Tri An Hydroelectric Power Station sets up the water moderating plan

In a forecast from meteorological and hydrographic forecast station for South Vietnam, the year 2011’s rainy season is coming sooner than in many previous years. In the first half of the season, the rainfall will be higher than in previous years, particularly in August which is defined as the peak of rainfall. Realizing such weather conditions and in order to flood fighting and prevention and water moderation, in these dry months, Tri An Hydroelectric Power Station has completed the maintenance and repair of key machines and devices to ensure the normal operation during rains and floods. Also, electricity supply for water overflow dykes will be maintained to fully supply the main electricity source and implement the standby safety for dyke foundation and kill termites for dykes at Tri An; prepare an adequate amount of spare materials for flood and storm control; combine with the meteorological and hydrographic forecast station for South Vietnam to provide timely information about flood, storm, water flowing into lake and rains at riverhead stations, etc.

In addition to the daily updating of meteorological and hydrographic conditions, when flood and storm are forecast, the station will moderate reservoir and regulate water overflow properly. Before the initial overflow during season of rains and floods, the company will send the prior written notice to Steering Board of Flood Control before 2 days so that residential areas at lowlands keep informed to reduce any possible loss. Particularly, the company in combination with affected areas will restrict the water moderation to facilitate the flood control at Dong Nai, Binh Duong and Ho Chi Minh city, etc.

Not only has Tri An set up the plan for flood control, but they continue to do research and build up the plan for drought control and saltwater prevention during dry season of 2011 – 2012. In dry season, Tri An’s water moderation will be regulated to push back saltwater with an average volume of 60m³/s per day at least. In fact, during its 20-year operation, the water volume flowing into the lake is ranging from 80-120m³/s. However, in order to prevent saltwater invasion during dry season, the operational capacity still remains above 200m³/s. As forecast, the drought in 2011 – 2012 dry season is likely to happen, which can affect electricity generation and water supply for saltwater invading protection in lowland areas. Concerning these facts and following the direction from Vietnam Electricity Corporation, Tri An Hydroelectric Station will liaise with local authorities and lowland clean water supply units to agree on the cooperation of the optimal operation between electricity and water supply for lowland area’s demands.

Reported by Ba Thong, Translated by Minh Minh