The Waccamaw River is forecast to crest this weekend at just over 12 feet, and fall back below flood stage by Monday.
The river was forecast earlier in the week to rise more than15 feet by Friday.
By comparison, Hurricane Matthew reached approximately 19 feet, and Hurricane Florence last year reached just over 21 feet.
The amount of rainfall for Horry County has also increased, with 10 to 15 inches of rain expected and higher amounts possible in isolated areas.
According to the Waccamaw River flood warning system from the National Weather Service:
At 13 feet, flooding will occur along the Waccamaw in residential areas off Business 501, Highway 905 and Highway 90.
Water levels one foot deep will surround approximately 20 homes in the Savannah Bluff area.
Flood waters will also surround homes in the Lees Landing, Pitch Landing and Riverfront South communities.
Flooding will occur near a few homes on Oak Street as well as at Punch Bowl and Pitch Landing.
At 14 feet, flood waters will worsen and affect several residential properties and roads at Riverfront South, Lees Landing, Savannah Bluff, Pitch Landing, Jackson Bluff and Bucksville.
At 15 feet, residential flooding will continue to worsen. The Conway Marina will be flooded. Railroad trestles in downtown Conway will flood at 15.9 feet.
Check back for updates later today.