Floods over Cox's Bazar area, Bangladesh - UNOSAT Live Web Map

✦ DISCOVERED BY ORIONAIUnited Nations Satellite Centre (UNOSAT)EnvironmentBangladesh
Bangladesh

About this dataset

**UNOSAT code: FL20210729BGD** This is a web map showing analysis and results related to floods in Cox's Bazar area, Chittagong division, Bangladesh

Documentation

UNOSAT datasets and maps are produced using a variety of methods. In general, analysts closely review satellite imagery, often comparing two or more images together, and determine notable changes between the images. For damage assessments, refugee or IDP assessments, and similar analyses, these changes are then manually documented in the vector data by the analyst. For flood extractions, landcover mapping and similar analyses, a variety of automated remote sensing techniques are used to extract the relevant information which is then reviewed and revised as necessary by the analyst. In all cases, resulting data is then loaded into a standardized UNOSAT geodatabase and exported asshapefiles for dissemination. This is a preliminary assessment and has not yet been validated in the field. It is important to consider the characteristics of the source imagery used in the analyses when interpreting results. For damage assessments it should be noted that only significant damage to the structural integrity of the buildings analyzed can be seen in imagery, while minor damage such as cracks or holes may not be visible at all. For flood extractions using radar data it is important to note that urban areas and highly vegetated areas may mask the flood signature and result in underestimation of flood waters. Users with specific questions or concerns should contact unosat@unitar.org to seek clarification.

Related datasets

✦ Suggested by OrionAI
Satellite Detected Water Extent in Maheshkhali, Chakaria and Cox'S Bazar Sadar Upazilas

This map illustrates satellite-detected surface water extent around Maheshkhali, Chakaria and Cox'S Bazar Sadar Upazilas in the District of Cox's Bazar, Chittagong Division in the south eastern part of Bangladesh as detected by a TerraSAR-X image acquired on the 1st June 2017. A total of ~20,000 ha of lands seem to be affected with flood waters. Some of the affected lands are mainly agricultural fields. The analysis of this satellite image reveals also that about 100 km of roads with mainly tertiary roads seem to be also potentially affected. We can also estimate, within this map extent and using the WorldPop data, about 265,000 people living in flood affected zones. This is a preliminary analysis and has not yet been validated in the field. Please send ground feedback to UNITAR - UNOSAT.

Water · United Nations Satellite Centre (UNOSAT)
ViewSave
Bangladesh - Satellite Detected Water Extent in Cox's Bazar District, Chittagong Division

This map illustrates satellite-detected surface water extent in the District of Cox's Bazar, Chittagong Division, located in the southeastern part of Bangladesh after the tropical cyclone Mora-17 using a Sentinel-1 satellite image acquired on the 30 May 2017. A total of 23,058 ha surface waters were observed. In many zones, the affected lands are mainly agricultural. The analysis of this image reveals also that about 234 km of roads mainly tertiary roads seem to be potentially affected. The population exposure analysis using WorldPop data shows that ~267,000 people are potentially affected by floods within map extent. This is a preliminary analysis and has not yet been validated in the field. Please send ground feedback to UNITAR - UNOSAT.

Water · United Nations Satellite Centre (UNOSAT)
ViewSave
UNOSAT Live webmap, Floods in Pakistan, July 2024

**UNOSAT code: FL20240804PAK** This application provides cumulative satellite-detected water using VIIRS in Pakistan from July 2024 based on NOAA-20 [VIIRS] data.

Environment · United Nations Satellite Centre (UNOSAT)
ViewSave
Floods in Norway, August 2023 - UNOSAT Live Web Map

**UNOSAT code FL20230811NOR** Live web map showing analysis related to floods in Norway

Environment · United Nations Satellite Centre (UNOSAT)
ViewSave
UNOSAT Live Web map - Floods in Nigeria, 2024

**UNOSAT code: FL20240902NGA, GDACS ID: 1102720** This application provides flood impact assessments for Nigeria in September 2024.

Environment · United Nations Satellite Centre (UNOSAT)
ViewSave
UNOSAT Live Web Map-Flood in Bhutan 2025

**UNOSAT code: FL20251006BTN** This application provides flood impact assessments in Bhutan Important note: The boundaries and names shown, and the designations used on this map do not imply official endorsement or acceptance by the United Nations. The United Nations Satellite Centre - UNOSAT is not responsible for the misuse or misrepresentation of the map

Environment · United Nations Satellite Centre (UNOSAT)
ViewSave

Indexed by OrionGIS from Humanitarian Data Exchange (HDX). Data is loaded from the publisher's own server when you use it. Permanent link