Rising water along the Guadalupe River has prompted Comal County officials to order people in a stretch of riverfront areas to leave immediately.

In a post Thursday on the official Comal County Facebook page, the county issued a mandatory evacuation notice “for all areas along the Guadalupe River from the Comal County line to FM 311 due to river flooding.”

The county said the evacuation applies only to “the area from the Comal County line at Guadalupe State Park along the river to FM 311.” Officials urged residents in that area to leave now and to take family members, pets and essential medications.

“Do not wait to see how conditions develop,” the county said. “Leave while roads are still passable.” Officials also warned people not to drive through flooded roads.

Spring Branch Middle School is available for anyone needing shelter, according to the county. The address is 21053 TX-46 in Spring Branch.

Anyone unable to evacuate or needing assistance was told to call 911.