Damage assessment around the Nova Kakhova Dam, Ukraine as of 06 June 2023; 08:07 UTC

✦ DISCOVERED BY ORIONAIUnited Nations Satellite Centre (UNOSAT)WaterUkraine
Ukraine

About this dataset

**UNOSAT code FL20230606UKR** This map illustrates satellite-detected flood waters and affected structures next to Nova Kakhova Dam in Khersonska Oblast (Ukraine) as observed from Skysat image acquired on 6 June 2023 at 08:07 UTC; and a pre-event Worldview-2 image acquired on 5 June 2023. Within the analysed area of 80 km², about 5 km² of land appear to be flooded. 346 structures and 07 harbours are damaged. This is a preliminary analysis and has not yet been validated in the field. Please send ground feedback to 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.

Related datasets

✦ Suggested by OrionAI
Satellite Flood water Extent between the Nova Kakhovka Dam Wall and the Dnipro River mouth, Khersonska Oblast, Ukraine as of 21 June 2023

**UNOSAT code FL20230606UKR** This map illustrates satellite-detected flood waters along the 90km downstream of Dnipro River between the damaged Nova Kakhovka Dam wall and the Dnipro River mouth in Ukraine as observed from a Sentinel-1 images acquired on 21 June 2023 at 15:36 UTC. Within the analysed area of about 10,800 km², about 20 km² of land appear to remain flooded. This is a preliminary analysis and has not yet been validated in the field. Please send ground feedback to United Nations Satellite Centre (UNOSAT).

Water · United Nations Satellite Centre (UNOSAT)
ViewSave
Damage assessment over Kardashynka Village, Kokhany Village and surroundings, Khersonskyi Region, Khersonska Oblast, Ukraine as of 07 June 2023

**UNOSAT code FL20230606UKR** This map illustrates satellite-detected flood waters and affected structures over Kardashynka and Kokhany Villages and surroundings in Khersonska Oblast (Ukraine) as detected from a WorldView-3 image acquired on 7 June 2023 at 08:19 UTC; and ICEYE image acquired on 7 June 2023. Within the analysed area of 27 km², about 81% (22 km²) of Kardashynka Village, and Kokhany Village and surrounding area appears to be flooded. 8,728 structures and 38 harbours are affected. This is a preliminary analysis and has not yet been validated in the field. Please send ground feedback to United Nations Satellite Centre (UNOSAT).

Water · United Nations Satellite Centre (UNOSAT)
ViewSave
Satellite detected water extent over Khersonska Oblast, Ukraine as of 07 June 2023

**UNOSAT code FL20230606UKR** This map illustrates satellite-detected surface waters over Khersonska Oblast, Ukraine derived from the MODIS Near Real-Time Global Flood Product using data acquired on 7 June 2023 12:43 UTC; and a Sentinel-2 image acquired on 3 & 5 June 2023 to assess pre-flood conditions. Within the area downstream of the damaged dam about 288 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 United Nations Satellite Centre (UNOSAT).

Imagery and land cover · United Nations Satellite Centre (UNOSAT)
ViewSave
Damage assessment over Kherson City, Khersonskyi Region, Kehersonska Oblast, Ukraine as of 07 June 2023; 08:19 UTC

**UNOSAT code FL20230606UKR** This map illustrates satellite-detected flood waters and affected structures over Kherson City, Khersonskyi Region, Kehersonska Oblast (Ukraine) as observed from WorldView-3 image acquired on 7 June 2023 at 08:19 UTC; and ICEYE image acquired on 7 June 2023. Within the analysed area of 64 km², about 19% (12 km²) of Kherson City area appear to be flooded. 4,302 structures and 76 harbours are affected. This is a preliminary analysis and has not yet been validated in the field. Please send ground feedback to United Nations Satellite Centre (UNOSAT).

Water · United Nations Satellite Centre (UNOSAT)
ViewSave
Satellite Detected Waters Evolution over Khersonska, Dnipropetrovska, Mykolaivska,Odeska and Zaporizka Oblasts in Ukraine as of 15 July 2023

**UNOSAT code FL20230606UKR** This map illustrates satellite-detected water using Sentinel-2 image acquired on the 15th of July 2023 and compared with the water extent between the 03rd and the 05th of July 2023 after the Nova Kakhovka dam wall break of the 06th of June 2023. Within the analysed area of 25,000 km², surface waters appear to have receded by about 100 km² in cloud free zone since the 5th of July 2023. No major changes observed in water level of the cooling pond of the Zaporizhia nuclear power plant as of 15 July 2023 compared to 5 July 2023. 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).

Imagery and land cover · United Nations Satellite Centre (UNOSAT)
ViewSave
Damage assessment over Kherson City, Khersonskyi Region, Khersonska Oblast, Ukraine as of 17 June 2023.

**UNOSAT code FL20230606UKR** This map illustrates satellite-detected flood waters and affected structures over Kherson City, Khersonskyi Region, Khersonska Oblast (Ukraine) as observed from WorldView-3 image acquired on 17 June 2023 at 09:13 UTC; and ICEYE image acquired on 7 June 2023. Within the analysed area of 64 km², about 2% (1.5 km²) of Kherson City area appear to be flooded. Water extent appears to have decreased by about 17 km² since 7 June 2023. About 861 structures were still affected by floods on 17 June 2023. This is a preliminary analysis and has not yet been validated in the field. Please send ground feedback to United Nations Satellite Centre (UNOSAT).

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