The Sabine River at Deweyville, Texas, broke the unofficial highest river level set over 130 years ago and is headed for an even higher crest, completely isolating the small Newton County town of about 1,200. Mandatory evacuations were ordered in Deweyville after a week of heavy rain pushed the Sabine River over historic flood levels Monday evening.

More than 400 Newton County homes have been flooded by the swollen Sabine, and officials told NBC Dallas-Fort Worth that they fear all of Deweyville’s homes will be flooded. Newton is among nearly 20 Texas counties under a state of disaster declaration, according to the Associated Press. “No residents of the town have ever seen a flood in Deweyville like what’s occurring,” said meteorologist Jonathan Erdman. READ MORE