Five people have been killed by flooding in three provinces, with heavy storms expected to lash much of the country until Sunday, according to Department of Disaster Prevention and Mitigation (DDPM).
Floods were responsible for five deaths: one in Kamphaeng Phet, three in Sukhothai and one in Surat Thani, according to the DDPM.
The DDPM did not identify the five dead people or how they died.
The flood situation has returned to normal in 11 of 14 provinces severely hit since May 16.
The 11 provinces, mostly in the upper North and upper Northeast, are Chiang Mai, Phayao, Lamphun, Tak, Uttaradit, Kamphaeng Phet, Phitsanulok, Phetchabun, Ubon Ratchathani, Udon Thani and Surat Thani.
The three provinces still recovering from floods are Sukhothai, Loei and Phichit.
Authorities in the northern province of Sukhothai have been battling rising water in eight districts, including the downtown areas of Muang and Khiri Mat districts.
Of the three deaths in Sukhothai one occurred in Sri Samrong and the other two died in Khiri Mat. The floods damaged 20 homes, affected more than 17,000 households, 13 roads, and 17,655 rai of farmland.
In Loei in the Northeast, which bore the brunt of heavy rainfall starting on May 17, flooding inundated areas in 11 districts, including Muang district.
Almost 2,300 residents were affected and four government offices and two hotels were under water.
In the lower northern province of Phichit, the homes of 20 families were being repaired in tambon Rang Nok of Sam Ngam district. Waterways bursting their banks damaged more than 3,000 rai of farmland.
The DDPM has opened temporary disaster mitigation centres in Sukhothai and Loei where a mass relief distribution effort that included providing food and drinking water were underway. Boats were being used to move the residents' belongings from flooded homes.
Phichit disaster mitigation officials have asked the irrigation office in upstream Phitsanulok to open sluice gates to divert excess water from the Yom River to the Nan River to help ease flooding.
The DDPM chief, Chatchai Promlert, said anti-flood efforts in Sukhothai, Loei and Phichit were now in the recovery phase, although local disaster prevention and mitigation officials were bracing for more wet weather in the days ahead.
Diverting water is one of the primary tasks being implemented with water weeds and floating debris which could hinder this process and drainage being removed from waterways.
Prime Minister Prayut Chan-o-cha has instructed state agencies to retain some of the flood water in dams and reservoirs for future farm use.
The DDPM has worked with police, the army and vocational schools to send people to help fix flood-damaged homes. Sections of roads swept away were also being repaired.
Meanwhile, the Meteorological Department has warned of more heavy rainfall affecting areas in many provinces in the North, the Northeast, the East as well as the lower southern provinces of Ranong, Phangnga, Phuket, Krabi, Trang and Satun from now until Sunday.
Heavy rain will also affect the Central Plains provinces and Bangkok starting from tomorrow until Sunday.
The department said rain could trigger flash floods and runoff from mountains. Small boats were advised to stay in port during this period.
On Wednesday, large amounts of excess water from floods in the North forced officials at the Chao Phraya dam in Chai Nat to continue discharging water to stabilise water levels in the Chao Phraya River.
However, the amounts of water being discharged have not increased as some of the excess water had been diverted to catchment areas in upstream provinces, according to the Chai Nat irrigation office.