Where does the reservoir information come from?

From the Irrigation Department's daily reservoir sheet and the Mahaweli Authority's daily report. Both update about once a day, so check the date shown. This site is independent: for spill-gate warnings follow the Disaster Management Centre and call 117.

Ulhitiya Reservoir

Mahaweli Authority reservoir

Ulhitiya reservoir: no recent release figure published.

No live data

As of 26 Oct · Checked 10 min ago

Steady. Storage: Mahaweli Authority, 26 Oct. Level +0.07 m since 23 Oct.

91%full

Level 106.06 m above sea level

Steady

Level +0.07 m since 23 Oct.

Mahaweli Authority · 26 Oct

Release now

No data

Mahaweli Authority · 26 Oct

Rain, day before: No data
Holds when full: No data
Source: Mahaweli Authority · 26 Oct

Recent days

History starts 23 Oct. The trend chart appears after 3 days, check back.

Fri 23
90%
No data
Mon 26
91%
No data

Storage, % full · Released downstream

Where the water goes

No river gauge of ours is directly below this reservoir.

Figures from the daily Irrigation Department and Mahaweli Authority reports. A blank there shows here as “no data”, never zero.

Common questions

Is Ulhitiya releasing water?: Ulhitiya reservoir: no recent release figure published.
Where does the reservoir information come from?: From the Irrigation Department's daily reservoir sheet and the Mahaweli Authority's daily report. Both update about once a day, so check the date shown. This site is independent: for spill-gate warnings follow the Disaster Management Centre and call 117.