Louisville’s flood pumping stations along the Ohio River are at work diverting some of the past week’s rain.There’s been nearly 4 ½ inches of rain in the area during the past week, which is causing the Ohio River to rise. The Metropolitan Sewer District is predicting the river to be at 20 feet by Thursday at noon, which is eight feet above normal but still three feet below flood stage.Usually, the flood pumping stations are put into use after the first of the year. But this year, they were started more than a month early. Four of the city’s 16 stations are now in use, and the MSD expects to start up three more by tomorrow.So far, MSD Executive Director Bud Schardein says there haven’t been any system failures caused by the rain. He says the MSD is prepared to put more flood pumping stations into service, if necessary.