Greer 2025-05-13 v1.0 postfire debris-flow hazard assessment

Postfire debris-flow hazard assessment for the Greer fire event that began on or near 2025-05-13, version 1.0. The files, data fields, and metadata included in this assessment are described by version 1.0.0 of the PWFDF Data Specification. You can find the specification here: https://doi.org/10.5066/P13KUWCO
Wildfire can substantially alter the hydrologic response of watersheds to rainfall, and debris-flow activity is the 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 conducts debris-flow hazard assessments for recent wildfires. This repository contains the results of those assessments since 2025. The data map the likelihood and potential volume of debris flows across the burn area for a series of design rainstorms. The data also include estimates of the rainfall rates required to trigger debris flows. Results are generally representative of the conditions immediately after the fire; however, additional versions of the hazard assessment are available for some fires. These additional versions may represent preliminary assessments before the fire is fully contained and/or a reassessment of the hazard after one or more years of postfire vegetation recovery.