Waterwitch, NEW JERSEY - 1915 - Bathing Beach: Waterwitch or Water Witch is an unincorporated community located within Highlands in Monmouth County, New Jersey, United States. Waterwitch was the setting of The Water-Witch, a novel by James Fenimore Cooper. This Divided Back Era postcard, mailed in 1915, is in good condition, but there is edge wear and a small crease to the card upper right hand corner. The American News Company. No. M14691.