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.

Mahadivul Wewa

Trincomalee

Mahadivul Wewa reservoir is not releasing water and is 64% full. Irrigation Department, 26 Oct.

Holding

As of 26 Oct · Checked 2 min ago

64%full

16.8 of 21.0 ft

4.2 ft below full

Irrigation Department · 26 Oct

Release now

Not releasing water

Outlet gates 0 cusecs

Irrigation Department · 26 Oct

Rain, day before: 63 mm; Irrigation Department · 26 Oct
Holds when full: ~25 million m³; Irrigation Department · 26 Oct
Source: Irrigation Department · 26 Oct

Recent days

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 Mahadivul Wewa releasing water?: Mahadivul Wewa reservoir is not releasing water and is 64% full. Irrigation Department, 26 Oct.
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.