2017 South Asian Floods

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General Information
Hot logo with text.svg

The Forecast-based Financing (FbF) project in Bangladesh intends to support the vulnerable people of Bangladesh districts exposed to cyclones.

Recently due to cyclone induced inundation and strong winds, two communities, Hatiya and Companiganj have been supported with a cash transfer programme. This early action was activated based on forecast information, in order to support families in a timely manner to conduct mitigation and preparedness actions to minimize risks due to their vulnerability and exposure to cyclones.

Exposure data is still a challenge, as existing maps do not show clearly show where the households are located, therefore having a OSM map of the existing communities, will help us to analyze the extend of the affectation for evaluation purposes, but will also help us to upgrade the FbF mechanism for future potential activations, this will allow us to prioritize in a more effective way the most exposed and vulnerable households.

This is an ongoing disaster.

Monsoon season in South Asia has brought above average rainfall, resulting in devastating flooding across the region in Bangladesh, Nepal, and India. Over 1,200 people have died as a result, and over 30 million people have been impacted. Rise of water levels in the various rivers in the northern part of the country due to heavy rainfalls as well as water flow from the upstream hills in India have led to the inundation of the river basin areas in the northern parts of Bangladesh. After the devastating flood of July, second time monsoon flood started on 12 August affecting 31 districts named Dinajpur, Nilphamari, Lalmonirhat, Kurigram, Thakurgaon, Panchagarh, Gaibandha, Bogra, Sirajganj, Jamalpur, Sunamganj, Netrokona, Rangamati, Brahmanbaria, Faridpur, Rajbari, Jessore, Mymensingh, Tangail, Sylhet, Sherpur, Dhaka, Moulvibazar, Naogaon, Comilla, Rangpur, Manikganj, Madaripur, Joypurhat, Shariatpur and Natore. It disrupted people’s normal life. 1200 union of 183 upazilas under 31 districts are affected and 8746 villages affected. Total 238843 people fully and 6536509 people partially affected, 50042 households fully and 1305257 households partially affected, 71628 houses fully and 548175 houses partially damaged. Total 121 people died. 15529 hectare fully and 562594 hectare partially agricultural land inundated, 34 fully and 3134 partially educational institution damaged, 403km of road fully and 4432.38 km of road partially damaged, 268 bridge and 96 km of embankment damaged.

Bangladesh Red Crescent Society (BDRCS) opened an emergency control room to monitor and collect the information on the ongoing floods and has already alerted its national disaster response team (NDRT) members and national disaster WATSAN response team (NDWRT) members and more NDRT and NDWRTs are on stand-by. BDRCS has deployed them in the flood affected area. Red Crescent Youth (RCY) with the support of their unit (branch) offices, executive committees and local administration, started distributing cooked and dry foods. To provide safe drinking water in Sirajganj, Tangail, Jamalpur, Bogra, Kurigram, Gainbanda districts water purification plants deployed by BDCS. RCY volunteers are assisting Government medical team in Dinajpur district. The BDRCS has requested International Federation of Red Cross and Red Crescent Societies to launch disaster relief emergency fund (DREF) to help the affected people in flood affected districts.

This Mapping projects in the most affected districts of Bangladesh will provide an updated road map and dataset for the the Bangladesh Red Crescent Society and the IFRC.

Read more about this activation on the HOTOSM blog (2017-09-09).


  • You can contribute to the response via the internet by tracing buildings, roads, waterways, etc. To react rapidly to support humanitarians deploying, we need a lot of contributors for remote editing. Visit the Missing Maps beginners section to get started.
  • Please choose from highest priority first. Pre-disaster situations should be simple to complete fast, just validating the essential missing infrastructures. Post-disaster mapping could require much more work and more complex planning of emergencies, but will require newer specific imagery source.
  • Generic instructions on how to use the Task Manager and map roads, buildings and waterways can be found here.
  • For experienced mappers, information on validating the tasks can be found here.


Job No. Priority Location What to map Imagery source Mapping status Validation status Exported datasets
Current tasks
Job ### ### ### (###) Buildings and Roads Bing/Mapbox/DigitalGlobe In progress (0%) In progress (0%)
Job 3583 Urgent Chirirbandar, Dinajpur (Bangladesh) Roads and residential areas Bing In progress (0%) In progress (0%)
Job 3582 Urgent Dinajpur, Dinajpur (Bangladesh) Roads and residential areas Bing In progress (92%) In progress (2%)
Job 3581 Urgent Fulbaria, Dinajpur (Bangladesh) Roads and residential areas Bing Complete (100%) In progress (63%)
Job 3495 Urgent Jamalpur Sadar, Jamalpur (Bangladesh) Roads and residential areas Bing In progress (2%) In progress (0%)
Job 3494 Urgent Melandaha, Jamalpur (Bangladesh) Roads and residential areas Bing Complete (100%) In progress (3%)
Job 3493 Urgent Madarganj, Jamalpur (Bangladesh) Roads and residential areas Bing Complete (100%) In progress (24%)
Job 3440 Middle Hatiya and Companigan (Bangladesh) Buildings, roads and waterways DigitalGlobe In progress (93%) In progress (39%)
Job 3439 Middle Kajla and Kamalpur district (Bangladesh) Buildings, roads and waterways DigitalGlobe Complete (100%) In progress (9%)
Archived tasks
Job 3580 Urgent Ghoraghat, Dinajpur (Bangladesh) Roads and residential areas Bing Complete (100%) Complete (100%)
Job 3554 Urgent Hakimpur, Dinajpur (Bangladesh) Roads and residential areas Bing Complete (100%) Complete (100%) Download OSM Data (2017-09-19)
Job 3553 Urgent Kaharole, Dinajpur (Bangladesh) Roads and residential areas Bing Complete (100%) Complete (100%)
Job 3545 Urgent Khansama, Dinajpur (Bangladesh) Roads and residential areas Bing Complete (100%) Complete (100%) Download OSM Data (2017-09-19)
Job 3544 Urgent Nawabgonj, Dinajpur (Bangladesh) Roads and residential areas Bing Complete (100%) Complete (100%) Download OSM Data (2017-09-19)
Job 3543 Urgent Parbatipur, Dinajpur (Bangladesh) Roads and residential areas Bing Complete (100%) Complete (100%) Download OSM Data (2017-09-19)
Job 3492 Urgent Islampur, Jamalpur (Bangladesh) Roads and residential areas Bing Complete (100%) Complete (100%) Download OSM Data (2017-09-11)

Data access

Anyone can use OSM data for free under the Open Database Licence (ODbL) as long as OSM contributors are credited. Exports of the OSM data for Bangladesh can be downloaded from the Export Tool. There are some select file formats available on the Humanitarian Data Exchange platform. Datasets will be published through the Export Tool as mapping projects are being completed on the Tasking Manager. Please check back frequently for new datasets listed in the table above.


This activation in response to 2017 South Asian Floods is being lead by the following individuals:

You may also chat with HOTOSM on Slack: discussions are archived and don't require a permanent connection.


When there is a humanitarian crisis, OSM volunteers from around the world rapidly digitise satellite imagery to provide maps and data to support humanitarian organisations deployed to the affected countries. HOT coordinates that effort, partnering with relief organisations to focus map editing on the places most in need, providing maps with the footprints of buildings and roads quickly, so humanitarians can locate people at risk and deliver goods and services to the areas that need them most. HOT helps to bridge the OSM community and the humanitarians.

Emergencies such as this put a tremendous strain on OSM resources, particularly our servers and software. Your donations help keep OSM's systems operating in top form.

Donate to the OpenStreetMap Foundation

HOT also need your donations, to help funding humanitarian mapping projects and development/maintenance of systems such as the Tasking Manager and Export Tool.

Donate to the Humanitarian OpenStreetMap Team