Palakkad district · Irrigation · Cherukunnapuzha basin · report 01 Nov 2026, 11:00 IST

Storage
89.0%
Previous 88.0%
Water level
77.27 m (253.5 ft)
FRL 77.88 m (255.5 ft)
Spillway release
0.3 cumecs
Latest report
Rain forecast
16 mm
Next 72h 33 mm
Rate of rise(derived)
+0.02 m / 24 h
At the current rate, Red alert band in ~1.5 days (0.03 m to go)
Downstream exposure
The downstream reach and local body list for Mangalam have not been transcribed from a District Disaster Management Plan yet, so none are shown.
District control room: 1077 / 0491-2505309
No rule curve (seasonal guide curve) is published for Mangalam 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.
Mangalam is at orange alert with storage steady at 82%; the water level is 76.8 m, 1.08 m below the 77.88 m FRL, with no spill. Recent rainfall of 24.9 mm and forecasts of 15.8 mm in 24 hours and 32.9 mm in 72 hours are driving concern, while flood and landslide risk scores are 37 and 16; the next alert level would be triggered if further inflows push the reservoir to its specified red-alert threshold, which is not provided.
CH₄ from flooded land × GWP-100 (27), age-adjusted
Western Ghats forest sink, 60% forest cover assumed
≈ 50 indicative credits/yr
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