Global Flood Hazard Frequency and Distribution
Entry ID: CIESIN_CHRR_NDH_FLOOD_HFD

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Summary
Abstract: Global Flood Hazard Frequency and Distribution is a 2.5 minute grid derived from a global listing of extreme flood events between 1985 and 2003 (poor or missing data in the early/mid 1990s) compiled by Dartmouth Flood Observatory and georeferenced to the nearest degree. The resultant flood frequency grid was then classified into 10 classes of approximately equal number of grid cells. The greater the grid cell value in the final data set, the higher the relative frequency of flood occurrence. This dataset is the result of collaboration among the Columbia University Center for Hazards and Risk Research (CHRR) and Columbia University Center for International Earth Science Information Network (CIESIN).

The data in American Standard Code for Information Interchange (ASCII) format and a map in Portable Document Format (PDF) and Portable Network Graphics (PNG) formats are available from the NASA Socioeconomic Data and Applications Center (SEDAC).


Purpose: To provide a means of assessing the relative distribution and frequency of global flood hazard.

Related URL
Link: GET DATA
Description: Data download page.


Link: GET DATA > ECHO
Description: Refine your granule search with ECHO's next generation Earth Science discovery tool (Reverb) using information from this record.


Link: GET RELATED VISUALIZATION
Description: Maps in PDF and PNG formats.


Geographic Coverage
 N: 85.0 S: -58.0  E: 180.0  W: -180.0

Data Set Citation
Dataset Originator/Creator: Center for Hazards and Risk Research - CHRR - Columbia University, and Center for International Earth Science Information Network - CIESIN - Columbia University
Dataset Title: Global Flood Hazard Frequency and Distribution
Dataset Release Date: 2005
Dataset Release Place: Palisades, NY
Dataset Publisher: Center for Hazards and Risk Research (CHRR)/Columbia University
Version: 1.00
Data Presentation Form: raster, map
Dataset DOI: http://dx.doi.org/10.7927/H4668B3D


Temporal Coverage
Start Date: 1985-01-01
Stop Date: 2003-01-01

Start Date: 2005-01-01
Stop Date: 2005-01-01


Location Keywords
GEOGRAPHIC REGION > EQUATORIAL
GEOGRAPHIC REGION > GLOBAL
GEOGRAPHIC REGION > MID-LATITUDE
GEOGRAPHIC REGION > POLAR


Data Resolution
Latitude Resolution: 0.0417 Decimal degrees
Longitude Resolution: 0.0417 Decimal degrees


Science Keywords
TERRESTRIAL HYDROSPHERE >SURFACE WATER >FLOODS    [Definition]


ISO Topic Category
INLAND WATERS


Project
EOSDIS >Earth Observing System Data Information System    [Information]
ESIP >Earth Science Information Partners Program    [Information]
NDH >Natural Disaster Hotspots    [Information]


Quality
The data from the Dartmouth Flood Observatory contains various geospatial representations of flood events. Some floods are depicted as points georeferenced to the nearest degree. Other floods are characterized by polygons. To determine frequency of flood hazard, a 2.5 minute grid overlays the flood data and the number of flood events per grid cell is recorded. A flood event is defined as any portion of any type of flood representation occurring within a grid cell. Therefore, if a grid cell is crossed by a boundary of a flood polygon, then the frequency increases by one. If a point is within the grid cell boundaries, the frequency increases by one. Flooding of the same areas, but at different times, also increase the frequency.

The frequency range is classified into deciles, 10 classes of an approximately equal number of grid cells. Deciles are the chosen method of dissemination due to considerations of confidence with the data.

Note that areas of &No Data& are not necessarily without risk of hazard, but may be artifacts of a mask that excluded from analysis those areas that were of a population density less than 5 persons per square kilometer and without significant agriculture.


Access Constraints
None


Use Constraints
The Trustees of Columbia University in the City of New York and Center for
Hazards and Risk Research (CHRR) hold the copyright of this dataset. Users are
prohibited from any commercial, non-free resale, or redistribution without
explicit written permission from the CHRR and CIESIN. Users should acknowledge
CIESIN and CHRR as the source used in the creation of any reports,
publications, new datasets, derived products, or services resulting from the
use of this dataset. CHRR and CIESIN also request reprints of any publications
and notification of any redistribution efforts.


Keywords
CIESIN > Environmental Protection > Disasters > Floods
CIESIN > Environmental Protection > Disasters > Disaster Area
CIESIN > Environmental Protection > Disasters > Disaster Preparedness
CIESIN > Environmental Protection > Disasters > Disaster Prevention
CIESIN > Environmental Protection > Disasters > Natural Disasters
CIESIN > Environmental Protection > Environmental Modeling > Disaster Modeling
Disasters
Distribution
Floods
Hazard Frequency
Hazard Distribution
Hazards
Hotspots
Weather Hazards
ESIP


Data Set Progress
COMPLETE


Originating Center
SEDAC


Data Center
Socioeconomic Data and Applications Center    [Information]
Data Center URL: http://sedac.ciesin.columbia.edu/
Dataset ID: CIESIN_CHRR_NDH_FLOOD_HFD

Data Center Personnel
Name: SEDAC USER SERVICES
Phone: +1 845-365-8920
Fax: +1 845-365-8922
Email: ciesin.info at ciesin.columbia.edu
Contact Address:
61 Route 9W, P.O. Box 1000
City: Palisades
Province or State: NY
Postal Code: 10964
Country: USA


World Data Center for Human Interactions in the Environment    [Information]
Data Center URL: http://sedac.ciesin.columbia.edu/wdc/
Dataset ID: CIESIN_CHRR_NDH_FLOOD_HFD

Data Center Personnel
Name: ROBERT CHEN
Phone: 1-845-365-8952
Fax: 1-845-365-8922
Email: bchen at ciesin.columbia.edu
Contact Address:
WDC for Human Interactions in the Environment
CIESIN/Columbia University
P. O. Box 1000
61 Route 9W
City: Palisades
Province or State: NY
Postal Code: 10964
Country: USA



Distribution
Distribution_Media: Online FTP
Distribution_Format: ASCII
Fees: 0

Distribution_Media: Online HTTP
Distribution_Format: PDF
Fees: 0

Distribution_Media: Online HTTP
Distribution_Format: PNG
Fees: 0


Personnel
SEDAC USER SERVICES
Role: TECHNICAL CONTACT
Phone: +1 845-365-8920
Fax: +1 845-365-8922
Email: ciesin.info at ciesin.columbia.edu
Contact Address:
61 Route 9W, P.O. Box 1000
City: Palisades
Province or State: NY
Postal Code: 10964
Country: USA


CIESIN METADATA ADMINISTRATION
Role: DIF AUTHOR
Phone: +1 845-365-8988
Fax: +1 845-365-8922
Email: metadata at ciesin.columbia.edu
Contact Address:
61 Route 9W, P.O. Box 1000
City: Palisades
Province or State: New York
Postal Code: 10964
Country: USA


Publications/References
Center for Hazards and Risk Research - CHRR - Columbia University, Center for International Earth Science Information Network - CIESIN - Columbia University, and International Bank for Reconstruction and Development - The World Bank (2005), Global Flood Mortality Risks and Distribution, Center for Hazards and Risk Research (CHRR)/Columbia University, Palisades, NY, doi:http://dx.doi.org/10.7927/H42F7KCP

Center for Hazards and Risk Research - CHRR - Columbia University, Center for International Earth Science Information Network - CIESIN - Columbia University, and International Bank for Reconstruction and Development - The World Bank (2005), Global Flood Proportional Economic Loss Risk Deciles, Center for Hazards and Risk Research (CHRR)/Columbia University, Palisades, NY, doi:http://dx.doi.org/10.7927/H4XS5S9Q

Center for Hazards and Risk Research - CHRR - Columbia University, Center for International Earth Science Information Network - CIESIN - Columbia University, and International Bank for Reconstruction and Development - The World Bank (2005), Global Flood Total Economic Loss Risk Deciles, Center for Hazards and Risk Research (CHRR)/Columbia University, Palisades, NY, doi:http://dx.doi.org/10.7927/H4T151KP

Creation and Review Dates
DIF Creation Date: 2005-10-05
Last DIF Revision Date: 2014-05-29

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