DALLAS (AP) — Four men remain missing after a West Texas RV park was overrun by raging floodwaters and authorities are awaiting daybreak to resume their search.

Texas Game Warden Rachel Kellner said early Tuesday that the South Llano River at Junction is a "muddy mess," full of debris and too dangerous to search until after sunrise.

Kellner says the men are co-workers whose recreational vehicle was among several swept away in the floods after heavy rain late Sunday.

Emergency personnel in helicopters and boats rescued 19 people Monday in the small city about 140 miles (225 kilometers) west of Austin.

Kellner says she knows of no one else still missing.

She says all those rescued Monday were checked out by medical emergency personnel. She doesn't know if any of them required hospitalization.