Up to 120,000 people in northern Shaanxi province have been relocated after 10,000 homes were destroyed by floods and landslides, reports say.
Many thousands have been displaced by the waters
China's state news agency Xinhua said continuous rain since 24 August has caused flooding in more than 50 rivers in Shaanxi.
It said 26 people have been killed so far in Shaanxi since the start of the bad weather.
The Shaanxi Provincial Flood Control and Drought Relief Headquarters has allocated 20 rubber boats and 1,000 life jackets to the counties along the Wei River.
The Wei - the main tributary to the Yellow River - is experiencing its worst flood peak in 22 years.
Thirty-seven counties in the province - about a third of the total - have been affected, the Xinhua website said.
Many of the victims were crushed to death in two landslides, while others have been washed away by floodwater.
Flooding also destroyed a number of roads, bridges, power supply
facilities, buildings and farmland in central Shaanxi and caused
some 80 landslides.
In July, China's President Hu Jintao ordered increased efforts nationwide to fight massive flooding.
More than 600 people have died in 2003 and more than two million have been forced from their homes, Chinese officials say.
This is the first flooding season the new president and his cabinet have collectively faced.
China's flooding season usually beings in June and ends in September.