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.

Wemedilla Reservoir

Kala OyaMatale

Wemedilla reservoir is spilling about 130 cusecs and is 100% full. Irrigation Department, 26 Oct.

SpillingSmall release

As of 26 Oct · Checked 8 min ago

100%full

36.4 of 36.0 ft

0.4 ft above full

Irrigation Department · 26 Oct

Release now

130 cusecs

Spill

≈ 3,700 L/s · An Olympic pool every ~11 min

Spill 130Outlet gates 30

1 cusec ≈ 28 L/s

Irrigation Department · 26 Oct

Rain, day before: 30 mm; Irrigation Department · 26 Oct
Holds when full: ~5.7 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.

Map of this river

On the same river

Gauges

Thambuththegama

Other reservoirs

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

Common questions

Is Wemedilla releasing water?: Wemedilla reservoir is spilling about 130 cusecs and is 100% 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.