Meanwhile, the Kaskaskia River in Vandalia remains under a flood warning. The National Weather Service says the Kaskaskia River in Vandalia was at 23.5 feet as of last night and is now forecast to crest near 23.8 feet around midnight tonight, then fall below flood stage tomorrow morning. The agriculture levee begins to be slightly overtopped at 23 feet with moderate flooding beginning at 24 feet.