Banasura Sagar

Wayanad district · KSEB · Karamanathodu basin · report 04 Aug 2026, 14:00 IST

Normal

Storage

58.1%

Previous 58.1%

Water level

768.30 m (2520.7 ft)

FRL 775.60 m (2544.6 ft)

Spillway release

—

Latest report

Rain forecast

18 mm

Next 72h 51 mm

Storage & water level — last 30 days

Risk breakdown

Flood risk27

Landslide risk20

Reservoir stress49

Watershed saturation15

River overflow12

• All monitored indicators within normal operating range

Rule curve — seasonal operating target

No rule curve (seasonal guide curve) is published for Banasura Sagar 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: 18.6°C
Humidity: 100%
Rain 24h: 20.5 mm
Wind: 7 km/h
Gusts: 43 km/h
Pressure: 902 hPa

AI analysis

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

Danger alert — Banasura Sagar · 03 Aug 2026, 10:14 IST

Reservoir information bulletin

Commissioned: 2005
Dam type: Earth fill
Height: 38.5 m (126.3 ft)
Length: 685 m (2247.4 ft)
Gross capacity: 209.0 MCM
Live capacity: 209.0 MCM
Catchment area: 61 km²
Full reservoir level: 775.60 m (2544.6 ft)
Power station: —
Installed capacity: —
Purpose: Irrigation and hydro augmentation
Operator: KSEB
River: Karamanathodu
Basin: Kabini
Nearby towns: Padinjarathara, Kalpetta
Emergency contact: 1077 / 04936-202249

Banasura Sagar in Wayanad is the largest earth dam in India and the second largest in Asia. It was built across the Karamanathodu, a tributary of the Kabini, to augment the Kuttiady hydroelectric scheme and support irrigation.