Services Directory - Natural_Hazards_Flash_Flood_Potential_Index

Natural_Hazards_Flash_Flood_Potential_Index_NOAA (Map Service)

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Current Version: 10.81

Service Description: 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.

Map Name: Map

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Natural_Hazards_Flash_Flood_Potential_Index_NOAA(0)

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Description: 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.

Copyright Text: NOAA

Spatial Reference:
102100

Single Fused Map Cache: true

Capabilities: Map,TilesOnly,Tilemap

Tile Info:

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Width: 256
DPI: 96
Levels of Detail: (# Levels: 24)

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Format: PNG
Compression Quality: 0
Origin:
Spatial Reference:
102100

Initial Extent:

Full Extent:

Min Scale: 9244648.868618
Max Scale: 288895.277144

Min LOD: 6
Max LOD: 11

Units: esriMeters

Supported Image Format Types: PNG

Export Tiles Allowed: true
Max Export Tiles Count: 100000

Document Info:

Title: Natural Hazards Flash Flood Potential Index NOAA
Author: CA_Office_of_Emergency_Services_GIS
Comments:
Subject: The Flash Flood Potential Index (FFPI) incorporates physiographic characteristics of an individual drainage basin to determine its hydrologic response.
Category:
Keywords: FFPI, Flash Flood Potential Index, NOAA, Data Library, Basedata, CalOES Data Library