ROSENBERG, Texas -- The seemingly ceaseless rain swept across areas of soggy Texas again on Saturday although new serious flooding appeared to be avoided.

At least 31 people have been killed in storms that began in Texas and Oklahoma last weekend. Twenty-seven of the deaths have been in Texas alone, and 11 people were still missing Saturday.

As much as 3 1/2 inches (7.62 centimetres) of rain fell Saturday afternoon and evening in Houston, feeding fears of renewed flooding. Officials said bayous were responding well and no new evacuations were ordered or recommended in low-lying and riverfront areas of Southeast Texas outside the nation's fourth-largest city.

The Brazos River southwest of Houston was the main area of concern as floodwaters moved from North and Central Texas downstream toward the Gulf of Mexico.

A creek that empties into the Brazos River -- which is expected to rise until Monday morning and crest at 50 feet (15 metres) -- went up 4 feet (1.2 metres) between the time Ricky McCullough, 47, and a friend measured it on Friday night and Saturday morning. An alligator poked its snout above water as he talked, followed by a black water moccasin snake slithering along the muddied water.

"I'm concerned about it enough, but I'm a lot more concerned because we have a lot of older people living down here," he said.

He's also worried about the forecast of heavy rains -- about 1 to 2 inches (2.5 to 5 centimetres) projected for the greater Houston area, according to the National Weather Service. But lead forecaster Scott Overpeck in the Houston office said the storms are expected to be slow-moving, and if they stall out, portions of the area could receive between 4 to 5 inches (10 to 12.5 centimetres) in just a few hours.

Earlier in the week, the Colorado River in Wharton and the San Jacinto River near Houston were threatening homes, but the National Weather Service said both are expected to recede below flood stage by Sunday. Wharton authorities said Saturday they were considering lifting a mandatory evacuation; residents from 30 homes were ordered to evacuate Friday.

In Central Texas, about 2,000 volunteers and 100 members of an elite search and rescue team searched for a group of people whose vacation house was swept away in a massive flood on the Blanco River.

Among the missing is 6-year-old William Charba, the son of Randy Charba, 42, and Michelle Charba, 43. Michelle's body was found Wednesday. Michelle's mother, Sue Carey, 71, is still missing, but officials said late Friday they had identified the remains of her father, retired dentist Ralph Carey, 73.

Jonathan McComb, the lone survivor from the house, and his family had joined the Charbas and the Careys for the Memorial Day holiday weekend, all coming from Corpus Christi. McComb's wife, Laura, 33, and 4-year-old daughter, Leighton, are still unaccounted for. The body of their 6-year-old son, Andrew, was found Wednesday in the river.

This week's record rainfall in Texas eased the state's drought and swelled rivers and lakes to the point that they may not return to normal levels until July.

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Associated Press reporters Seth Robbins in Wimberley, Texas, and Allen Reed in Dallas contributed to this report.