The Putnam County Sheriff's Office and Carmel Police will be cracking down on impaired driving this weekend.  The statewide STOP-DWI Crackdown efforts start on Friday and will end on Monday. New York State Police, County Sheriffs and municipal law enforcement agencies will be out in force in a coordinated effort to reduce the number of impaired related injuries and deaths this St Patrick's Day weekend.  Sheriff Robert Langley says impaired driving is completely preventable, all it takes is a little planning.  Anyone headed out for St. Patrick’s Day, is encouraged to designate a responsible and sober driver.