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.  Authorities say operator1 was treated and released for a large head laceration. The department says the other operator was seriously injured and first responders carried him in a basket up the cliffside at the dam.  The other operator was taken to Shock Trauma.  Investigators say both men were in a no trespass zone and were boating without permits