Which region is having the worst season
All five regions on one chart, current season only, each
measured against its own prior four-year mean. Levels alone
would conflate a structurally dry region with one having a bad
year.
All 206 schemes — one point each
Sized by design capacity, coloured by deviation from the
same-date mean of prior years. Points only; no filled areas.
Gujarat — all 206 schemes
Largest negative deviations — percentage points
Today's % filling against the mean % filling on the same calendar
date in prior years, for the years whose published capacity matches today's.
Answers: where is the drop deepest relative to this reservoir's own record?
The same comparison weighted by volume
Implied shortfall in MCM against the prior same-date mean.
Answers: where is the largest quantity of water missing? A different
question, and a different list.
How these figures are built — parameters, exclusions and limits