Lake Innisfree (also known as Lake Isle or Interlaken, and originally as Reservoir No. 1) is a man-made lake and former reservoir in the city of New Rochelle, in Westchester County, New York. The lake is located along the border of the neighboring town of Eastchester, and its eastern end abuts the Hutchinson River Parkway. The lake takes its name from the poem Lake Isle of Innisfree by W. B. Yeats.