Satellite detected water extent over Belet Weyne and Bulo Burto Zones, Hiraan Region, Somalia as of 29 April 2023

✦ DISCOVERED BY ORIONAIUnited Nations Satellite Centre (UNOSAT)Imagery and land coverSomalia
Somalia

About this dataset

**UNOSAT code FL20230327SOM, GDACS Id: 1101908** This map illustrates satellite-detected surface waters in Belet Weyne and Bulo Burto zones, Hiraan Region, Somalia as observed from a Sentinel-2 image acquired on 29 April 2023 at 07:06 UTC. Within the analyzed area of about 3,900 km², about 12 km² of land appear to be flooded. Water extent appears to have increased by about 1 km² since 19 April 2023. Based on Worldpop population data and the detected surface waters in the analyzed area, 700 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).

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 detected water extent over Hiraan, Lower Shabelle, and Middle Shabelle Regions, Somalia as of 29 April 2023

**UNOSAT code FL20230327SOM, GDACS Id: 1101908** This map illustrates satellite detected surface waters Hiraan, Lower Shabelle, and Middle Shabelle Regions Somalia as observed from Sentinel-2 image acquired on 29 April 2023 at 07:06 UTC. Within the analyzed area about 12,000 km², about 600 km² of land appear to be flooded. Water extent appears to have increased by about 480km² since 19 April 2023. Based on Worldpop population data and the detected surface waters in the analyzed area 59,000 people are potentially exposed or living close 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).

Imagery and land cover · United Nations Satellite Centre (UNOSAT)
ViewSave
Satellite detected water extent over Shabelle Zone, Somali Region, Ethiopia and Beledweyne District, Hiraan Region of Somalia as of 29 April 2023

**UNOSAT code FL20230327SOM** This map illustrates satellite-detected surface waters in Shabelle Zone, Somali Region of Ethiopia and Beledweyne District, Hiraan Region of Somalia as observed from a Sentinel-2 image acquired on 29 April 2023 at 07:06 UTC. Within the analyzed area of about 5,300 km², about 180 km² of land appear to be flooded. Water extent appears to have increased by about 60 km² since 19 April 2023. Based on Worldpop population data and the detected surface waters in the analyzed area, 7,500 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).

Imagery and land cover · United Nations Satellite Centre (UNOSAT)
ViewSave
Satellite detected water extent over Shabelle Zone, Somali Region, Ethiopia and Beledweyne and Northern Bulo Burto District, Hiraan Region of Somalia as of 14 May 2023

**UNOSAT code FL20230327SOM, GDACS Id: 1101908** This map illustrates satellite-detected surface waters in Shabelle Zone, Somali Region of Ethiopia and Beledweyne and Northern Bulo Burto District, Hiraan Region of Somalia as observed from a Sentinel-2 image acquired on 14 May 2023 at 07:28 UTC. Within the analyzed area of about 8,000 km², about 500 km² of land appear to be flooded. Water extent appears to have increased by about 300 km² since 29 April 2023. Based on Worldpop population data and the detected surface waters in the analyzed area, about 29,700 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).

Imagery and land cover · United Nations Satellite Centre (UNOSAT)
ViewSave
Satellite Detected Water over Belet Weyne & Bulo Burto Districts, Hiraan Region, Somalia

This map illustrates satellite-detected flood water extent over Booco and Hagan areas, Hiraan region, Somalia using a Radarsat-2 image acquired on 09 May 2018. Within the extent of the map about 4,000 ha of land appear to be inundated and according to WorldPop data, ~22,000 people, live within the extent of this map about 6,500 within 100 meters distance from the flooded areas which corresponds to about 30% of population in this zone. It is likely that flood waters have been systematically underestimated along highly vegetated areas along main river banks and within built-up urban areas because of the special characteristics of the satellite data used. This is a preliminary analysis and has not yet been validated in the field. Please send ground feedback to UNITAR UNOSAT.

Water · United Nations Satellite Centre (UNOSAT)
ViewSave
Satellite detected water extent - Beledweyne City, Beledweyne District, Hiraan Region of Somalia as of 19 May 2023

**UNOSAT code FL20230327SOM, GDACS Id: 1101908** This map illustrates satellite-detected surface waters over Beledweyne City, Beledweyne District, Hiraan Region of Somalia as observed from a Sentinel-2 image acquired on 19 May 2023 at 07:28 UTC. Within the analysed area of 166 km², about 63 km² of land appear to be flooded. Water extent appears to have increased by about 9 km² since 14 May 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).

Imagery and land cover · United Nations Satellite Centre (UNOSAT)
ViewSave
Satellite detected water over Belet Weyne District,Hiraan Region, Somalia

This map illustrates satellite-detected flood water extent over the district of Belet Weyne, Hiraan region, Somalia using a SAR image from 06 May 2018 and an optical VHR image over Beledweyne town. More than 2800 km2 of lands were assessed and about 19,000 ha (190km2) appear to be inundated which corresponds to about to about 7% of the total analysed zone. In this analysed area and according to WorldPop data the population is estimated to ~126,000 people, ~ 32,000 live in the flooded zone and about 70,000 within 100 meters distance from the flooded areas. It is likely that flood waters have been systematically underestimated along highly vegetated areas along main river banks and within built-up urban areas because of the special characteristics of the satellite data used. This is a preliminary analysis and has not yet been validated in the field. Please send ground feedback to UNITAR UNOSAT.

Water · 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