Erattayar

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

Storage

14.2%

Previous 14.2%

Water level

747.10 m (2451.1 ft)

FRL 754.38 m (2475.0 ft)

Spillway release

—

Latest report

Rain forecast

5 mm

Next 72h 17 mm

Storage & water level — last 30 days

Risk breakdown

Flood risk7

Landslide risk10

Reservoir stress12

Watershed saturation6

River overflow3

• No official alert levels defined
• No official alert levels are defined for this structure

Rate of rise(derived)

0.00 m / 24 h

Downstream exposure

The downstream reach and local body list for Erattayar 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 Erattayar 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: 20.3°C
Humidity: 96%
Rain 24h: 8.5 mm
Wind: 12 km/h
Gusts: 26 km/h
Pressure: 916 hPa

AI analysis

An AI analysis for this reservoir will appear after the next scheduled briefing.

Danger alert — Erattayar · 04 Aug 2026, 02:00 IST
Danger alert — Erattayar · 04 Aug 2026, 01:44 IST
Danger alert — Erattayar · 03 Aug 2026, 10:14 IST

Reservoir information bulletin

Commissioned: —
Dam type: —
Height: —
Length: —
Gross capacity: —
Live capacity: —
Catchment area: —
Full reservoir level: 754.38 m (2475.0 ft)
Power station: —
Installed capacity: —
Purpose: —
Operator: KSEB
River: Erattayar
Basin: Periyar
Nearby towns: Kattappana
Emergency contact: 1077