Who it's for
District- and ward-level flood extent for state disaster authorities, urban local bodies and planning departments — free for the 1% event, across all 36 states and union territories.
Free, with no login: browse the 100-year (1% annual chance) map for all 36 states and union territories, see whether a location falls inside that floodplain, read the 743-district ranking and the per-state analysis, and cite any of it in your own documents. What the free layer does not include is other return periods, future-climate scenarios, or bulk and programmatic access — those are the paid tiers below.
The problem
Most flood decisions in India are made after the water arrives. The maps that would inform zoning, shelter siting and budget allocation are often unavailable, out of date, or held at a scale too coarse to act on.
Where hazard mapping does exist, it is frequently locked inside one department, in a format that will not open in the tools a planning office actually uses.
The result is that the same wards flood every monsoon, the same relief is spent every year, and there is no map to argue for doing it differently.
In practice
Each one is a real workflow — who does it, the situation, the steps, and what comes back.
You have a fixed preparedness budget and 30-odd districts. You need a defensible basis for which ones get resources first, before the season starts.
What you get: A ranked district table with exposed building counts, percentage share and depth distribution — the evidence base for an allocation note.
GET /v1/exposure/admin/state/{code} A layout, TP scheme or land-use change is up for approval, and nobody can say what share of it is in the floodplain.
What you get: Exposure statistics for your own boundary, not a district average — enough to condition or refuse an approval.
POST /v1/exposure A shelter is only useful if people can reach it during the event. Routes are rarely checked against the same flood that triggers the evacuation.
What you get: A shortlist of shelter sites that are both above the modeled water and reachable during it.
GET /v1/point · road exposure layer A proposal for drainage, embankment maintenance or relocation needs an independent number that survives scrutiny.
What you get: A citable, reproducible exposure figure from an independent source, with its limitations stated — which is harder to dismiss than an internal estimate.
Your team runs a public dashboard or an internal viewer and wants the hazard layer beside cadastral, ward and infrastructure layers.
What you get: The hazard layer visible inside your own portal, with exposure numbers for your own boundaries.
GET /v1/tiles · POST /v1/exposure How you get it
GET /v1/exposure/admin/{level}/{code} POST /v1/exposure GET /v1/point GET /v1/tiles Organization and Enterprise are commercial plans — see the API page or talk to us. Return periods other than the 100-year event, and climate scenarios, are not part of the free layer.
Related reading
The most exposed state in the atlas, and what 43.7% looks like district by district
Read the analysis →The Kosi belt — where planning and flooding have argued longest
Read the analysis →Dimapur’s flooding is described locally as largely man-made — a planning problem, not a hydrological one
Read the analysis →This is a modeled 1% annual-chance riverine and pluvial flood at roughly 30 m. It is built for prioritisation and screening — deciding which wards to survey, not replacing a ward-level survey. It does not model cyclone storm surge, dam operations, or landslides, and in steep terrain the depth figures are least reliable.
We publish the limits next to the numbers. A risk map that hides its own weaknesses isn’t a public good.
We work with state and city teams on bulk extracts, other return periods and future-climate scenarios.
Also for
Where to work, before the water tells you
Read more →Find out before you sign
Read more →Price and accumulate Indian flood risk on Indian terrain
Read more →See the flood exposure sitting inside your loan book
Read more →Know what flood risk is doing to portfolio value
Read more →Keep the plant running — and know what to disclose
Read more →Check the site before the design is fixed
Read more →