Chad

UNOSAT
UNOSAT maps over Chad for a period of 5 years
Updated: 6 hours 43 min ago

Inundated Area from 1999 to June 2013, Sila region, Fongoro District, Chad

Mon, 08/12/2013 - 20:21
This map illustrates satellite-detected small temporary water bodies, wetlands and other humid areas as measured every 10 days between 1999 and June 2013 by SPOT satellites. Each pixel therefore indicates how many decadal (ten day) periods within the 14 years sampling period experienced some from of inundation or wetland conditions. Darker pixels indicate areas with relatively higher frequencey of inundation, while lighter pixels indicates areas with less frequent inundations. Populated place names are currently being compiled by UNOSAT. This is a preliminary analysis & has not yet been validated in the field. Please send ground feedback to UNITAR / UNOSAT.

Zones inondees de 1999 jusqu a Juin 2013, Region de Sila, District de Fongoro, Chad

Mon, 08/12/2013 - 20:16
Cette carte illustre les petits point d eau temporaires et autre zones humides detectes tous les dix jours entre 1999 et Juin 2013 par le satellite SPOT. Chaque pixel indique le nombre de decades (periode de dix jours), sur une periode de 14 ans, ont connu des conditions d inondation. Les pixels les plus fonces indiquent les zones avec une plus haute frequence d inondation alors que les pixels les plus clairs indiquent une frequence d inondation plus faible. Les places peuplees sont actuellement compilees par UNOSAT. Il s agit d une etude preliminaire et n a pas encore ete validee sur le terrain. Merci d envoyer vos commentaires et vos questions a UNITAR / UNOSAT.

Drainage Network and Infrastructure, Fongoro District, Sila Region, Chad

Fri, 08/09/2013 - 14:27
This map illustrates the drainage network, populated places, and roads in and around Abgadam and Armawaha refugee camp sites in Fongoro District, Sila Region, Chad. The drainage lines identify areas of likely water flow based on certain thresholds of water accumulation and are most likely representative of seasonal streams. Populated placed are extracted from the ResEAU research project data library, with the latter also the source of the roads data. Populated place names are currently being compiled by UNOSAT. This is a preliminary analysis and has not yet been validated in the field. Please send ground feedback to UNITAR / UNOSAT.

Reseau de drainage et infrastructures, District de Fongoro, Region de Sila, Chad

Fri, 08/09/2013 - 14:23
Cette carte illustre le systeme de drainage, les places peuplees et les routes autour des regions d Abgadam et Armawaha, dans le district de Fongoro, region de Sila, Chad. Les lignes de drainage identifient les zones d ecoulement de l eau en fonction des seuils d accumulation d eau et sont representatifs des cours d eau saisonniers. Les donnees concernant les places peuplees ont ete extraites du projet de recherche "ResEAU", comprenant egalement les donnees des routes. Les places peuplees sont actuellement compilees par UNOSAT. Il s agit d une étude preliminaire et n a pas encore ete validee sur le terrain. Merci d envoyer vos commentaires et vos questions a UNITAR / UNOSAT.

Vegetation Cover in Fongoro District, Sila Region, Chad

Fri, 08/09/2013 - 14:18
This map illustrates land cover in Fongoro District, Sila Region, Chad and is based on satellite imagery acquired by the SPOT 5 satellite on multiple dates in 2012. Ten different land cover types are indicated on the map and the district is primarily composed of savanna and agricultural areas. Populated place names are currently being compiled by UNOSAT. This is a preliminary analysis and has not yet been validated in the field. Please send ground feedback to UNITAR / UNOSAT.

Couvert vegetal dans le district de Fongoro, Region de Sila, Chad

Fri, 08/09/2013 - 14:13
Cette carte illustre le couvert vegetal pour les regions d Abgadam et d Armawaha, base sur l analyse d images satellite acquises par SPOT 5 a differentes dates en 2012. Dix differents types de couverts sont indiques sur la carte. La region est principalement composee de savanes et zones d agriculture. Les places peuplees sont actuellement compilees par UNOSAT. Il s agit d'une etude preliminaire et n a pas encore ete validee sur le terrain. Merci d envoyer vos commentaires et vos questions a UNITAR / UNOSAT.

Inundated Areas from 1999 to June 2013, Sila Region, Fongoro District, Chad

Fri, 08/09/2013 - 13:40
This map illustrates satellite-detected small temporary water bodies, wetlands and other humid areas as measured every 10 days between 1999 and June 2013 by SPOT satellites. Each pixel therefore indicates how many decadal (ten day) periods within the 14 years sampling period experienced some from of inundation or wetland conditions. Darker pixels indicate areas with relatively higher frequencey of inundation, while lighter pixels indicates areas with less frequent inundations. Populated place names are currently being compiled by UNOSAT. This is a preliminary analysis and has not yet been validated in the field. Please send ground feedback to UNITAR / UNOSAT.

Zones inondees de 1999 jusqu a Juin 2013, zone d Abgadam et d Armawaha, District de Fongoro, Region de Sila, Chad

Fri, 08/09/2013 - 13:24
Cette carte illustre les petits points d eau temporaires et autres zones humides detectes tous les dix jours entre 1999 et Juin 2013 par le satellite SPOT. Chaque pixel indique combien de decades (periode de dix jours) sur la periode de 14 ans ont connu des conditions d inondation ou de zones humides. Les pixels les plus fonces indiquent les zones avec une plus haute frequence d inondation alors que les pixels les plus clairs indiquent une frequence d inondation plus faible. Les places peuplees sont actuellement compilees par UNOSAT. Il s agit d une etude preliminaire et n a pas encore ete validee sur le terrain. Merci d envoyer vos commentaires et vos questions a UNITAR / UNOSAT.

Vegetation Cover, Abgadam and Armawaha Area, Fongoro District, Sila Region, Chad

Fri, 08/09/2013 - 13:18
This map illustrates land cover in Fongoro District, Sila Region, Chad and is based on satellite imagery acquired by the SPOT 5 satellite on multiple dates in 2012. Ten different land cover types are indicated on the map and the district is primarily composed of savanna and agricultural areas. Populated place names are currently being compiled by UNOSAT. This is a preliminary analysis and has not yet been validated in the field. Please send ground feedback to UNITAR / UNOSAT.

Couvert Vegetal dans la zone d Abgadam et d Armawaha, District de Fongoro, Region de Sila, Chad

Fri, 08/09/2013 - 13:10
Cette carte illustre le couvert vegetal pour les regions d Abgadam et d Armawaha, base sur l analyse d images satellite acquises par SPOT 5 a differentes dates en 2012. Dix differents types de couverts sont indiques sur la carte. La region est principalement composee de savanes et zones d agriculture. Les places peuplees sont actuellement compilees par UNOSAT. Il s agit d une etude preliminaire et n a pas encore ete validee sur le terrain. Merci d envoyer vos commentaires et vos questions a UNITAR / UNOSAT.

Drainage Network and Infrastructure, Abgadam and Armawaha area, Fongoro District, Sila Region, Chad

Fri, 08/09/2013 - 13:06
This map illustrates the drainage network, populated places, and roads in and around Abgadam and Armawaha refugee camp sites in Fongoro District, Sila Region, Chad. The drainage lines identify areas of likely water flow based on certain thresholds of water accumulation and are most likely representative of seasonal streams. Populated placed are extracted from the ResEAU research project data library, with the latter also the source of the roads data. Populated place names are currently being compiled by UNOSAT. This is a preliminary analysis and has not yet been validated in the field. Please send ground feedback to UNITAR / UNOSAT.

Drainage Network and Infrastructure, Abgadam and Armawaha area, Fongoro District, Sila Region, Chad

Fri, 08/09/2013 - 12:56
This map illustrates the drainage network, populated places, and roads in and around Abgadam and Armawaha refugee camp sites in Fongoro District, Sila Region, Chad. The drainage lines identify areas of likely water flow based on certain thresholds of water accumulation and are most likely representative of seasonal streams. Populated placed are extracted from the ResEAU research project data library, with the latter also the source of the roads data. Populated place names are currently being compiled by UNOSAT. This is a preliminary analysis and has not yet been validated in the field. Please send ground feedback to UNITAR / UNOSAT.

Reseau de drainage et infrastructures, zone d Abgadam et Armawaha, District de Fongoro, Région de Sila, Chad

Thu, 08/08/2013 - 11:02
Cette carte illustre le systeme de drainage, les places peuplees et les routes autour des regions d Abgadam et Armawaha, dans le district de Fongoro, Region de Sila, Chad. Les lignes de drainage identifient les zones d ecoulement de l eau en fonction des seuils d accumulation d eau et sont representatifs des cours d eau saisonniers. Les donnees concernant les places peuplées ont ete extraites a partir du Common Operational Dataset (Chad) et les données du projet de recherche "ResEAU", comprenant egalement les donnees des routes. Les places peuplees sont actuellement compilees par UNOSAT. Il s agit d une etude preliminaire et n a pas encore ete validee sur le terrain. Merci d envoyer vos commentaires et vos questions a UNITAR / UNOSAT.

Flood Waters over Lake Chad and Chad/Cameroon border

Thu, 11/01/2012 - 19:02
This map illustrates satellite-detected standing flood waters over affected areas of the three border countries located around the Lake Chad: Nigeria, Cameroon and Chad. The situational map shows the flood extent as of 30 October 2012, detected with MODIS imagery, Eastern and southern parts of Chad, as well as the confluence area located close to Kousseri town have been hit by floods caused by heavy rains. Notes: 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

Update 1: Overview of flood waters, N'Djamena, Chad

Thu, 11/01/2012 - 19:02
This map illustrates satellite-detected standing flood waters over affected districts and the IDP camps in N'Djamena, Chad. The situational map shows the flood extent as of 26 October 2012, detected with DMC imagery, Eastern and southern parts of the country have been hit by floods caused by heavy rains. 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 analysis has not yet been validated in the field. Please send ground feedback to UNITAR /UNOSAT.

Situational Update 1: Satellite assessment of floods over the city of N'Djamena, Chad

Wed, 10/17/2012 - 11:29
This report provides an overview of current flooding of the city of N’Djamena, Chad. KOMPSAT satellite imagery acquired on the 14th October 2012 and SPOT-5 satellite imagery acquired on the 16th October was used for this report. This report is part of an on-going satellite monitoring program of UNITAR / UNOSAT of the International Charter on Space and Major Disasters activation over floods in Chad in support of international humanitarian assistance and created to respond to the needs of UN agencies and their partners. This situational analysis is based on a rapid visual assessment of current satellite data available over this area. This analysis has not yet been validated in the field. Please send ground feedback to UNITAR/UNOSAT at the contact information below.

Overview of flood waters, N'Djamena, Chad

Mon, 10/15/2012 - 18:02
This map illustrates satellite-detected standing flood waters over affected districts in N'Djamena, Chad. Eastern and southern parts of the country have been hit by floods caused by heavy rains. 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 analysis has not yet been validated in the field. Please send ground feedback to UNOSAT