Lake Marcia is a 20-acre spring-fed lake at High Point State Park in Sussex County, New Jersey. Its waters are cool and refreshing for swimmers. The beach is protected by lifeguards ensuring their safety. From the otherside, across the beach away from swimmers, one can sit in tranquility just gazing at the water and the rich flora surrounding it.
The lake can be viewed from the highest point of the park where the High Point Monument, an obelisk, stands.