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Mullaperiyar
Dam-Break Flood Risk Map

Not to scare anyone — just to be prepared.

Also includes the Maniyar Dam analysis (Pathanamthitta)
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mullaperiyar.online
Mullaperiyar dam-break — 60330 flooded 250 m squares, coloured by water depth (inundation). Zoom out = groups (tap to zoom); zoom in = squares (tap = depth, reach time, force & safe zones).
Area report: switch ON, then tap your home, school or ward — one report for the whole circle: first arrival, deepest water, fastest flow and the nearest safe high ground.
Water depth (inundation)
≥20 m
10-20 m
5-10 m
2-5 m
1-2 m
0.5-1 m
🌊 = tsunami double-impact
⛰ landslide-prone slope
🏞 Maniyar dam-break square (purple edge)
🏞 Maniyar adds <2 ft (force + debris)
⚠ delta (DEM-unreliable, high risk)
⚠ Indicative model — estimated ~70% accuracy. HAND inundation + Manning velocity + momentum force on SRTM terrain. Reach times are EARLIEST (conservative). Safe = nearest ground with water <0.2 m. NOT official mapping; verify with KSDMA / CWC / NDMA.