Eaux d'inondations détectées par satellite le 25 octobre 2024 dans les départements de Matam et Kanel, Sénégal

**UNOSAT code: FL20241022SEN** Cette carte illustre l'étendue des eaux d'inondations détectées par satellite en utilisant une image optique Sentinel-2 acquise le 20 octobre 2024 dans les départements de Matam et Kanel, Région de Matam. Dans la zone analysée d'environ 2,700 km², un total d'environ 500 km² de terres semblent être inondées. D'après les données démographique de Worldpop et les eaux d'inondations détectées par imagerie satellite, environ 45,000 personnes sont potentiellement exposées ou vivent à proximité de zones inondées. D'après les prévisions de débit du 24 octobre 2024 provenant de l'ECMWF à la station hydrométrique Senegal A Matam le long du fleuve Sénégal, le débit moyen actuel a tendance à diminuer au cours des 10 prochains jours. Prière de bien vouloir noter que ceci est une analyse préliminaire qui n'a pas été validée sur le terrain. Merci d'envoyer vos commentaires au Centre Satellitaire des Nations Unies (UNOSAT).

**UNOSAT code: FL20241022SEN** This application provides geospatial information regarding the floods in Senegal 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.

**UNOSAT code: FL20241022SEN** This map illustrates floodwater depth in in Saint-Louis and Matam Regions, Senegal observed from VIIRS flood depth data as of 23 October 2024. Important note: This map is prepared with a 30-m VIIRS satellite-derived Floodwater Depth product. It has been downscaled with software that uses VIIRS daily composite flood products at 375-m resolution as a basis. Products are under development and processed in near real-time at the Cooperative Institute for Meteorological Satellite Studies (CIMSS). This is a preliminary analysis intended to be used for guidance purposes and has yet to be validated with ground truth data. Please send field observations to United Nations Satellite Centre (UNOSAT).

**UNOSAT code FL20221004NER** This map illustrates satellite-detected surface waters in Tillabéri & Niamey Regions, Niger as observed from a Sentinel-2 image acquired on 05 October 2022 at 11:27 local time. Within the extent of this map of about 40,000 km2, about 180 km2 of lands appear to be flooded. Based on Worldpop population data and the detected surface waters within the map extent, about 50,000 people are potentially exposed or living close to flooded areas. This is a preliminary analysis and has not yet been validated in the field. Please send ground feedback to United Nations Satellite Centre (UNOSAT).

**UNOSAT code: FL20220728NER** This map illustrates satellite-detected surface waters in Dosse, Niamey and Tillabéri Regions, Niger as observed from a Sentinel-2 image acquired on 11 August 2022 at 11:27 local time. Within the analyzed area of about 45,000 km2, about 330 km2 of lands appear to be flooded. Based on Worldpop population data and the detected surface waters in the analyzed area, about 75,000 people are potentially exposed or living close to flooded areas. This is a preliminary analysis and has not yet been validated in the field. Please send ground feedback to United Nations Satellite Centre (UNOSAT).

**UNOSAT code: TC20220221MDG** This map illustrates satellite-detected surface waters in Vangaindrano district, Atsimo Atsinanana region, Madagascar as observed from a Sentinel-2 image acquired on 1 March 2022 at 10:00 local time. Within the analyzed cloud free zones of about 300km2, a total of about 25 km2 of lands appear to be flooded. Based on Worldpop population data and the detected surface waters, about 5,500 people are potentially exposed or living close to flooded areas. This is a preliminary analysis and has not yet been validated in the field. Please send ground feedback to United Nations Satellite Centre (UNOSAT).