After the devastating effects of Hurricane Alex, fresh storms are threatening to overwhelm the Mexico-Texas border region.
Mexican authorities have been forced to open dams, causing water to flood various nearby towns.
In Laredo Texas, people living near the Rio Grande River have had to leave their homes. This latest storm is part of a tropical depression in the Gulf of Mexico.
Thousands of Mexicans evacuated after Hurricane Alex last week are still living in temporary shelters.
Volunteer worker, Ricardo Soto, said: “This shelter can hold up to 120 people, but we’ve gone past that number. We’re up to 350.”
This latest heavy rainfall has caused flooding of the Rio Grande river, which marks the boundary between Mexico and the US. Two bridges linking the countries have now been closed.