
That there
is a culture of negligence is
evident from the fact that the flow of the water, when it breached the
embankment, was just 1.44 lakh cusecs compared to the 9.5 lakh cusecs
the embankment was designed to withstand. That it overflowed at just
about one-ninth its capacity was because the huge silt deposits on the
riverbed had raised the water to dangerous levels.
The Bihar government continued to issue daily flood
bulletins till Aug 17 stating that all was well....
"If it was
known that there was so much
silt deposit, there should have been public acceptance of that and a
declaration made by authorities that the embankment would be breached
at a much lower level than it was designed for. This was clearly not
done," says Himanshu Thakkar
of the
Delhi-based South Asia Network on
Dams, Rivers and People (SANDRP). "And why wasn't desilting carried out
at strategic points where the embankments had weakened?" he asks.
One
would have expected some sense of urgency when it became clear in the
first week of August that a flood was imminent. But the Bihar
government continued to issue daily flood bulletins till August 17
stating that all was well with the embankments even as engineers
struggled upstream to prevent an overflow. The alert was finally
revised on August 18, the date of the breach. Even the three early
warning faxes—the first on August 9—sent to the Bihar liaison office in
Kathmandu were in vain: the fax machine was not working because of
non-payment of bills! But it is not just these recent warnings that
were ignored. Signs of an impending deluge came as early as 2004 with
satellite images showing the Kosi's flow had begun moving to the left
bank, exerting more pressure on the embankment. But, as usual,
authorities at the Centre and state didn't react. When the government
machinery finally acted, it was too late. "We began damage control on
August 5. The flow was too strong...whatever we dumped in was swept
away," says Harikeshwar Ram, superintendent engineer, flood control,
Bihar water resources department. Labour problems in Nepal impeded work
further.
The 2008 floods also serve as an indictment of
embankments as a flood control measure. Dinesh Kumar Mishra, an expert
on Bihar's rivers, points out that this year's calamity is the eighth
instance where the Kosi has breached its embankments since the 1960s.
"Each time, it is the same story of neglect," he says. Even a dam
upstream would only be a temporary way out. When a dam—often cited as
the best solution to Kosi's floods by some—was first proposed in 1937,
engineers hastened to specify that it would silt up in just 37 years
given the large sediment deposit Kosi brings along with it as it flows
downhill. Moreover, the dam would have to be built in a zone prone to
earthquakes and would involve, like any other dam, immense
environmental and social costs.
Instead, the way out, suggests
SANDRP's Thakkar, would be to rely on a more diverse catchment-based
approach that depends on an extensive network of water-retaining
bodies. "That would mean wetlands, much of which is being presently
destroyed, lakes, ponds and groundwater recharge to help reduce the
water inflow into the Kosi," he says. "We would also have to give up
the idea that a flood necessarily implies a disaster. It's only human
mismanagement that makes it one," he adds. His message: Don't blame it
on the Kosi.
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