 WTOP News. It is not third time lucky for the Anacostia River Splash. This afternoon's scheduled event to let D.C. residents swim legally in the Anacostia has been postponed again. River keeper Trey Sherrod telling NBC4. That little storm came through Wednesday night. We didn't think that would cause us any problems. There were no documented sewage overflows. So on Thursday morning, I was actually in the water to install the swim ladders that are behind us.