River map
Guide
What the colours mean
These are the four colours of the India Meteorological Department (IMD). Kerala's official alerts use the same colours.
Green · No warningNo action needed.
Yellow · Be updatedKeep following the news and official updates.
Orange · Be preparedKeep your emergency bag ready and know where you would go.
Red · Take actionFollow official instructions and move to safety when told.
A place's colour on this site is our estimate from river and rain data, unless an official alert is in force there. Official alerts always come first.
Dam alerts (KSEB and Irrigation Department)
Blue alertThe dam is filling up. No need to worry yet.
Orange alertThe dam is nearly full. Water may be let out soon. People by the river should be prepared.
Red alertWater will be let out. Follow instructions to move away from the river.
Where official warnings are published
- SACHET (NDMA) Every official alert for Kerala from IMD and KSDMA, in English and Malayalam.
- KSDMA Kerala State Disaster Management Authority: warnings, dam levels and advice.
- IMD Thiruvananthapuram District-wise rain warnings for the next five days.
District Collectors announce holidays, evacuations and dam releases on their district websites:
Keep these in one bag
If you live near a river, keep a bag packed during the monsoon so you can leave quickly.
💧Drinking water
🍞Dry food
💊Medicines
📄ID & papers in a plastic cover
🔦Torch
🔋Charged phone & power bank
👕Spare clothes
🧴Soap & sanitiser
✅ Do
- Move old people, children and animals early
- Switch off electricity before leaving
- Listen to official announcements
- Go to the nearest relief camp if asked
❌ Don't
- Walk or drive through flowing water
- Go to the river to watch or take photos
- Believe or forward unverified messages
- Wait until water enters your house