Satellite detected water extent between 01 August 2019 and 04 October 2021 along Lake Albert in D.R. of the Congo

Name: Satellite detected water extent between 01 August 2019 and 04 October 2021 along Lake Albert in D.R. of the Congo
Creator: United Nations Satellite Centre (UNOSAT)
License: http://www.opendefinition.org/licenses/cc-by-sa

✦ DISCOVERED BY ORIONAIUnited Nations Satellite Centre (UNOSAT)WaterDemocratic Republic of the Congo

Democratic Republic of the Congo

About this dataset

**UNOSAT code: FL20211008COD** This map illustrates satellite-detected surface waters in Ituri Province as observed from a Sentinel-2 image acquired on 04 October 2021. Within 5 km around Lake Albert, about 40 km2 of lands appear to be flooded. The water extent appears to have increased since August 2019 and based on Worldpop population data and the detected surface waters in the analyzed area, the potentially exposed population is mainly located in the Zone de Santé of Nyarambe with ~5,200 people, Gethy with ~ 3,300 people and Tchomia with ~1,550 people. This is a preliminary analysis and has not yet been validated in the field. Please send ground feedback to the United Nations Satellite Centre (UNOSAT)

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.

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Satellite detected water extent 12 Jan. 2024 and 18 Sep. 2024 along Lake Albert in D.R. of the Congo

**UNOSAT code: FL20240919COD** This map illustrates satellite-detected surface waters in Ituri Province as observed from a Sentinel-2 image acquired on 18 Sep. 2024. Within the analysed area, about 15km² of lands appear to be affected with water increase. Based on Worldpop population data and the detected surface waters, about 2,300 people are potentially exposed to the water increase. This is a preliminary analysis and has not yet been validated in the field. Please send ground feedback to the United Nations Satellite Centre (UNOSAT).

Water · United Nations Satellite Centre (UNOSAT)

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Satellite detected water extent between 04 October 2021 and 01 August 2019 in Kasenyi town, Ituri province, DR Congo

**UNOSAT code: FL20211008COD** This map illustrates satellite-detected surface waters in Kasenyi town, Gethy Zone de Santé as observed from a Sentrinel-2 acquired on 04 October 2021. Within the analyzed area, the surface waters appears to have slightly progressed inland since 27 January 2021. This is a preliminary analysis and has not yet been validated in the field. Please send ground feedback to the United Nations Satellite Centre (UNOSAT).