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Neriamangalam

Idukki district · KSEB · Periyar basin

No warning — below every published alert level

Storage

Water level

Spillway release

Latest report

Rain forecast

15 mm

Next 72h 47 mm

Storage & water level — last 30 days

Risk breakdown

Flood risk6
Landslide risk17
Reservoir stress0
Watershed saturation16
River overflow3
  • 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 Neriamangalam 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 Neriamangalam 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
25.0°C
Humidity
95%
Rain 24h
25.7 mm
Wind
1 km/h
Gusts
9 km/h
Pressure
1007 hPa

AI analysis

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

  • Watch alert — Neriamangalam · 03 Aug 2026, 10:14 IST

Reservoir information bulletin

Commissioned
Dam type
Height
Length
Gross capacity
Live capacity
Catchment area
Full reservoir level
Power station
Installed capacity
Purpose
Operator
KSEB
River
Periyar
Basin
Periyar
Nearby towns
Neriamangalam
Emergency contact
1077

Periyar 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
Bhoothathankettu (Barrage)Ernakulam31.00 / 34.95101.7 ft / 114.7 ft800 m³/sControlled release — water is being released in regulated quantities, not a danger warning
MullaperiyarIdukki / 46.33 / 152.0 ftNo warning — below every published alert level
Lower Periyar (Pambla)Idukki249.90 / 253.00819.9 ft / 830.1 ft71.5%No warning — below every published alert level
NeriamangalamIdukki / / No warning — below every published alert level
IdukkiIdukki721.42 / 732.432366.9 ft / 2403.0 ft61.0%No warning — below every published alert level