RUNOFF Radar and USGS Networked
Observations of Flash Floods
CIROH CUAHSI Summer Institute 2026
Experimental dataset. Version 1.0 under active development.

Welcome to RUNOFF

Radar and USGS Networked Observations of Flash Floods

RUNOFF is a community benchmark dataset for flash flood modeling in the United States. It pairs thousands of reported flash flood events with radar precipitation, USGS streamflow observations, and documented impacts, all linked to the NOAA NextGen HydroFabric.

Access RUNOFF Dataset About RUNOFF Flash Flood Records
5,097flash flood events
1,273event-linked gages
5,897basins under 1000 km2
528HUC8 watersheds
WY 2021-2025dual-pol MRMS era