regional gaps in our understanding of postfire debris-flow generation. To address this problem, we characterized flows in an unstudied area to test the rainfall intensity-duration control of the hazard. Our rainfall measurements and field observations from the northern Sierra Nevada (California, USA) show that debris...
Authors
Matthew A. Thomas, Donald N. Lindsay, David B. Cavagnaro, Jason W. Kean, Scott W. McCoy, Andrew Paul Graber
2022 Emergency Assistance Act — USGS recovery activities 2022 Emergency Assistance Act — USGS recovery activities
The Extending Government Funding and Delivering Emergency Assistance Act (Public Law 117-43) was enacted on September 30, 2021. The U.S. Geological Survey received $26.3 million in supplemental funding to repair and replace facilities and equipment, collect high-resolution elevation data, and complete scientific assessments to support direct recovery and rebuilding decisions in areas...
Authors
Jo Ellen Hinck, Joseph Stachyra