ST. LOUIS COUNTY, Mo. – Parts of mid-St. Louis County, from Ladue to Brentwood, saw rising floodwaters along Deer Creek. The steady stream of rain Tuesday morning caused the creek to rise several inches as the morning wore on. Over the course of the lunch hour in Brentwood, one could spot a volleyball, a basketball, branches, and debris move swiftly along the creek. “I have seen it,” Nick Miriani, Advance Carpet One’s installation manager, said.…