Effective storage, % of active storage (Irrigation Department)
Uyanwewa reservoir. Per cent, daily.
100.0% · 16 Oct 2026 (−0.6 pts on 30 Sep 2026)
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Values
Latest · 16 Oct 2026100.0%−0.6 pts on 30 Sep 2026
| Period | Per cent | Change, pts |
|---|---|---|
| 16 Oct 2026 | 100.0% | −0.6 |
| 30 Sep 2026 | 100.6% | 0.0 |
| 29 Sep 2026 | 100.6% | 0.0 |
| 28 Sep 2026 | 100.6% | 0.0 |
| 27 Sep 2026 | 100.6% | 0.0 |
| 26 Sep 2026 | 100.6% | 0.0 |
| 25 Sep 2026 | 100.6% | 0.0 |
| 24 Sep 2026 | 100.6% | +4.0 |
| 23 Sep 2026 | 96.6% | +4.0 |
| 22 Sep 2026 | 92.6% | +4.0 |
| 21 Sep 2026 | 88.6% | +7.4 |
| 20 Sep 2026 | 81.2% | 0.0 |
1096 rows
Data source: Irrigation Department, medium_maha_155979206.csv (16 Oct 2026)
Macro Lab · LK.WEATHER.RESERVOIR.UYANWEWA.PCT_FULL.D · Data: Irrigation Department. Chart and text: CC BY 4.0
Cite as: Irrigation Department, via Macro Lab, macrolab.lk/data/series/LK.WEATHER.RESERVOIR.UYANWEWA.PCT_FULL.D/. Spotted an error? Tell us.
About this series
- Source Irrigation Department, compiled by Macro Lab
- Unit Per cent
- Date range 1 Apr 2023 – 16 Oct 2026
- Last checked 16 Oct 2026
Checks: no discrepancies recorded.
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Details
- Name in the source
- Uyanwewa reservoir: effective storage, % of active storage (Irrigation Department)
- Read from
- Irrigation Department: daily water level and storage of major and medium reservoirs (Irrigation Department)
- Source page
- https://irrigation.gov.lk/web/index.php?option=com_content&view=article&id=84&Itemid=201&lang=en
- Licence
- Source: Irrigation Department, Water Management Branch.
- Notes
- Uyanwewa (Galle range), one of the Irrigation Department's medium reservoirs. Effective storage is gross storage less dead storage. % of active storage (gross capacity less dead storage): the Department's own figure from the daily sheet; before it, computed the same way from the season tables' effective storage. Daily from the 2020/21 Maha season (major) or 2023 Yala (medium), from the Department's season tables; a reservoir not read on a day repeats its last reading there. Source: Irrigation Department, Water Management Branch, daily water level and storage of major and medium reservoirs, https://irrigation.gov.lk/web/index.php?option=com_content&view=article&id=84&Itemid=201&lang=en.
Source documents
medium_maha_155979206.csvIRRIG · 16 Oct 2026 · 364 valuesmedium_yala_1831537855.csvIRRIG · 16 Oct 2026 · 731 values
Releases and revisions
One release so far, published 16 Oct 2026. Revisions show here once a later release changes a value.