Citizens build map data flooded Chennai using open source maps. The South Indian city of Chennai is facing one of the wettest monsoons of the century. It has recorded close to 120cm of rainfall this month, which has led to death of over 260 people and disrupting the daily life for over 6.7 million people.
Unsurprisingly, there is virtually no data available to identify which parts of the city were most affected, and vulnerable to such climate phenomena. To get a clearer picture of how the city has been affected, mapping enthusiasts and regular Mapbox contributor Arun Ganesh, Sanjay , Aruna map-based tool to report flooded streets using OpenStreetMap data.
One can zoom into a locality, visualize which streets are reported as flooded (pink), and click on a street if it is flooded. Citizens are reporting flooded streets using OSM with flood-map. Lots of streets and waterways are still missing around Chennai and needs to be traced.
