Heavy down­pour fails to in­crease water stocks in dams

Hindustan Times ST (Mumbai) - Live - - THANE - Megha Pol

THANE: Though the mon­soon con­tin­ues to lash the city, the ab­sence of rain­fall in catch­ment ar­eas is a cause of worry for the ir­ri­ga­tion depart­ment which has de­cided to ef­fi­ciently use water from reser­voirs.

The depart­ment has com­pletely stopped us­ing water from the Barvi dam for the last two days and has in­stead asked the re­spec­tive agen­cies to pump out rain water from rivers be­fore it reaches the sea.

This year till Fri­day, the to­tal rain­fall in three city dams — Barvi, An­dra and Bhatsa dams — is al­most one-third than that of last year at this time.

The avail­able water re­source may last till July 15; how­ever, if the rain­fall con­tin­ues to elude catch­ment ar­eas, cit­i­zens may have to face more water cuts. The ir­ri­ga­tion depart­ment is likely to take de­ci­sion on this by next week.

“Rain water which does not seep into the ground flows into river through nul­lahs. This water ul­ti­mately meets the sea and is wasted. We de­cided to use this water be­fore it reaches the sea,” said Sub­hash Wagh­mare, su­per­in­tend­ing en­gi­neer, Thane Ir­ri­ga­tion depart­ment.

The depart­ment keeps a watch on rain­fall ev­ery two hours. “When a par­tic­u­lar city or vil­lage re­ceives good rain­fall, we know into which river this water will flow. We im­me­di­ately alert agen­cies con­cerned which pump water out. We have kept a watch on Jam­bul and Mo­hane ar­eas of the Ul­has river which is the prime source of water for Thane,” said Wagh­mare.

This water suf­fices at least for six to seven hours for the district. Apart from the rain water, the water from An­dra dam is also used.

Though rain­fall in the Thane city crossed 100 mm in few hours on Fri­day, it was 34 mm and 13 mm in the Barvi and Bhatsa dams. The to­tal rain­fall in Barvi and An­dra dams this year is 180 mm and 103 mm as op­posed to the to­tal rain­fall of last year which was 400 mm and 430 mm.

“For the dams to start re­ceiv­ing water, there should be at least 250 to 300 mm rain­fall in the up­stream ar­eas, or the catch­ment parts, of the­ses dams. More­over, this year rain­fall in the sea or creek area is more than those in the moun­tain­ous ar­eas of Kar­jat, Lon­avla or Khan­dala. Ev­ery year, the sit­u­a­tion is re­versed. Un­less it rains in the moun­tain ar­eas and the wa­ter­falls start gush­ing, the water won’t flow into the dams,” Wagh­mare said.

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