Niger imagery and land cover data

**UNOSAT code FL20221004NER** This map illustrates satellite-detected surface waters in Dosso Region, 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 12,500 km2, about 225 km2 of lands appear to be flooded. Based on Worldpop population data and the detected surface waters within the map extent, about 35,000 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 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: FL20210908NER** This map illustrates the extent of surface waters in Guidan Roumdji, Madarounfa and Ville de Maradi departments, Maradi Region as observed from a Sentinel-2 image acquired on 09 September 2021. Within the analyzed area of about 5,900 km2, based on Worldpop population data and the detected surface waters, about 90,000 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).

This map illustrates the satellite-detected surface waters extent and evolution over Niamey and surroundings in Niger as observed from the Sentinel-1 images acquired on 14 and 26 August 2017. Within the analysed area, an increase of surface waters extent was observed from the 26 August 2017 image: ~7,870 ha of surface water were observed the 14 August 2017 and reached ~10,210 ha the 26 August 2017. All over the analysed zone, it corresponds to an evolution of about 30%. In Niamey an increase of water surface of 320 ha was observed corresponding to an evolution of ~20% by comparison to the surface water detected on 14 August 2017. This is a preliminary analysis and has not yet been validated in the field. Please send ground feedback to UNITAR - UNOSAT.

**UNOSAT code: FL20220728NER** This map illustrates satellite-detected surface waters in Tillabéri Region, Niger as observed from a Sentinel-2 image acquired on 19 August 2022 at 11:37 local time. Within the analyzed area of about 26,000 km2, about 377 km2 of lands appear to be flooded. Based on Worldpop population data and the detected surface waters in the analyzed area, about 33,500 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).

**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).