2019 Supplemental Appropriations Activities
The Additional Supplemental Appropriations for Disaster Relief Act of 2019 (H.R. 2157) was signed by the President on June 6, 2019. The USGS received $98.5 million to support recovery and rebuilding activities in the wake of the 2018 Kīlauea volcano eruption, Hurricanes Florence and Michael, the Anchorage earthquake, and California wildfires.
USGS activities funded under the FY2019 Additional Supplemental Appropriations for Disaster Relief Requirements Act include:
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- New Hawaiian Volcano Observatory (HVO)
- Response Activities, Equipment Repair, and Hardening from the Kīlauea eruption
- Geologic Investigations of the Kīlauea Summit Collapse
- Equipment Repair and Replacement from Hurricanes Florence and Michael
- Coastal Hazard Assessments and Forecasts from Hurricane Florence
- Assessment of Landslide and Debris-Flow Impacts from California Wildfires
- Fire Behavior Models: Enhanced Support for Recovery of U.S. Department of the Interior (DOI) Lands
- Equipment Replacement and Geologic Investigations Related to the Alaska Earthquake
- Acquisition and Publication of 3D Elevation Program (3DEP) Lidar for Hurricanes and Wildfires
USGS Factsheet: 2019 Disaster Relief Act: USGS Recovery Activities
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Eruptive activity at the summit of Kīlauea, within Hawaiʻi Volcanoes National Park, has been episodic since an eruption began on December 23, 2024.
DUNEX Aerial Imagery of the Outer Banks
The During Nearshore Event Experiment (DUNEX) project is a large collaborative scientific study focusing on understanding the consequences of coastal storms on the morphology of coastal ecosystems. By flying large sections of the coast and collecting still images using structure from motion (SfM) techniques, we hope to contribute high resolution (20cm) elevation maps for time series comparisons...
Filter Total Items: 38
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...
Grain-size data for sediment samples collected in Whiskeytown Lake, northern California, in 2018 and 2019 Grain-size data for sediment samples collected in Whiskeytown Lake, northern California, in 2018 and 2019
This data release supersedes version 1.0, published in July 2021 at https://doi.org/10.5066/P9BHOPEP. Versioning details are documented in the accompanying Whiskeytown_VersionHistory.txt file The Carr Fire ignited in northern California in July 2018, and ultimately burned almost 300,000 acres (approximately half on federal lands), resulting in a federal major-disaster declaration (DR...
Digital compilation of historical ice terminus positions of tidewater glaciers in Glacier Bay National Park and Preserve, Alaska Digital compilation of historical ice terminus positions of tidewater glaciers in Glacier Bay National Park and Preserve, Alaska
In coastal subarctic environments such as the fjords of Southeast Alaska, tidewater glaciers can control local hydrology, climatic patterns, ecology, and geologic hazards like landslides and consequent tsunami waves. Documenting and studying glacial retreat in fjords can help scientists understand the dynamic systems that are intrinsically tied to glacial ice processes and forecast...
Spectral reflectance data of rock and soil in southcentral Alaska Spectral reflectance data of rock and soil in southcentral Alaska
An ASD FieldSpec 4 Hi-Res NG Spectroradiometer was used to collect the reflectance properties of soil and rock in southcentral Alaska, USA (Figure 1) around the city of Anchorage (Figure 2) and the Prince William Sound (Figure 3). Reflectance is a property of the material being observed, being the ratio of the amount of light leaving a target to the amount of light striking the target...
Field-verified inventory of postfire hydrologic response for the 2020 CZU Lightning Complex, River, Camel, and Dolan Fires following a 26-29 January 2021 atmospheric river storm sequence Field-verified inventory of postfire hydrologic response for the 2020 CZU Lightning Complex, River, Camel, and Dolan Fires following a 26-29 January 2021 atmospheric river storm sequence
This data release is a field-verified inventory of postfire hydrologic response for the 2020 CZU (San Mateo–Santa Cruz Unit) Lightning Complex, River Fire, Camel Fire, and Dolan Fire following a 26-29 January 2021 atmospheric river storm sequence. Postfire hydrologic response types include a) no response, b) minor response, and c) major response. A “minor” response was deemed capable of...
Future coastal hazards along the U.S. Atlantic coast Future coastal hazards along the U.S. Atlantic coast
This product consists of several datasets that map future coastal flooding and erosion hazards due to sea level rise (SLR) and storms for three States (Florida, Georgia, and Virginia) along the Atlantic coast of the United States. The SLR scenarios encompass a plausible range of projections by 2100 based on the best available science and with enough resolution to support a suite of...
Colored shaded-relief bathymetric map and surrounding aerial imagery of Whiskeytown Lake, California Colored shaded-relief bathymetric map and surrounding aerial imagery of Whiskeytown Lake, California
The Carr wildfire began on July 23, 2018, and burned almost 300,000 acres (approximately half on Federal lands) in northern California during the subsequent 6-week period. Over 97 percent of the area within Whiskeytown National Recreation Area, California, burned during the 2018 Carr wildfire, including the entire landscape that surrounds and drains into Whiskeytown Lake. Shortly after...
Filter Total Items: 56
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Constraining the earthquake recording threshold of intraslab earthquakes with turbidites in southcentral Alaska’s lakes and fjords Constraining the earthquake recording threshold of intraslab earthquakes with turbidites in southcentral Alaska’s lakes and fjords
Strong ground motion from intraslab earthquakes, which do not produce primary paleoseismic evidence, may initiate gravity-driven turbidity flows in subaqueous basins. The resulting deposits (turbidites) can provide a paleoseismic proxy if the conditions that initiate these flows are known. To better constrain the initiating conditions, we use two recent intraslab earthquakes in...
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Extreme rainfall during two atmospheric river events in January 2021 and January 2022 triggered a series of debris flows in the Columbia River Gorge, Oregon. The flows had significant impacts, including multiple highway closures and one fatality. This story map highlights rainfall data and observations of debris flow deposits by the Oregon Department of Geology and Mineral Industries (DOGAMI).
Hurricane Florence Numerical Modeling Hurricane Florence Numerical Modeling
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An interactive geonarrative (Esri Story Map) looking at the Barry Arm landslide, located in northwestern Prince William Sound on the northwest side of Barry Arm in Harriman Fjord, Alaska, and about 30 miles (48.3 kilometers) from the coastal town of Whittier. If it were to produce a rockslide, it could pose significant hazards to nearby communities and boat traffic.
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Interactive access to coastal change science and data for our Nation’s coasts. Information and products are organized within three coastal change hazard themes: 1) extreme storms, 2) shoreline change, and 3) sea-level rise. Displays probabilities of coastal erosion.
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U.S. Geological Survey (USGS) National Seismic Hazard Model Project (NSHMP) codes for performing probabilistic seismic hazard (PSHA) and related analyses. These codes are intended for use with seismic hazard models developed by the NSHMP for the U.S. and its territories. This project includes a variety of command line applications and web service classes and relies on the nshmp-lib...
Related
Eruption Information
Eruptive activity at the summit of Kīlauea, within Hawaiʻi Volcanoes National Park, has been episodic since an eruption began on December 23, 2024.
DUNEX Aerial Imagery of the Outer Banks
The During Nearshore Event Experiment (DUNEX) project is a large collaborative scientific study focusing on understanding the consequences of coastal storms on the morphology of coastal ecosystems. By flying large sections of the coast and collecting still images using structure from motion (SfM) techniques, we hope to contribute high resolution (20cm) elevation maps for time series comparisons...
Filter Total Items: 38
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...
Grain-size data for sediment samples collected in Whiskeytown Lake, northern California, in 2018 and 2019 Grain-size data for sediment samples collected in Whiskeytown Lake, northern California, in 2018 and 2019
This data release supersedes version 1.0, published in July 2021 at https://doi.org/10.5066/P9BHOPEP. Versioning details are documented in the accompanying Whiskeytown_VersionHistory.txt file The Carr Fire ignited in northern California in July 2018, and ultimately burned almost 300,000 acres (approximately half on federal lands), resulting in a federal major-disaster declaration (DR...
Digital compilation of historical ice terminus positions of tidewater glaciers in Glacier Bay National Park and Preserve, Alaska Digital compilation of historical ice terminus positions of tidewater glaciers in Glacier Bay National Park and Preserve, Alaska
In coastal subarctic environments such as the fjords of Southeast Alaska, tidewater glaciers can control local hydrology, climatic patterns, ecology, and geologic hazards like landslides and consequent tsunami waves. Documenting and studying glacial retreat in fjords can help scientists understand the dynamic systems that are intrinsically tied to glacial ice processes and forecast...
Spectral reflectance data of rock and soil in southcentral Alaska Spectral reflectance data of rock and soil in southcentral Alaska
An ASD FieldSpec 4 Hi-Res NG Spectroradiometer was used to collect the reflectance properties of soil and rock in southcentral Alaska, USA (Figure 1) around the city of Anchorage (Figure 2) and the Prince William Sound (Figure 3). Reflectance is a property of the material being observed, being the ratio of the amount of light leaving a target to the amount of light striking the target...
Field-verified inventory of postfire hydrologic response for the 2020 CZU Lightning Complex, River, Camel, and Dolan Fires following a 26-29 January 2021 atmospheric river storm sequence Field-verified inventory of postfire hydrologic response for the 2020 CZU Lightning Complex, River, Camel, and Dolan Fires following a 26-29 January 2021 atmospheric river storm sequence
This data release is a field-verified inventory of postfire hydrologic response for the 2020 CZU (San Mateo–Santa Cruz Unit) Lightning Complex, River Fire, Camel Fire, and Dolan Fire following a 26-29 January 2021 atmospheric river storm sequence. Postfire hydrologic response types include a) no response, b) minor response, and c) major response. A “minor” response was deemed capable of...
Future coastal hazards along the U.S. Atlantic coast Future coastal hazards along the U.S. Atlantic coast
This product consists of several datasets that map future coastal flooding and erosion hazards due to sea level rise (SLR) and storms for three States (Florida, Georgia, and Virginia) along the Atlantic coast of the United States. The SLR scenarios encompass a plausible range of projections by 2100 based on the best available science and with enough resolution to support a suite of...
Colored shaded-relief bathymetric map and surrounding aerial imagery of Whiskeytown Lake, California Colored shaded-relief bathymetric map and surrounding aerial imagery of Whiskeytown Lake, California
The Carr wildfire began on July 23, 2018, and burned almost 300,000 acres (approximately half on Federal lands) in northern California during the subsequent 6-week period. Over 97 percent of the area within Whiskeytown National Recreation Area, California, burned during the 2018 Carr wildfire, including the entire landscape that surrounds and drains into Whiskeytown Lake. Shortly after...
Filter Total Items: 56
Numerical simulation of sound-side barrier-island inundation and breaching during Hurricane Dorian (2019) Numerical simulation of sound-side barrier-island inundation and breaching during Hurricane Dorian (2019)
Hurricane-induced morphological changes and associated community hazards along sandy, barrier-island coastlines have been studied primarily from the perspective of ocean-side attack by storm-driven ocean surge and large waves. Thus, our understanding of long-term barrier island morphological change focuses on beach erosion, overwash, and inlet formation. In contrast, outwash events with...
Authors
John C. Warner, Christopher R. Sherwood, Christie A. Hegermiller, Zafer Defne, Joseph B. Zambon, Ruoying He, George Xue, Daoyang Bao, Dongxiao Yin, Melissa Moulton
Rainfall thresholds for postfire debris-flow initiation vary with short-duration rainfall climatology Rainfall thresholds for postfire debris-flow initiation vary with short-duration rainfall climatology
The size, frequency, and geographic scope of severe wildfires are expanding across the globe, including in the Western United States. Recently burned steeplands have an increased likelihood of debris flows, which pose hazards to downstream communities. The conditions for postfire debris-flow initiation are commonly expressed as rainfall intensity-duration thresholds, which can be...
Authors
David B. Cavagnaro, Scott W. McCoy, Donald N. Lindsay, Luke A. McGuire, Jason W. Kean, Daniel T. Trugman
Predicted exposure of communities in southeastern United States to climate-related coastal hazards Predicted exposure of communities in southeastern United States to climate-related coastal hazards
A rigorous analysis of 21st Century multi-hazard exposure for U.S. Southeast Atlantic coastal communities indicates that up to 70% of residents will be exposed daily to shallow and emerging groundwater by ~2100, 15 times higher than from surficial flooding alone. This threat further exacerbates other coastal stressors, such as flooding, subsidence, and beach erosion, that impact these...
Authors
Patrick L. Barnard, Peter W Swarzenski
Constraining the earthquake recording threshold of intraslab earthquakes with turbidites in southcentral Alaska’s lakes and fjords Constraining the earthquake recording threshold of intraslab earthquakes with turbidites in southcentral Alaska’s lakes and fjords
Strong ground motion from intraslab earthquakes, which do not produce primary paleoseismic evidence, may initiate gravity-driven turbidity flows in subaqueous basins. The resulting deposits (turbidites) can provide a paleoseismic proxy if the conditions that initiate these flows are known. To better constrain the initiating conditions, we use two recent intraslab earthquakes in...
Authors
Drake Moore Singleton, Daniel S. Brothers, Peter J. Haeussler, Robert C. Witter, Jenna C. Hill
Projections of multiple climate-related coastal hazards for the US Southeast Atlantic Projections of multiple climate-related coastal hazards for the US Southeast Atlantic
Faced with accelerating sea level rise and changing ocean storm conditions, coastal communities require comprehensive assessments of climate-driven hazard impacts to inform adaptation measures. Previous studies have focused on flooding but rarely on other climate-related coastal hazards, such as subsidence, beach erosion and groundwater. Here, we project societal exposure to multiple...
Authors
Patrick L. Barnard, Kevin M. Befus, Jeffrey J. Danielson, Anita C Engelstad, Li H. Erikson, Amy C. Foxgrover, Maya Kumari Hayden, Daniel J. Hoover, Tim Leijnse, Chris Massey, Robert T. McCall, Norberto Nadal-Caraballo, Kees Nederhoff, Andrea C. O'Neill, Kai Alexander Parker, Manoochehr Shirzaei, Leonard O. Ohenhen, Peter W Swarzenski, Jennifer Anne Thomas, Maarten van Ormondt, Sean Vitousek, Killian Vos, Nathan J. Wood, Jeanne M. Jones, Jamie Jones
Scalable, data-assimilated models predict large-scale shoreline response to waves and sea-level rise Scalable, data-assimilated models predict large-scale shoreline response to waves and sea-level rise
Coastal change is a complex combination of multi-scale processes (e.g., wave-driven cross-shore and longshore transport; dune, bluff, and cliff erosion; overwash; fluvial and inlet sediment supply; and sea-level-driven recession). Historical sea-level-driven coastal recession on open ocean coasts is often outpaced by wave-driven change. However, future sea-level-driven coastal recession...
Authors
Sean Vitousek, Kilian Vos, Kristen D. Splinter, Kai Alexander Parker, Andrea C. O'Neill, Amy C. Foxgrover, Maya Kumari Hayden, Jennifer Anne Thomas, Li H. Erikson, Patrick L. Barnard
Dixie Fire Post-Fire Debris Flows: A Tale of Two Storms Dixie Fire Post-Fire Debris Flows: A Tale of Two Storms
The Dixie fire burned steep hillslopes in the northern Sierra Nevada California during the summer of 2021. The burn area was impacted by two significant storms in October 2021 and June 2022. These storm events resulted in very different types of rainfall and very different postfire flow events. This story map uses maps, photos, and rainfall data to highlight the storms and their impacts.
Columbia River Gorge Landslides Columbia River Gorge Landslides
Extreme rainfall during two atmospheric river events in January 2021 and January 2022 triggered a series of debris flows in the Columbia River Gorge, Oregon. The flows had significant impacts, including multiple highway closures and one fatality. This story map highlights rainfall data and observations of debris flow deposits by the Oregon Department of Geology and Mineral Industries (DOGAMI).
Hurricane Florence Numerical Modeling Hurricane Florence Numerical Modeling
The U.S. Geological Survey (USGS) has partnered with North Carolina State University (NCSU), Louisiana State University (LSU) and University Corporation for Atmospheric Research (UCAR) to investigate hurricane-induced compound flooding and sediment dispersal using coupled hydrology and ocean models.
Monitoring Efforts at the Barry Arm Landslide Monitoring Efforts at the Barry Arm Landslide
An interactive geonarrative (Esri Story Map) looking at the Barry Arm landslide, located in northwestern Prince William Sound on the northwest side of Barry Arm in Harriman Fjord, Alaska, and about 30 miles (48.3 kilometers) from the coastal town of Whittier. If it were to produce a rockslide, it could pose significant hazards to nearby communities and boat traffic.
Central California Coast Debris Flows - January 2021 Central California Coast Debris Flows - January 2021
An atmospheric river (AR) moved into California late on the evening of January 26, 2021, bringing intermittent heavy rainfall that resulted in flooding, debris flows, and heavy snowfall at high elevations.
Coastal Change Hazards Portal Coastal Change Hazards Portal
Interactive access to coastal change science and data for our Nation’s coasts. Information and products are organized within three coastal change hazard themes: 1) extreme storms, 2) shoreline change, and 3) sea-level rise. Displays probabilities of coastal erosion.
By
Natural Hazards Mission Area, Coastal and Marine Hazards and Resources Program, Pacific Coastal and Marine Science Center, St. Petersburg Coastal and Marine Science Center, Woods Hole Coastal and Marine Science Center, Supplemental Appropriations for Disaster Recovery Activities, Gulf of America, Hurricane Dorian, Hurricane Harvey, Hurricane Ian, Hurricane Irma, Hurricane Isaias, Hurricane Jose, Hurricane Laura, Hurricane Marco, Hurricane Maria, Hurricane Matthew, Hurricane Michael, Hurricane Nate, Hurricane Sandy, Hurricanes
USGS Earthquake Hazard Toolbox: nshmp-apps USGS Earthquake Hazard Toolbox: nshmp-apps
NSHM Hazard Tool, a suite of web tools for the NSHMP.
nshmp-haz-v2 nshmp-haz-v2
U.S. Geological Survey (USGS) National Seismic Hazard Model Project (NSHMP) codes for performing probabilistic seismic hazard (PSHA) and related analyses. These codes are intended for use with seismic hazard models developed by the NSHMP for the U.S. and its territories. This project includes a variety of command line applications and web service classes and relies on the nshmp-lib...