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Historical Flood Typing Classifications for Select River Basins across the Conterminous United States

March 26, 2026

This metadata record describes historical flood type classifications and causal attribution data for the FEMA-funded joint U.S. Geological Survey and U.S. Army Corps of Engineers Mixed Populations Flood Frequency Project. The data listed here include classifications of historical flood peaks based on causal mechanisms determined using manual and semi-automated methods at select locations within the conterminous United States. The child items referenced below correspond to different classification methods. See the list below or metadata files in each sub-folder for more details.

​Manual Flood Type Classifications for Select U.S. River Basins — Manually-determined classifications of historical annual maxima flood peaks based on their causal mechanisms at select river basins across CONUS.

Publication Year 2026
Title Historical Flood Typing Classifications for Select River Basins across the Conterminous United States
DOI 10.5066/P13G2ZJW
Authors Scott D Hamshaw, Sarah Y Murphy, Kevin K Baker, Nicholas J Taylor, Michael Bartles, Avital Breverman, Melissa Mika, Alex Morrison, Gregory Karlovits
Product Type Data Release
Record Source USGS Asset Identifier Service (AIS)
USGS Organization Water Resources Mission Area - Headquarters
Rights This work is marked with CC0 1.0 Universal
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