Basin

Mahaweli Ganga

6 river gauges on the Mahaweli Ganga basin, ordered upstream → downstream. Tap a station for live readings, thresholds, and a next-hour forecast.

Stations on this basin

Mahaweli Ganga — upstream to downstream

24h trend

Stations ordered by river flow. Trend = change over last ~3 hours; arrow direction reflects rate. Ordering for this basin is by longitude — may not perfectly match river hydrology.

Mahaweli Ganga— connected dams & power stations

9 known

KotmaleHydropower reservoir
170 MCMlive MW: n/a
Top of Mahaweli cascade
Upper KotmaleHydropower reservoir
live MW: n/a
PolgollaDiversion
4 MCM
Diverts Mahaweli flow north via tunnel to Bowatenna
BowatennaHydropower reservoir
51 MCMlive MW: n/a
Receives Polgolla diversion → Amban Ganga
UkuwelaHydropower station
live MW: n/a
VictoriaHydropower reservoir
722 MCMlive MW: n/a
Largest reservoir in the cascade
RandenigalaHydropower reservoir
875 MCMlive MW: n/a
Largest by capacity
RantembeHydropower reservoir
22 MCMlive MW: n/a
Final dam in the upper cascade
MoragahakandaHydropower reservoir
Newer, on Amban Ganga branch

Static catalogue hand-curated from Mahaweli Authority and CEB sources. Live MW values are sourced from the PUCSL GenData API but the endpoint currently returns empty values across all plants — the table is a published stub. Real release data should appear here automatically when CEB starts populating it.