Volunteers load bottles of water for flood victims in Villahermosa, Mexico, Sunday, Nov. 4, 2007. Mexico's President Felipe Calderon called the flooding one of Mexico's worst recent natural disasters, submerging at least 80 percent of the oil-rich Tabasco state and destroying or damaging the homes of as many as half a million people. At least 8 people have died. <br><a href="javascript:void(window.open('http://video.ap.org/vws/search/aspx/ap.aspx?t=s59&p=ENAPworld_ENAPworld&g=1105dvs_mexico_floods&f=PABUT','_blank','width=788,height=598,status=1,scrollbars=1,resizable=1'));"> AP Video: Mexican State Flooded; More Rain Coming</a>

VILLAHERMOSA, Mexico — Authorities worked early Monday to deliver badly needed food and water to thousands of residents stranded by devastating floods that have damaged the homes of up to 500,000 people.

Since swollen rivers first broke their banks on Oct. 28, flood waters have isolated many Gulf coast communities. Thousands of residents who rescuers haven't been able to reach have run out of food, water and are living with no electricity and no way to flee.

"People are fighting over food and water, and the lack of electricity and running water are making life in the city impossible," said Martha Lilia Lopez, who has been handing out food to victims on behalf of a nonprofit foundation she heads.

Authorities said two more bodies were found Sunday floating in brackish waters covering much of the region. If confirmed the deaths were caused by the flooding, the disaster's toll would stand at 10.

"We are seeing one of the worst natural catastrophes in the history of the country," President Felipe Calderon said in Tabasco state. "Not only because of the size of the area affected, but because of the number of people affected."

Many in Tabasco remained camped out on the rooftops or upper floors of their flooded homes to guard their possessions from looters, but their resolve was running out — along with essential supplies.

"I would prefer to be in my house instead of a shelter, but we ran out of everything," said Patricio Bernal, 53, who was evacuated by boat along with his wife from their home in the state capital, Villahermosa.

"We spent days without food. We thought we were going to die," said Marta Vidal, 47, who was taken to safety by helicopter.

Some desperate residents in Villahermosa broke into shuttered stores and took food and household goods, and police reported detaining about 50 people for looting over the last couple of days. But Ortiz called those "isolated incidents."