The Verkeerder Kill, sometimes Verkeerderkill and locally shortened to Kaidy Kill is an stream in Ulster County, New York, United States. It rises on the Shawangunk Ridge, in the town of Wawarsing, and flows southwards through the town of Shawangunk, toward the Shawangunk Kill, itself a major tributary of the Wallkill River. Ultimately it is a part of the Hudson River's watershed.