The Boyd Lake State Park swim beach reopened Thursday after being closed for the day on Wednesday.Park Manager Fred Bohlmann told 7NEWS tests revealed a high colony count of E. coli bacteria in the water at the beach on Wednesday."We closed it [the beach] to be on the safe side while we retested, " Bohlmann told 7NEWS. "Test results this morning were very consistent with what we normally see, extremely low levels."The Loveland Reporter-Herald reported that the most recent reported incident of bacteria linked to Boyd Lake occurred in 1996, when three youths who had been swimming at the Boyd Lake beach developed shigella poisoning, which is caused by bacteria. The bacteria was never detected at the state park.Read more about Boyd Lake State Park in Loveland on its Web site.