Lake Pleasant Regional Park is a large outdoors recreation area straddling the Maricopa and Yavapai county border northwest of Phoenix, Arizona. The park is located within the municipal boundaries of Peoria, Arizona, and serves as a major recreation hub for the northwest Phoenix metropolitan area. It is operated by the Maricopa County Parks and Recreation De…Lake Pleasant Regional Park is a large outdoors recreation area straddling the Maricopa and Yavapai county border northwest of Phoenix, Arizona. The park is located within the municipal boundaries of Peoria, Arizona, and serves as a major recreation hub for the northwest Phoenix metropolitan area. It is operated by the Maricopa County Parks and Recreation Department.