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Product ID: 2255 - English
Published: 4 Aug, 2015
GLIDE: FL-2015-000098-VNM

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This map provides an overview of satellite detected waters near Ha Long City in Quang Ninh Province, northern Vietnam. UNITAR-UNOSAT identified 902 hectares of flood affected land within the analyzed region. Analysis of the majority of Ha Long District revealed 303 hectares of flooding and 599 hectares of flood waters in most of Hoanh Bo District. Approximately 0.95 kilometers of roads were possibly affected in these areas as well. It is likely that flood waters have been systematically underestimated along highly vegetated areas along main river banks, and within built-up urban areas because of the special characteristics of the satellite data used. This is a preliminary analysis and has not yet been validated in the field. Please send ground feedback to UNITAR-UNOSAT.
Satellite Data (1): Radarsat-2
Imagery Dates: 02 August 2015 and 28 March 2015
Resolution: 12.5 m
Copyright: MacDonald, Dettwiler and Associates, Ltd.
Source: MDA Satellite
Road Data: OpenStreetMap
Other Data: USGS, UNCS, NASA, NGA
Analysis : UNITAR-UNOSAT
Production: UNITAR-UNOSAT
Analysis conducted with ArcGIS v10.3