The Ogeechee River has crested at flood levels and is expected to begin ebbing by Saturday, but river advocates are still concerned about pollutants in the waters. The Ogeechee reached a few inches over 11 feet Wednesday, National Weather Service meteorologist Jonathan Lamb said. The Ogeechee River rose to 11.3 feet Thursday afternoon, where it is expected to crest and only slowly recede, according to National Weather Service Meteorologist Steve Rowley.