Storage
—
Water level
—
FRL 732.43 m (2403.0 ft)
Spillway release
—
Latest report
Rain forecast
14 mm
Next 72h 35 mm
Storage & water level — last 30 days
Risk breakdown
- • No official alert levels defined
- • No official alert levels are defined for this structure
Rate of rise(derived)
Trend needs two bulletins
Projection needs 3 days of bulletins (0 held).
Downstream exposure
The downstream reach and local body list for Cheruthoni 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 Cheruthoni 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
- 21.6°C
- Humidity
- 100%
- Rain 24h
- 16.3 mm
- Wind
- 5 km/h
- Gusts
- 12 km/h
- Pressure
- 932 hPa
AI analysis
An AI analysis for this reservoir will appear after the next scheduled briefing.
Environmental & carbon accounting
Insufficient data- Reservoir methane (gross)
- Not enough data /yr
- Green carbon — catchment forest
- Not enough data /yr
- Blue carbon — sediment burial
- Not enough data /yr
- Hydropower grid offset
- Not enough data /yr
CH₄ from flooded land × GWP-100 (27), age-adjusted
Western Ghats forest sink, 60% forest cover assumed
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vs CEA grid 0.716 kg CO₂/kWh, 35% capacity factor
Net catchment balance: Not enough data/yr (forest + sediment sinks minus reservoir methane)
Estimate, not a measurement — built from IPCC 2019 Flooded Lands factors and public dam data. Kerala does not publish measured reservoir emissions. Credits shown are indicative, not registered. How this is calculated
Reservoir information bulletin
- Commissioned
- 1976
- Dam type
- Concrete gravity
- Height
- 138.4 m (454.0 ft)
- Length
- —
- Gross capacity
- —
- Live capacity
- —
- Catchment area
- —
- Full reservoir level
- 732.43 m (2403.0 ft)
- Power station
- —
- Installed capacity
- —
- Purpose
- Hydroelectric, spillway for Idukki
- Operator
- KSEB
- River
- Cheruthoni
- Basin
- Periyar
- Nearby towns
- Cheruthoni, Idukki
- Emergency contact
- 1077
Cheruthoni is the concrete gravity dam of the Idukki reservoir complex and carries the scheme's only spillway. Its five shutters were opened in August 2018 for the first time in 26 years during the Kerala floods.