Natural Hazards Flash Flood Potential Index NOAA

Flash flooding is the top weather-related killer, responsible for an average of 140 deaths per year across the United States. Although precipitation forecasting and understanding of flash flood causes have improved in recent years, there are still many unknown factors that play into flash flooding. Despite having accurate and timely rainfall reports, some river basins simply do not respond to rainfall as meteorologists might expect. The Flash Flood Potential Index (FFPI) was developed in order to gain insight into these “problem basins”, giving National Weather Service (NWS) meteorologists insight into the intrinsic properties of a river basin and the potential for swift and copious rainfall runoff.The goal of the FFPI is to quantitatively describe a given sub-basin’s risk of flash flooding based on its inherent, static characteristics such as slope, land cover, land use and soil type/texture. It leverages both Geographic Information Systems (GIS) as well as datasets from various sources. By indexing a given sub-basin’s risk of flash flooding, the FFPI allows the user to see which subbasins are more predisposed to flash flooding than others. Thus, the FFPI can be added to the situational awareness tools which can be used to help assess flash flood risk. 

Data and Resources

Additional Info

Field Value
Source https://gis-calema.opendata.arcgis.com/datasets/05a88ca5b34c47c6b9487ac923ba57ba_0
Last Updated June 23, 2021, 21:57 (UTC)
Created June 23, 2021, 02:45 (UTC)
GUID https://gis-calema.opendata.arcgis.com/datasets/05a88ca5b34c47c6b9487ac923ba57ba_0
Language
dcat_issued 2018-09-26T17:40:18.000Z
dcat_modified 2021-01-22T21:55:08.000Z
dcat_publisher_name CA Governor's Office of Emergency Services
spatial {"type": "Polygon", "coordinates": [[[-124.4096, 32.5332], [-124.4096, 42.0092], [-114.1396, 42.0092], [-114.1396, 32.5332], [-124.4096, 32.5332]]]}