Created to provide drinking water to the residents of New York City, Lake Tappan is a man-made reservoir that straddles the border between New York and New Jersey. The lake is still used for drinking water, and so activities like swimming, boating, and otherwise making contact with the water are prohibited. Fishing is permitted from the shore; permits are required for fishers over the age of 16, and the lake is home to perch, catfish, bass, and more. The reservoir is open to visitors between the start of April and the end of November, and there is plenty of parking available.

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