She was speaking during a working trip to the flooded province Thursday.
Yingluck and her team waded through kneehigh brownish water in the heart of the provincial capital to hand out food and other relief items.
The prime minister said she was confident that the situation would soon return to normal after relevant officials were successful in blocking water from the Yom River from seeping through the barriers. It is because of this leakage that Sukhothai was flooded, even though the river did not overflow.
The Nation