Authorities say they are urging residents in a small Central Texas community to evacuate as the nearby Blanco River continues to rise and cause flooding.
Rescue personnel used pontoon boats and a helicopter to evacuate people overnight as floodwaters quickly surrounded their homes.
Sixty-two-year-old Rudy Olivo says rescue crews came through his neighborhood along the banks of the Blanco River about 2:30 a.m. Sunday.
Olivo says water came to the top of the steps leading to his home in San Marcos, which is about halfway between San Antonio and Austin. Other homes in his neighborhood were flooded and many roads in the area were under water.
He says it's the worst flooding he's seen because "the water rose so fast."
The Blanco River swamped sections of Interstate 35 on Sunday, forcing parts of the busy north-south highway to close. The National Weather Service says the river crested Sunday at more than 40 feet; its flood stage is 13 feet.
Hays County sheriff's Lt. Jeri Skrocki said late Saturday that numerous water rescues are underway in Wimberley, about 40 miles southwest of Austin. She says the specific number of rescues or how many people are affected isn't clear.
She says no serious injuries have been reported and that emergency shelters have been set up for residents at schools, a church, a nursing home and a community center.
Rain in many areas is expected to diminish somewhat but forecasts call for continued periods of rainfall through the week, with continued threats of flash flooding.