MAHWAH, N.J. – County Executive Jim Tedesco, the Board of Commissioners, and the County Parks Department announces that starting Saturday, May 25 at 10 a.m., the Lakes at Darlington County Park will reopen for swimming activities. The upper lake, home to the Wibit Splash Zone at Darlington Lake water obstacle course will also be open to all residents above 39 inches tall, for an additional fee.