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Product ID: 2253 - English
Published: 3 Aug, 2015
GLIDE: FL-2015-000098-VNM

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This map provides an overview of satellite detected waters in Song L?ch Tray delta near Hai Phong City in northern Vietnam. UNITAR-UNOSAT identified 12,304 hectares of flood affected land within the analyzed region. A total of 7 analyzed districts in the provinces of Hai Phong and Quang Ninh were impacted by the floods. The district of Yen Hung in Quang Ninh province was the worst affected with 6,132 hectares of flooding, followed by Thuy Nguyen district (2,671 ha) in Hai Phong province, and Hoanh Bo district (1,384 ha) in Quang Ninh province. Approximately 25 kilometers of roads were possibly affected by flood waters in the 7 analyzed districts. Of this total, roughly 9.2 kilometers were identified in the district of Thuy Nguyen, located in Hai Phong province. 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) : ALOS-2/ PALSAR-2
Imagery Dates: 31 July 2015
Resolution: 6.25 m
Copyright: JAXA
Source: JAXA
Satellite Data (2) : ALOS-2/ PALSAR-2
Imagery Dates: 19 June 2015
Resolution: 6.25 m
Copyright: JAXA
Source: JAXA
Road Data: OpenStreetMap
Other Data: USGS, UNCS, NASA, NGA
Analysis : UNITAR-UNOSAT
Production: UNITAR-UNOSAT
Analysis conducted with ArcGIS v10.3