Bengaluru - KA
Today's briefing
Monsoon rechargeCauvery basin in monsoon recharge: 4 upstream dams at 45% of FRL combined.
- -Krishnaraja Sagar (KRS) is the most-drawn at 29% FRL; Hemavathi (Gorur Dam) carries the most buffer at 57% 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.
- -Recharge season also coincides with the BBMP foam-fire window - Bellandur's downstream weir typically produces surfactant foam events in the first heavy rains after a dry stretch (Feb 2017 fire was the canonical event).
Cauvery upstream storage: 10 Jul 2026 - refreshed daily via Karnataka WRIS
Reservoir Status
Krishnaraja Sagar (KRS)
29.3%14,502mcft
of 48,400 mcft capacity
In: 12,312Out: 712
Hemavathi (Gorur Dam)
56.8%21,062mcft
of 35,700 mcft capacity
In: 11,470Out: 300
Kabini (Beechanahalli)
53.4%10,426mcft
of 19,520 mcft capacity
In: 15,198Out: 500
Harangi
53.5%4,547mcft
of 8,500 mcft capacity
In: 2,751Out: 180
Groundwater
CGWB block exploitation, ward depth (interpolated), live WRIS station overlay.
Water bodies
OSM polygons, flagship tanks, restoration priority badges, lost-tank inventory.
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.