By Sharon Bernstein and Kanishka Singh (Reuters) -Flooding in eastern Kentucky has caused at least three deaths, Governor Andy Beshear said on Thursday, and the death toll may reach double digits as water continues to rise. A series of storms drenching the eastern part of the state have dropped water that has yet to crest, leaving damage that could take years to repair, said Beshear, who declared a state of emergency in six counties on Thursday morning. “We are currently experiencing one of the worst, most devastating flooding events in Kentucky’s history, Beshear said in his emergency declara…