Update 3: Overview of Flood Waters over Central Provinces, Thailand

Wed, 26 Oct 2011 20:10:39 GMT
Product ID: 1607 - English
Published: 26 Oct, 2011
GLIDE: FL-2011-000135-THA
FootPrint (Lat x Long, WSG84 Geographic, decimal degrees)
TopLeft: 17.4175 x 99.3422
BottomRight: 13.3015 x 101.7073

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This map presents the standing flood waters over the affected Central Provinces of Thailand based on analysis of satellite data recorded 24 October 2011. Based on a recent time series comparison, there are strong indications that flood waters have strongly risen within the northern, western and eastern sections of Bangkok, and further, have not significantly changed in spatial extent north of the city over the last two weeks. The highest concentration of flooding is located within the provinces of Phara Nakhan Si Ayudhya, Nakhon Sawan, Chaitan, Pathum Thani, Nakon Pathon, Ang Thong, Lopburi, Singburi and Suphanburi. It is likely that flood waters have been systematically underestimated over highly vegetated areas along main river banks, and within built-up areas within Bangkok because of the special characteristics of the satellite data used. This analysis has not yet been validated in the field. Please send ground feedback to UNITAR /UNOSAT.
Satellite Data(1) : Envisat ASAR WS- HH
Imagery Dates: 24 October 2011
Resolution : 150 m
Source: European Space Agency
Provided by: GeoPictures/ KSAT
Settlement Data: EU-JRC / NGA
Road Data: ESRI, OSM
Other Data: OCHA, USGS
Analysis : UNITAR / UNOSAT
Production: UNITAR / UNOSAT
Analysis conducted with ArcGIS v10
This work by UNITAR/UNOSAT is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License.