First flood-warning system comes online in central region
  • | VNS | May 18, 2011 10:05 PM

Vietnam\'s first regional flood warning system is now operating in the five most flood-prone provinces of the central region.

More than 70 automatic gauges and weather stations had been installed, Hydro Meteorological and Environment centre director Nguyen Dinh Luong said on May 17.

They were measuring rainfall, river water and sea levels, wind, humidity and barometric pressure, he said.

The data was being transmitted in real time to provincial centres, collated in Danang centre and sent on to the national centre in Hanoi, he said.

The system in the provinces of Quang Binh, Quang Tri, Thua Thien-Hue, Quang Nam and Quang Ngai had taken three years to develop.

It was funded with USD3.67 billion in official development assistance from the Italian Government and VND15 billion (USD715,000) from the Vietnamese Government. Italian company CAE was the project contractor.

National Hydro Meteorological Service director Bui Van Duc said that the new system was fast and accurate.

It takes only 3-6 hours for floods to hit downstream in the central part of Vietnam due to its narrow shape.

Now it would take 30 minutes to get a flood warning from the time rain started to fall upstream, compared to two hours previously, Duc said.

"Measurements used to be taken manually and put into reports to be sent out via telephone or radio links, which made the whole process time-consuming."

It was especially difficult during extreme events like typhoons.

Automatic measuring also meant better accuracy. Manual measuring of water level might have an error of 1cm whereas the automatic system was precise to a millimetre, he said.

However, Deputy Minister of Natural Resources and Environment Nguyen Van Duc said the density of gauging stations in the new system still remained low compared to other advanced countries.

The warning process would be expanded to the rest of central Vietnam early next year.

"Investment in flood forecasting and warning means investment in sustainable development and poverty reduction here," the deputy minister said.

Floods in the central region last October alone killed almost 200 people, left 35 missing with another 200 injured. They caused property losses estimated at VND13.5 trillion (USD642 million) to the already poorest areas of the country.

Vietnam aimed to have a developed agriculture sector, which depended much on disaster and flood warnings, the deputy minister said.

Meanwhile, a strategy has been approved to develop a nationwide modern hydro meteorological network by 2020 to make the whole country prepared for floods and disasters.

However, meteorological director Duc said progress was slow due to the credit crunch.

Landslide, flash floods threaten Lao Cai

Nine houses were destroyed and one resident badly injured in a landslide following heavy rains and flash floods in the northern mountainous province of Lao Cai on May 16.

The losses were reported from Bao Yen and Bac Ha districts, the provincial Flood and Storm Control Steering Committee said on May 17.

More than 400 hectares of rice and subsidiary crops in the northern province of Phu Tho remained inundated on May 17 after heavy rains on May 15.

Meanwhile, meteorologists have warned of more rains and possible whirlwinds for the north and northern centre on May 18 as part of a weakening cold spell that hit Vietnam last weekend.

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