Khawaja Zaheer Ahmed - PDMA

n) Substantial retention of extra intake at Tarbela was made possible
as 603,000 cusecs were released, to attenuate minimum additions
at Khairabad and downstream that day.
o) On arrival in downstream Khairabad, as these releases from
Tarbela joined the super-flood flows from Kabul River, it had
averted another big back-wash towards Nowshehra.
p) Timely steps at Tarbela, minimized threat to the aging Jinnah
Barrage, commissioned in 1947, which is awaiting rehabilitation.
q) As the first wave of season’s highest flows reached Jinnah Barrage
six hours earlier than expected on 30 th July evening, the LMB and
LGB had already breached on 29 th July to inundate vast tracts of
lands and settlements in Mianwali and Bhakkar; the 3,500 feet long
breach in LMB was later plugged by 2 nd August 2010 before arrival
of 2 nd peak after 9 th August 2010 that did not affect any additional
areas.
r) On the following day of 30 th July, highest flows of 936,000 cusecs
arrived but before these approached the red-line for Jinnah
Barrage, three pre-determined breaching sections in Right Guide
Bund (RGB) were got activated with the help of the Army Engineers
to release about 100,000 cusecs; no risk could be taken at that
stage.
s) The measure saved the vulnerable barrage though damages were
inflicted to a few of its installations including under-repair apron,
Power-House, 11 KV Transmission line and some peripheral
structures.
t) As water advanced towards Chashma Barrage in Mianwali, on 1 st
August, it attained a peak of 1,038,876 cusecs, with addition from
Kurram River. Here, extensive consultations ensued since receipt
of 30 th July warnings and breaches at Jinnah Barrage, and an
orderly routing of 957, 310 cusecs was affected by adjusting the
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