Bengaluru - KA

Today's briefing

Post-monsoon plateau

Cauvery basin near full storage: 4 upstream dams at 52% of FRL combined.

-Hemavathi (Gorur Dam) is the most-drawn at 46% FRL; Harangi carries the most buffer at 62% FRL.
-BWSSB's Cauvery Stage V (commissioned 16 Oct 2024) is delivering only ~400 of 775 MLD design as of Feb 2026 (The Ken). Fully delivered, post-Stage-V supply covers the 2034 demand (~2,608 MLD) but still falls ~721 MLD short by 2049.
-~14M residents fall within BWSSB's piped jurisdiction, but actual coverage is only ~71% (ISEC, 2017-18); the rest depend on over-extracted borewells and the ~5,000-tanker informal market. IISc Groundwater Outlook (Apr 2025) flags 65 BBMP wards as critically over-extracted.
-Even at full upstream storage, BWSSB's ~{nrw}% non-revenue water (audited 2017-18, ISEC) means more than a third of what's pumped 95 km from T.K. Halli is lost between WTP and household meter. BWSSB reports a further reduction toward ~30%, not yet independently audited.

Groundwater (blocks + risk)Tanker market Lakes + cascade

Cauvery upstream storage: 26 Oct 2026 - refreshed daily via Karnataka WRIS

Reservoir Status

Krishnaraja Sagar (KRS)

52.7%

26,074mcft

of 48,400 mcft capacity

In: 11,864Out: 1,391

Hemavathi (Gorur Dam)

45.5%

16,901mcft

of 35,700 mcft capacity

In: 3,776Out: 300

Kabini (Beechanahalli)

No reading yet

of 19,520 mcft capacity

BWSSB does not publish daily levels for this source.

Harangi

61.8%

5,252mcft

of 8,500 mcft capacity

In: 1,679Out: 200

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Groundwater

CGWB block exploitation, ward risk composite, CGWB Year Book station overlay.

Water bodies

mapped water bodies.

Tanker market

What households actually pay - longitudinal OpenCity surveys (2015 / 2019 / 2024).

About this dashboard

Methodology, data sources, water sources tracked, and the data gaps we're honest about.

Methodology: Reservoir levels for Bengaluru from BWSSB. Daily consumption assumptions (~1450 MLD demand) are starting points; the sliders above let you substitute your own. See theAbout pagefor the full data-source index and methodology.