Last week on this program, I narrated a feature on the joys of kayaking on the Prettyboy Reservoir in Northern Baltimore County amid the glorious colors of fall. The next day, I received a letter from an attorney at the Baltimore Department of Public Works, which owns the reservoir.The letter said that city officials had heard my show and then checked their records and found that I did not have the proper sticker for boating on the reservoir. ----Failure to follow the City of Baltimore Watershed Regulations is...subject to fines up to $1,000,---- the letter warned.