Saturday, July 10, 2010

Mumbai Water and Rain Facts:
This Monsoon Mumbaikars are rejoicing and happily welcoming the heavy rains,hoping against hope for a better year ahead as far as the water needs are concerned.

But mind,i am not pessimistic, but feel one should see the reality and analyse the fact. And then make a judgement.

Total Rainfall so far, as on Saturday,10th. July Morning:
Colaba: 1379 mms
Santa Cruz: 1143 mms
Lakes: Vihar, Tulsi, Tansa,Upper Vaitarna, Bhatsa between them have an average rainfall of about 900 mms.

Highest seasonal rainfall, till September end, ever recorded in Colaba 3482 mms (1954), and lowest ever 848 mms (1904).
For SantaCruz highest is 3785 mms(1958) and lowest 1482 mms(1968).
Highest ever day's rain in July/Aug/Sept at Colaba 576/287/548 mm and at SantaCruz 944/346/318 mms.

Lakes Water capacity as on Saturday : 2010: 1.74 lmlitres(Lakh million litres).
:2009: 1.46 lmlitres
:2008 2.77 lmlitres
:2005 8.69 lmlitres
Aversge capacity normally this date: 5.0 lmlitres
Full Lakes capacity, required at end of season:13.0 lmlitres.

Lakes short of overflowing level: Bhatsa 34 mtrs, Modak Sager 15 mts,Vaitarna 10 mtrs,Tansa 7 mtrs,Vihar 5 mtrs, Tulsi 3 mtrs,

Now, the situation is on your screen, good or bad, you decide !


  1. Dear Rajesh,
    The lake area rainfall is much more important than to Santa Cruz and Coloba. I do not know much about Mumbai topography. However it is the catchment area rainfall that accounts for the run off. Even otherwise, from the many fold excess rainfall from these two places, one can infer that water storage in lakes benefited from this rainfall will be in a very comfortable position. SWM is very very beneficial to Mumbai.
    Thank it

  2. Rainfall at Colaba is "down the drain". there is no scope for any seepage underground. and colaba is 40 kms from the nearest lake and 120 kms from the farthest. Santa Cruz..about 10 kms away from Tulsi, but dont know if rain there is of any use ?