See
Radar sees through cloud, day and night, so the river is watched even in the worst weather.
NASA Space Apps 2026 · Dancing with the SARs
Rivers move. See where.
Riverbanks erode quietly, then all at once. RiverGuard turns satellite radar into a clear map of where land is being lost, and who lives in its path.
Now covering 56 km of the Jamuna River, Bangladesh · Sirajganj to Chauhali, both banks
Erosion is mapped after the land is gone. Planners need to know where to look before the next flood.
Clouds hide the river.
Storm and monsoon cloud blocks ordinary satellites at the very moment banks give way.
Slow, then sudden.
A bank can hold for years and disappear in a single season, taking homes and fields with it.
Budgets are limited.
Only a fraction of the banks at risk can ever be protected. Choosing where matters.
How it works
Three steps from orbit to action.
Measure
Every stretch of bank is tracked over time, with the confidence of each measurement shown.
Prioritise
Risk, people, land cover and soil in one click, so teams know where to check first.
See the river for yourself.
The map currently covers one 56 km stretch of the Jamuna River, from Sirajganj to Chauhali in Bangladesh. Other rivers are not covered yet.
Open the map