RedactedNarrative: Operator was traveling upstream on the Loosahatchie river nearing the North Watkins road bridge in N.E.Shelby county. The Mississippi river stage on the Memphis gauge was approximately 39.0 feet, hence pushing the Loosahatchie river completely out of its normal bank. A power line that crosses the Loosahatchie which is normally 40'' above the waterline is now only 1-2 feet above the waterline and is very difficult to see, for it blended in with the shadows of the flooded vegetation and upcoming bridge. Operator hit the powerline at cruising speed, which caused his vessel to ramp and roll over ejecting both he and his dog. operator was able to swim out from under his overturned vessel and on to the top of the capsized vessel and call 911 for help.