High waters flooded neighborhoods around Houston on Saturday following heavy rains that have already resulted in crews rescuing more than 400 people from homes, rooftops and roads engulfed in murky water. Others prepared to evacuate their property.

Floodwaters inundated a wide region Saturday, from Houston to rural East Texas, where game wardens rode airboats through waist-high waters rescuing both people and pets who did not evacuate in time. One crew brought a family and three dogs aboard as rising waters surrounded their cars and home. A flood watch remained in effect through Sunday afternoon as forecasters predicted additional rainfall Saturday night to the soaked region and the likelihood of major flooding.

“It’s going to keep rising this way,” Miguel Flores Jr. of Kingwood said. “We don’t know how much more. We’re just preparing for the worst.”

Aron Brown, 45, and his wife Jamie Brown, 41, were two of the many residents who drove or walked to watch the rising waters near a flooded intersection close to the San Jacinto River in the northeast Houston neighborhood of Kingwood.