Dams are spilling as nor­mal

Western Leader - - YOUR LOCAL NEWS - PJ TAY­LOR

The Auck­land re­gion’s pub­lic water pro­ces­sor and sup­plier is ad­vis­ing that its dams and plant are cop­ing with the huge del­uge of rain­fall over the past week.

Water­care said on Fe­bru­ary 13 that heavy rain had been fall­ing reg­u­larly in the Hunua Ranges over re­cent days and it was ‘‘re­as­sur­ing res­i­dents that the dams are op­er­at­ing nor­mally’’.

To­tal dam stor­age lev­els were at 95.7 per cent, ‘‘and the dams are spilling in the nor­mal fash­ion’’, it said.

How­ever, Water­care water op­er­a­tions man­ager Priyan Per­era said lo­cal Hunua res­i­dents liv­ing down­stream from the dams ‘‘should still keep an eye on the weather’’.

‘‘We’re ex­pe­ri­enc­ing very heavy rain at the mo­ment, so if you live near a wa­ter­way such as the Wairoa River [in south-east Auck­land], it’s al­ways a good idea to mon­i­tor water lev­els and take ap­pro­pri­ate safety mea­sures.

‘‘But I want to em­pha­sise that the Hunua dams are not used for the gen­er­a­tion of hy­dro-elec­tric dams and op­er­ate in quite a dif­fer­ent way,’’ Per­era said.

‘‘Rain fall­ing in the catch­ment is stored in the reser­voir cre­ated by the dam struc­ture, rather than dis­charged di­rectly to a stream or river.

‘‘There are no ‘re­lease gates’ in­stalled in Auck­land’s water sup­ply dams.’’

Tues­day’s ad­vi­sory came af­ter the Tas­man Tem­pest slowed the Ard­more Water Treat­ment Plant’s abil­ity to process clean water in March last year.

The plant’s water has been sourced from four stor­age dams in the Hunua Ranges.

It was treat­ing 50 per cent less water than usual in the wake of those storms that bat­tered the re­gion.

Dam water flow­ing into the plant post-storms in March 2017 con­tained a lot of silt due to slips and ero­sion, mak­ing it more dif­fi­cult to treat.

Water­care mon­i­tored dams 24 hours a day and up­dates are posted daily on its web­site, www.water­care.co.nz.

Newspapers in English

Newspapers from New Zealand

© PressReader. All rights reserved.