9 May 2011
Last updated at 23:40
Flooding in the city of Memphis, in the US state of Tennessee, has forced the evacuation of at least 1,300 homes.
Forecasters say the Mississippi River is likely to crest at 48ft (14.6m) late on Monday - earlier than expected - but the mayor says the city is ready for it.
Mayor AC Wharton said precautions such as door-to-door warnings had prepared the city. Patrols have also been stepped up to prevent the looting of abandoned houses.
Officials say they are confident that levees along the river will hold, and that the authorities have 20,000 sand bags in reserve in case of a breach.
In downtown Memphis, the river had swollen to three miles (4.8km) wide on Monday from its typical width of half a mile, local media said.
About 400 people are staying in shelters.
Schools and businesses have also been affected by the rising waters. Bob Nations, director of the Shelby County Office of Preparedness, has said the flood in Memphis "is going to be an expensive one".
Officials have said they are disturbed by the number of people who are coming into close contact with the floodwater, which could cause disease and sickness.
Forecasters have warned that rain expected at the end of the week could make flooding worsen in low-lying areas.
Last week, US President Barack Obama declared regions in the states of Mississippi, Tennessee and Kentucky disaster areas, making the states eligible for federal help with relief efforts.