Monster Splash features trick-or-treating around the pool decks, a floating pumpkin patch, and stations to decorate pumpkins.
Guests can also take a plunge in the pool for recreational swimming or tackle a chilling challenge with an inflatable obstacle course.
Photo booths will be set up to snap delightfully spine-tingling memories.
Bewitchingly-tasty snacks, beverages, and more will be available for purchase.
Registration is $12 for children 12 and younger and includes a pumpkin; adults are free.
Lifeguards will be on duty; children 6 and younger must be accompanied by an adult in the water — one adult per child under 6 years of age.
Register online at yourirvine.org (Open in new window).