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Odisha: 12 dead in flash floods, Mahanadi in spate

Aug 29, 2020 09:05 IST

Bhubaneswar, PTI: Fear of flood looms large in the Mahanadi river system in Odisha following heavy rainfall in its upper catchment areas in Chhatisgarh and a rise in the water level of Hirakud Dam, a senior official said.

Five more people lost their lives in rain-related incidents in the state on Friday, raising the death toll to nine, while 4,15,817 people in 10 districts are affected, Special Relief Commissioner (SRC), P K Jena, said.

Forty of the 64 sluice gates of the Hirakud Dam, built across the Mahanadi near Sambalpur in Odisha, were opened by the authorities on Friday to discharge excess water.

The flood in the Mahanadi river system is likely to affect coastal districts such as Puri, Khurda, Cuttack, Jagatsinghpur and Nayagarh, another official said.

Many other rivers are in spate submerging low-lying areas and snapping road connectivity.

Jena said that 4,15,817 people in 1,276 villages under 54 blocks of Angul, Balangir, Balasore, Boudh, Cuttack, Jajpur, Dhenkanal, Nuapada, Deogarh and Sonepur were affected.

Over 3.83 lakh people in 552 villages are marooned, while 2,757 houses have been damaged, he said adding that over 18,534 people have been evacuated from affected areas and shifted to 106 shelter centres.

After heavy rainfall in the upper catchment areas of the Mahanadi in neighbouring Chhattisgarh, over 6.9 lakh cusec water is now entering the Hirakud reservoir while 4.11 lakh cusec is being discharged through 40 sluice gates of the dam, the SRC said.

The water level at Hirakud Dam stands at 625.58 feet as against the full reservoir level of 630 feet, he said.

Excess water is being discharged from the reservoir due to the huge inflow, Jena said.

As the inflow at Hirakud Dam is likely to increase up to 8 lakh cusec shortly, the authorities are expected to raise the volume of discharge to over 6 lakh cusec from the reservoir, Jena said.

As a result, 10 to 10.5 lakh cusec of water is likely to flow through Munduli near Cuttack on Saturday where 7.04 lakh cusec of water is now flowing and it may lead to a medium level flood in the Mahanadi delta region, he said.

When the water flow is above 10 lakh cusec, it is categorised as medium to major flood, Chief Engineer of water resources department, Jyotirmaya Rath said.

It will take more than 24 hours for the water from Hirakud Dam to reach Munduli to increase the flow from 10 to 10.5 lakh cusec there, he said.

The government is fully prepared to deal with the situation, the SRC said adding that the state has in the past faced huge flow of up to 16 lakh cusec in the Mahanadi, the largest river in the coastal state.

Collectors of all the districts in the Mahanadi delta region have been alerted to deal with the situation, he said.