USGS Post Wildfire Debris Flow Potential for 2018

This service displays post-fire debris flow data for fires that have occurred in 2018. Post-fire debris-flow likelihood, volume, and combined hazards are estimated at both the drainage-basin scale and in a spatially distributed manner along the drainage network within each basin. For more information about these data please visit the scientific backgound information page.  Estimates of the probability and volume of debris flows that may be produced by a storm in a recently burned area, using a model with characteristics related to basin shape, burn severity, soil properties, and rainfall.

Wildfire can significantly alter the hydrologic response of a watershed to the extent that even modest rainstorms can produce dangerous flash floods and debris flows. The USGS conducts post-fire debris-flow hazard assessments for select fires in the Western U.S. We use geospatial data related to basin morphometry, burn severity, soil properties, and rainfall characteristics to estimate the probability and volume of debris flows that may occur in response to a design storm.

More USGS information and FAQs here.

Data and Resources

Field Value
dcat_issued 2019-08-07T23:19:59.000Z
dcat_modified 2019-08-07T23:29:17.000Z
dcat_publisher_name CA Governor's Office of Emergency Services
encoding utf8
guid https://gis-calema.opendata.arcgis.com/datasets/0a1a195bcf3b4bc0b5c1b1650b804350
spatial {"type": "Polygon", "coordinates": [[[-124.1315, 33.6064], [-124.1315, 48.7637], [-104.8903, 48.7637], [-104.8903, 33.6064], [-124.1315, 33.6064]]]}
Groups
  • NSF
  • United States
Tags
  • 2018
  • Debris
  • Debris Flow
  • Flow
  • Hazards
  • NSF
  • Post
  • Potential
  • Recovery
  • USGS
  • United States
  • Wildfire
isopen False
license_id CC0-1.0
license_title CC0-1.0
metadata_created 2026-10-30T17:27:05.378760
metadata_modified 2026-10-30T17:27:05.378764
notes <p style='box-sizing: border-box; margin-top: 0px; margin-bottom: 10px;'><font size='4'>This <a href='https://calema.maps.arcgis.com/home/item.html?id=0a1a195bcf3b4bc0b5c1b1650b804350' style='' target='_blank'>service</a> displays post-fire debris flow data for fires that have occurred in 2018. Post-fire debris-flow likelihood, volume, and combined hazards are estimated at both the drainage-basin scale and in a spatially distributed manner along the drainage network within each basin. For more information about these data please visit the <a href='https://www.usgs.gov/natural-hazards/landslide-hazards/science/scientific-background?qt-science_center_objects=0#qt-science_center_objects' style='' target='_blank'>scientific backgound information</a> page.  Estimates of the probability and volume of debris flows that may be produced by a storm in a recently burned area, using a model with characteristics related to basin shape, burn severity, soil properties, and rainfall.</font></p><p style='box-sizing: border-box; margin-top: 0px; margin-bottom: 10px;'><font size='4'>Wildfire can significantly alter the hydrologic response of a watershed to the extent that even modest rainstorms can produce dangerous flash floods and debris flows. The USGS conducts post-fire debris-flow hazard assessments for select fires in the Western U.S. We use geospatial data related to basin morphometry, burn severity, soil properties, and rainfall characteristics to estimate the probability and volume of debris flows that may occur in response to a design storm.<br /></font></p><p style='box-sizing: border-box; margin-top: 0px; margin-bottom: 10px;'><font size='4'>More USGS information and FAQs <a href='https://www.usgs.gov/natural-hazards/landslide-hazards/science/emergency-assessment-post-fire-debris-flow-hazards?qt-science_center_objects=0#qt-science_center_objects' style='' target='_blank'>here</a>.</font><br /></p>
num_resources 3
num_tags 12
title USGS Post Wildfire Debris Flow Potential for 2018
url https://gis-calema.opendata.arcgis.com/datasets/0a1a195bcf3b4bc0b5c1b1650b804350