The Gasconade River rose above flood stage at Jerome Tuesday morning, enough that area residents were advised to evacuate.
According to the National Weather Service in Springfield, the river reached flood stage, which is 15 feet, at Jerome at 1:45 p.m.
Tuesday afternoon, the river had risen to 16.3 feet.
The Phelps County Sheriff's Department is advising residents in the Jerome community to evacuate their homes.
The Jerome area will remain under a flood warning until Saturday afternoon. The National Weather Service predicted that the river will continue to rise to near 29 feet by early Thursday morning.
At 27 feet, floodwaters reach the BNSF Railroad main line near Jerome. The river is expected to fall below flood stage by early afternoon on Friday.
The National Weather Service issued a flood warning for small streams in much of south central Missouri including Dent, Maries and Pulaski counties.
Over the past two weeks, the Rolla area has had 1.56 inches of rain and more rain is in the forecast for the next week.
Local law enforcement officials reported no emergencies or problems related to the rising rivers.