Data

This data release is a compilation of damage and losses stemming from historical accounts of postfire flash flood and debris-flow activity in the United States. The register spans 147 years (1879–2025) and 12 states (Arizona, California, Colorado, Idaho, Montana, Nevada, New Mexico, North Carolina, Oregon, Utah, Washington, and Wyoming). We compiled this information from hundreds of...

Inventory description This data release consists of an inventory of runoff-generated postfire debris-flow observations compiled from burned areas across the western United States. The included table, “USGS_RG_PFDF_Inventory_v1.csv”, contains observations of postfire debris-flow response indicating whether a debris flow did occur (1) or did not occur (0) in a burned watershed in response...

We performed ring shear strength tests of three specimens from a flysch unit involved in a large landslide that occupies a hillslope above the north side of Barry Arm in Prince William Sound, Alaska. A contract laboratory performed additional ring shear strength tests and index property tests. The test specimens are referred to as 22BABC001, 22BABC002, and RMC-02-220723. Ring shear tests...

This dataset contains a point cloud, digital elevation model (DEM), orthoimagery, and uncrewed aerial vehicle (UAV) imagery covering 0.1 km2 of the Black Hollow drainage located along the upper Cache la Poudre River, in Larimer County, Colorado, USA. These products show erosional and depositional features, most notably wood jams (accumulation of large woody debris in a channel)...

Beginning at about 2:15 am on May 27, 2016, a landslide from the headscarp of the May 25, 2014, West Salt Creek rock-avalanche deposit (White and others, 2015; Coe and others, 2016; Lewis and others, 2023; Coe and others, 2026) moved into a sag pond at the head of the deposit. At about 2:30 am, the landslide caused the sag pond, which already had an elevated water level due to runoff...

This data release contains a radar-based remote sensing product used to detect regions of surface change in southern Yukon Territory, Canada and southeast Alaska, United States between November 28, 2025 and December 9, 2025, based on the availability of Sentinel-1 satellite data. Much of this surface change is interpreted to have been triggered by the M7.0 Hubbard Glacier Earthquake that...

As part of an effort by the U.S. Geological Survey (USGS) to better understand topographic and structural conditions that promote slow spreading and sagging of mountain ridges (Varnes and others, 1989), USGS researchers began surveying monitoring points at Bald Eagle ridge in the Sawatch Range of Colorado in 1975 (Radbruch-Hall and others, 1976; Varnes and others, 1990). Bald Eagle ridge...

Wildfire can substantially alter the hydrologic response of watersheds to rainfall, and debris-flow activity is among the most destructive consequences of these events. To assist federal, state, and local agencies in planning for postfire hazards, the U.S. Geological Survey (USGS) conducts debris-flow hazard assessments for recent wildfires. This collection holds all postfire debris-flow...

Description This data release contains a dataset of 227 postfire debris-flow volumes compiled from 34 burn areas across six states in the western United States. Specifically, it includes debris-flow volumes collected from the following fires: Arizona: 2010 Schultz, 2011 Horseshoe 2, 2011 Monument, 2011 Wallow, 2017 Frye, 2019 Museum, 2019 Woodbury, 2020 Bush, 2021 Flag, 2021 Horton, 2021

This National Landslide Damages and Losses (NLDL) database was developed by extracting relevant U.S. landslide loss and damage information from a variety of sources and compiling it within a consistent framework and database structure. Sources of information on economic losses, fatalities, and key event characteristics include, but are not limited to U.S. Geological Survey (USGS) Open...

This data release includes minidisk infiltration data as well as geographic data showing the location of each measurement from the Woolsey Fire, Los Angeles County, CA, USA. The Woolsey Fire burned between November 8-21, 2018. Minidisk infiltration data were obtained on November 19-21, 2018, while portions of the fire were uncontained, and prior to any rainfall. The infiltration data are...

This data release includes aerial photos taken from a small aircraft for reconnaissance purposes (Figure 1). The photos were taken from several different types of cameras ranging from iPhones to Cannon EOS6. Camera attributes can be found in the exif data associated with each file. Photos were taken over a period of 3 days (3-5 October, 2024) to obtain general situational awareness of...