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📊 Peak Kelani River Flood Levels (Past 40 Years)

(How the Hanwella peak resulted in the Nagalagam Street peak)

Hanwella (m) → Nagalagam Street, Colombo (ft)

◽️ 1989: 11.56 m → 9.2 ft
◽️ 1992: 8.27 m → 5.1 ft
◽️ 1999: 9.39 m → 6.6 ft
◽️ 2005: 9.07 m → 5.6 ft
◽️ 2008 (Apr): 9.91 m → 5.7 ft
◽️ 2008 (Jun): 9.51 m → 5.9 ft
◽️ 2016: ~10.5m → 7.6 ft

⭕ 2025: 10.95 m → 7.65 ft 🔺 (current peak)

⭕ According to the Director General of Irrigation, the maximum rise expected is 1 foot from the current level, (8.6ft)

#SriLanka🇱🇰 #StaySafe 🙏

30 Nov 2025, 19:31

Sources

  1. Original post on X — Numbers.lk (@numberslka)

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