The woman and her four great grandchildren were found dead after they were swept by fast-moving flood waters in the eastern Texas city of Palestine yesterday.
Two of the children were found in the front yard of a home. The other two children and the woman were found behind some houses.
Officials announced a sixth fatality today.
The mayor of Palestine, Bob Herrington, said in a statement, "The City of Palestine has suffered the worst flooding event in my 59 years of living here. I don't recall ever seeing this much water rise so fast and in such a short period of time...Our first responders worked through the night and made numerous high water rescues."
The bodies have been taken to Tyler, Texas, for autopsies. More than 7 inches of rain was reported in less than an hour at the city of Palestine's water treatment plant.
A task force has been assembled to search for a person who went missing in rural Anderson County.