Lake Gregory is under a caution level. For your safety, please follow the signage posted around the lake. For swimming & boating info, contact The Lake Gregory Company at www.lakegregory.com or call 909-338-2233.
Located in Ontario, CA where business and culture meet, Cucamonga-Guasti Regional Park provides 150 acres of outdoor recreation activities in an urban setting.
Enjoy a wide range of activities including two lakes for fishing, a swim complex with water slides, zero depth water play park, picnic tables and group picnic shelters for corporate events, large parties and family reunions.