The new Hennessey pool is amazing. But if you get caught in it after hours it will mean a hefty citation for trespassing from the Hennessey Police. Security cameras are now in operation and can see all areas of the pool inside and out. These are monitored 24/7 by the police department. The pool hours of operation are: Monday – Saturday from 12:00 to 6:00 pm, and Sunday 1:00 to 6:00 pm. Night Swims: (Tuesday, Thursday, and Sunday) 7:00 to 9:00 pm.