Satellite detected waters extents, as of 28 August 2019 over Sennar State, Sudan

**UNOSAT code: FL20190815SDN** This map illustrates satellite-detected surface water in Khartoum State, Sudan as observed from SPOT-6 imagery acquired on 28 August 2019. Within the analysed extent of about 3,200 km2, a total about 97 km2 of lands appear to be flooded as of 28 August 2019. This is a preliminary analysis and has not yet been validated in the field. Please send ground feedback to UNITAR - UNOSAT.

**UNOSAT code: FL20190815SDN** This map illustrates satellite-detected surface water in White Nile District, Sudan as observed from SPOT-6 imagery acquired on 28 August 2019. Within the analysed area of about 240 sq km, a total 35 sq km of lands appear to be flooded as of 28 August 2019. This is a preliminary analysis and has not yet been validated in the field. Please send ground feedback to UNITAR - UNOSAT.

**UNOSAT code: FL20190815SDN** This map illustrates the extent of surface waters detected over El Gazira, White Nile and Sennar states located in the southern part of Sudan as detected by VIIRS-NOAA satellite between 22 & 25 August 2019. In the analysed area, a total of about 7000 km2 are likely flooded and about 250,000 people might be affected by taking into account the WorldPop population estimates. This is a preliminary analysis that has not yet been validated in the field. Please send any field-based comments to UNITAR-UNOSAT.

This map illustrates satellite-detected possible flood water & saturated soil over Sennar State, extracted from Radarsar-2 imagery acquired 12 August 2016. UNOSAT has analysed the area using a Radarsat-2 image acquired on 12 August 2016 to identify and delineate the Possible Flood Water & Saturated / Wet Soil. According to satellite derived analysis some areas within Sennar State seem to be flooded. In addition, and the Blue Nile increased its size especially in the right bank, without apparently causing floods inside build up areas.The exact limit of flood waters is uncertain because of the low spatial resolution of the satellite data used for this analysis. Detected water bodies likely reflect an underestimation of all flood-affected areas within the map extent. This analysis has not yet been validated in the field. Please send ground feedback to UNITAR - UNOSAT.

**UNOSAT code: FL20191023SSD** This map illustrates satellite-detected surface water in Unity, Jonglei and Lakes State of South Sudan as observed from Sentinel-1 imagery acquired on 23 October 2019. Within the analysed extent of about 85,000 km2, a total about 1,180 km2 of land appear to be flooded. This is a preliminary analysis and has not yet been validated in the field. Please send ground feedback to UNITAR - UNOSAT. Important Note: Flood analysis from Sentinel-1 imagery acquired on 23 October 2019 may seriously underestimate the presence of standing floodwater in built-up areas due to backscattering of the radar signal

**UNOSAT code: FL20190815SDN** This map illustrates satellite-detected surface water in White Nile State, Sudan as observed from Radarsat-2 imagery acquired on 27 August 2019. Within the analysed area of about 3,000 km2, a total 176 sq km of lands appear to be flooded as of 27 August 2019. This is a preliminary analysis and has not yet been validated in the field. Please send ground feedback to UNITAR - UNOSAT.