BANGKOK - Flooding in Thailand's northern provinces continues due to heavy rain and the overflowing from river, Thai News Agency reported on Wednesday.

The Yom River, runs through the northern region of Thailand, has overflowed into a number of villages and damaged about 4,000 acres of farmland in northern province of Sukhothai.

Overnight heavy rain forced local residents in the Sukhothai provincial seat to evacuate to temporary shelter in tents on higher ground beside a roadway on Tuesday night.

However, the water level in the Yom River dropped slowly on Wednesday morning, resulting in eased flooding in some areas.

Sukhothai meteorological station director Praphruet Yodpaiboon said that the southwest monsoon triggered rainfall in Sukhothai, and that the Yom River must be closely monitored and local residents should pay attention to weather forecasts.

In northern province of Phichit, flooding is still critical after waters from swollen Yom River, combined with flash flood in canals flowing from another province deluged many districts. Some areas of Phichit are under one meter of water. The local irrigation office is working to divert water from the Yom River into a canal outlet, connecting with another river, to ease the current flooding.