Idukki district · KSEB · Muthirapuzha basin · report 18 Sep 2026, 11:00 IST
Storage
73.0%
Previous 68.1%
Water level
453.80 m (1488.8 ft)
FRL 456.25 m (1496.9 ft)
Spillway release
—
Latest report
Rain forecast
12 mm
Next 72h 39 mm
Rate of rise(derived)
+0.50 m / 24 h
At the current rate, Red alert band in ~2.4 days (1.20 m to go)
Downstream exposure
The downstream reach and local body list for Kallarkutty have not been transcribed from a District Disaster Management Plan yet, so none are shown.
District control room: 1077 / 04862-233111
No rule curve (seasonal guide curve) is published for Kallarkutty in a form this platform can verify, so none is shown. Where an operating curve is published — as for Idukki after the 2018 floods — it is plotted against actual storage instead of being estimated.
Kallarkutty has no alert: storage is 70.09%, down from 74.53%, with the water level at 453.5 m versus the 456.25 m FRL; all five gates are closed and spill is 0 cumecs. Despite 26.6 mm of rain in the past 24 hours, only 3.5 mm is forecast in the next 24 hours and 15.5 mm over 72 hours, with flood risk 31 and landslide risk 16; the next alert would be triggered when the reservoir reaches its designated alert threshold, which is not provided.
Every monitored structure on this river, ordered by how much water it is passing downstream right now.
| Structure | Level / FRL (m) | Storage | Inflow | Outflow | Status |
|---|---|---|---|---|---|
| KundalaIdukki | 1752.95 / 1758.695751.1 ft / 5770.0 ft | 52.0% | — | — | No warning — below every published alert level |
| KallarIdukki | 819.80 / 824.482689.6 ft / 2705.0 ft | 22.8% | — | — | No warning — below every published alert level |
| KallarkuttyIdukki | 453.80 / 456.251488.8 ft / 1496.9 ft | 73.0% | — | — | No warning — below every published alert level |
| Madupetty (Mattupetty)Idukki | 1577.95 / 1599.595177.0 ft / 5248.0 ft | 22.4% | — | — | No warning — below every published alert level |