RedactedNarrative: The Baltimore Department of Public Works says two men who were rescued after being injured while kayaking at the Prettyboy Dam have been charged with trespassing.  DPW says Baltimore Environmental Police charged subjects, both 21, after with the misdemeanor offense after they fell 200 feet on Sunday at the dam in Parkton in Baltimore County.  The department says the operator was seriously injured and first responders carried him in a basket up the cliffside at the dam.  The operator was taken to Shock Trauma.  Investigators say both men were in a no trespass zone and were boating without permits