South Beach Swim & Waterpark – San Moritz Dr/South Parking Lot | 10am – 6pm | (Closed)

North Beach Rental Office & Personal Launches – 24171 Lake Drive | 8am – 4pm | (Open) Thursday – Monday | (Closed) Tuesday & Wednesday

San Moritz Lodge – 24640 San Moritz Drive | 9am – 1pm | (Open) Monday, Tuesday and Friday 

Waterslide & Splashpad –  Closed (Currently Under Renovations)


                                                                              ***Lake Gregory Water Quality Update***

We received notice today that Lake Gregory has been moved to a “cautionary” status due to the presence of blue-green algae in our water.  Our marina will continue to remain open for boat and kayak rentals with new winter hours of 8am to 4pm, Thursday through Monday of each week.

Fishing is open from sunrise to sunset and all fish caught here are still safe to eat but should be washed with clean water before cooking.

If you see algae present in the water, please keep children and animals away from it.  As a general rule, we recommend that you not allow your dogs to swim in the lake or drink water from it.

Thank you for your attention to this cautionary update and we continue to welcome guests to scenic Lake Gregory!




If you are looking for a unique outdoor waterplay experience in a breathtaking alpine forest, then Lake Gregory is for you. Surrounded by pine-forested mountains, historic water slides, award winning inflatable water play structures, lifeguards, lots of on-water pedal and paddle boats, cool and clean lake water, delicious snacks and a sandy beach. Lake Gregory is located in the “Swiss Alps of the West”, Crestline, in the San Bernardino Mountain’s historic and scenic Valley of the Moon, perfect for sunbathing, making sand castles, water play, or just a romantic stroll beside the lake.



Bring your Special Event to Lake Gregory!

From the San Moritz Lodge to the Covered Picnic Shelters, Lake Gregory offers several different locations perfectly suited for every type of event.