Be prepared for potential flood situations in geographical locations situated below large reservoirs within the North, Northeast, and Central Plains, warns the Office of National Water Resources. The imminent danger spans from Thursday to Wednesday next week, primarily resulting from the reservoirs already surpassing their maximum storage limits, leading to enhanced discharge rates. The current situation as of Tuesday reveals a perilous scenario where nine major reservoirs have breached their upper rule curves, i.e., specific storage or void space to be preserved in a reservoir throughout different seasons.
The areas prone to being affected by extreme discharge encompass:
- In the North:
- Mae Ngat Somboon Chon reservoir, nestled in the Chiang Mai province.
- Kiew Lom and Mae Mok reservoir situated in Lampang.
- In the Northeast:
- Huai Luang reservoir located in Udon Thani.
- Nam Pung and Nong Han reservoirs in Sakon Nakhon.
- Ubol Ratana reservoir in Khon Kaen.
- Lampao reservoir in Kalasin.
- In the Central Plain:
- Khun Dan Prakan Chon reservoir located in Nakhon Nayok.
The Office of National Water Resources predicts persistent rainfall up to Thursday, leading to potential flooding in regions positioned lower than the reservoirs from Thursday to the ensuing Wednesday. More so, they have raised an alarm about a high risk of flooding in Phichit, Phitsanulok, Roi Et, Sukhothai, and Ubon Ratchathani provinces.
The Deputy Prime Minister, Somsak Thepsutin, on Tuesday voiced his concern for areas situated below the Chao Phraya barrage dam in the Chai Nat province. The dam is set to discharge water exceeding 1,500 cubic metres per second, a rate substantially higher than its typical rate of 1,400 cu/m per second.
In the Petchabun province, residing in the north, the Pa Sak River has unfortunately overflown into most parts of the Lom Sak district. Deputy provincial governor Chatchawal Benchasiriwong attributed the widespread flooding in Lom Sak to runoff from the Lom Kao district combined with an overflow from the Huai Khon Kaen reservoir situated in Lom Sak itself. On a slightly positive note, the governor affirmed the floodwater is estimated to drain off within a period of two to four days, provided there is no more rainfall.