White Lake in Hardwick, New Jersey, is part of the White Lake Natural Resource Area. It is a deep spring-fed lake with a unique white bottom formed from a limey clay known as marl that is the residue of freshwater mollusk shells. A variety of habitats surround the lake including a fen at the eastern end, a limestone forest and a hemlock forest. Because of the diverse habitat, it is a great botanical site. Several rare sedges, rushes and ferns can be found here. There are other uncommon and showy wildflowers here in season. The flowers attract a diversity of butterflies. Ruins of a marl factory/ice house, used in the past to process lime, and later ice, can be found at the east end of the lake.
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