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Ponmudi

Idukki district · KSEB · Panniyar basin · report 18 Sep 2026, 11:00 IST

No warning — below every published alert level

Storage

37.6%

Previous 39.1%

Water level

692.45 m (2271.8 ft)

FRL 707.75 m (2322.0 ft)

Spillway release

Latest report

Rain forecast

12 mm

Next 72h 39 mm

Storage & water level — last 30 days

Risk breakdown

Flood risk17
Landslide risk13
Reservoir stress32
Watershed saturation9
River overflow8
  • Level 692.45 m is below the blue alert level of 704.50 m

Rate of rise(derived)

-0.45 m / 24 h

Downstream exposure

The downstream reach and local body list for Ponmudi have not been transcribed from a District Disaster Management Plan yet, so none are shown.

District control room: 1077 / 04862-233111

Rule curve — seasonal operating target

No rule curve (seasonal guide curve) is published for Ponmudi 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.

Rainfall forecast — next 48 hours

Spillway releases

Current weather at the dam

Temperature
21.7°C
Humidity
95%
Rain 24h
9.8 mm
Wind
7 km/h
Gusts
19 km/h
Pressure
932 hPa

AI analysis

Ponmudi is at yellow alert, with storage rising from 59.64% to 59.98% and the water level at 698.95 m, just 1.05 m below the 700 m FRL; all gates remain closed with no spill. The rise is being driven by 28.6 mm of recent rain, with another 29.7 mm forecast in 24 hours and 46.5 mm over 72 hours; the next alert level would be triggered if the reservoir’s specified orange-level threshold is reached, but that threshold was not provided.

  • Watch alert — Ponmudi · 06 Aug 2026, 20:00 IST
  • Watch alert — Ponmudi · 06 Aug 2026, 18:37 IST
  • Watch alert — Ponmudi · 06 Aug 2026, 13:37 IST
  • Warning alert — Ponmudi · 03 Aug 2026, 22:15 IST
  • Warning alert — Ponmudi · 03 Aug 2026, 21:37 IST

Reservoir information bulletin

Commissioned
Dam type
Height
Length
Gross capacity
42.0 MCM
Live capacity
42.0 MCM
Catchment area
Full reservoir level
707.75 m (2322.0 ft)
Power station
Installed capacity
Purpose
Operator
KSEB
River
Panniyar
Basin
Periyar
Nearby towns
Nedumkandam
Emergency contact
1077

Panniyar river system — levels & flow

Every monitored structure on this river, ordered by how much water it is passing downstream right now.

StructureLevel / FRL (m)StorageInflowOutflowStatus
AnayirankalIdukki1198.37 / 1207.023931.7 ft / 3960.0 ft35.6%No warning — below every published alert level
PonmudiIdukki692.45 / 707.752271.8 ft / 2322.0 ft37.6%No warning — below every published alert level