SnapFlood

SnapFlood is a citizen science app that enables people to quickly capture and upload photos and videos of urban floods. The app helps document when and where floods occur, along with their severity, by building a real-time archive of flood-related images and videos. This growing database can support scientific research, engineering solutions, and policy decisions, while also helping municipalities respond more effectively during extreme weather events.

The app has been developed by the RAFT (Rainfall-runoff Analysis and Forecasting Tools) group at IIT Hyderabad. The idea originated in 2019 during a project funded by the Government of India's Department of Science and Technology (DST-SPLICE, Climate Change Programme), National Network Programme on Urban Climate (NUC), under the National Mission on Strategic Knowledge for Climate Change (NMSKCC). Earlier efforts were also supported by the Government of India's AI CoE for Sustainable Cities project.

With SnapFlood, anyone can "Snap the Flood" safely and contribute to building a valuable flood archive for science, engineering, and policy.

Recent changes:
- Live community flood map — see recent reports near you from the past week
- New Satellite and Navigation basemaps
- Redesigned navigation bar for easier getting around
- Report flood depth visually — watch the water rise as you set the level
- Off-app flood alert notifications
- Faster app startup