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.

Sri Lanka Water LevelsLive river-gauge readings

Basins

Reservoirs

Kala Wewa

කලා වැවKala Oya

Kala Wewa reservoir is releasing about 508 cusecs and is 99% full. Mahaweli Authority, 26 Oct.

ReleasingSmall release

As of 26 Oct · Checked 10 min ago

99%full

Level 129.19 m above sea level

Steady

Level +0.23 m since 23 Oct.

Mahaweli Authority · 26 Oct

Release now

508 cusecs

Released downstream

≈ 14,000 L/s · An Olympic pool every ~3 min

1 cusec ≈ 28 L/s

Mahaweli Authority · 26 Oct

Rain, day before: 64 mm; Mahaweli Authority · 26 Oct
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
94%
No data
Mon 26
99%
508 cusecs

Storage, % full · Released downstream

Where the water goes

Kala Wewa
Releasing508 cusecs
Travel time not measured yet
ThambuththegamaNot reporting

Map of this river

On the same river

Gauges

Thambuththegama

Other reservoirs

Photos

Kala Wewa
Photo: Nuwaiza Naseem, CC BY-SA 4.0 via Wikimedia Commons
Kala Wewa, view 2
Photo: Pjohoofanasterix, CC BY-SA 4.0 via Wikimedia Commons
Kala Wewa, view 3
Photo: HutchND, CC BY-SA 4.0 via Wikimedia Commons
Kala Wewa, view 4
Photo: HutchND, CC BY-SA 4.0 via Wikimedia Commons

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

Common questions

Is Kala Wewa releasing water?: Kala Wewa reservoir is releasing about 508 cusecs and is 99% full. Mahaweli Authority, 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.