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Salinity seeps in largest freshwater reservoir in Vietnam’s Mekong Delta

Salinity seeps in largest freshwater reservoir in Vietnam’s Mekong Delta

Monday, March 18, 2024, 22:05 GMT+7
Salinity seeps in largest freshwater reservoir in Vietnam’s Mekong Delta
The salinity of water in the Kenh Lap Reservoir in Ben Tre Province, southern Vietnam is 0.7 parts per thousand but it is a good source of water for a local water treatment plant. Photo: Mau Truong / Tuoi Tre

Kenh Lap, the largest manmade freshwater reservoir in Vietnam’s Mekong Delta, has become saline with a salinity level of 0.7 parts per thousand.

The salinity may increase if it is still hot in the coming days.

Pham Quoc Phong, director of Ben Tre Irrigational Works Management and Exploitation Company, which manages Kenh Lap Reservoir in Ba Tri District, Ben Tre Province, southern Vietnam, explained that the salinity of the reservoir is low when water is pumped into it.

The salinity increases as water evaporates.

Water is pumped regularly into the reservoir from the Ba Lai River and nearby canals to prevent pollution, Phong noted.

The Kenh Lap Reservoir is the largest freshwater reservoir in the Mekong Delta. Photo: Mau Truong / Tuoi Tre

The Kenh Lap Reservoir is the largest freshwater reservoir in Vietnam's Mekong Delta. Photo: Mau Truong / Tuoi Tre

As Ba Tri District is close to the sea, the salinity of  0.7 parts per thousand is considered low.

Truong Van Ton, a resident living near the Kenh Lap Reservoir, said water in local canals has a salinity level of over a thousandth, so he cannot use the water to irrigate his vegetable garden.

But his house is near the reservoir, so his garden can overcome the drought and salinity season, Ton added.

A local water treatment plant also treats water from the reservoir and supply clean water to over 3,800 local houses with a capacity of some 5,000 cubic meters per day.

Work on the Kenh Lap Reservoir with a capacity of over 800,000 cubic meters started in 2017 to serve 200,000 residents in 24 communes and towns in Ba Tri District.

The reservoir carries a price tag of VND85 billion (US$3.4 million) and was put into use in August 2019.

The water from the Kenh Lap Reservoir is mixed with water from local canals to reduce the salinity. Photo: Mau Truong / Tuoi Tre

The water from the Kenh Lap Reservoir is mixed with water from local canals to reduce the salinity. Photo: Mau Truong / Tuoi Tre

The Kenh Lap Reservoir in Ba Tri District, Ben Tre Province has a salinity of 0.7 thousandth. Photo: Mau Truong / Tuoi Tre

The Kenh Lap Reservoir in Ba Tri District, Ben Tre Province has a salinity level of 0.7 parts per thousand. Photo: Mau Truong / Tuoi Tre

The salinity of water in the Kenh Lap Reservoir may rise if it is still hot in the coming days. Photo: Mau Truong / Tuoi Tre

The salinity of water in the Kenh Lap Reservoir may rise if it is still hot in the coming days. Photo: Mau Truong / Tuoi Tre

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Thanh Ha - Mau Truong / Tuoi Tre News

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