Business Baton Rouge combined riverboat casino earnings fall 1.5% from July to August By Eric L. Taylor - September 16, 2022 FacebookTwitterLinkedinEmailPrint The latest report from the Louisiana Gaming Control Board shows Baton Rouge’s three riverboat casinos earned a combined $19 million in August, or 1.5% less than in July. But that total is still $3 m… Already an INSIDER? Sign in.