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.

Detagamuwa Reservoir

Moneragala

Detagamuwa reservoir: no recent release figure published.

No live data

As of 23 Oct · Checked 4 min ago

6%full

Not updated since 23 Oct

Irrigation Department · 23 Oct

Release now

No data

Not updated since 23 Oct

Rain, day before: No data
Holds when full: ~1.3 million m³; Irrigation Department · 23 Oct
Source: Irrigation Department · 23 Oct

Recent days

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

Fri 23
32%
No data

Water depth, % of full supply · 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 Detagamuwa releasing water?: Detagamuwa 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.