Officially named the Jacqueline Kennedy Onassis Reservoir in 1994, the Reservoir is famed for the 1.58 track that encircles the 106-acre body of water. This favorite jogging spot of Jackie O, Bill Clinton, and a number of other influential people covers approximately 1/8th of the Park and hold over a billion gallons of water.
When the Reservoir was built in 1862, its original purpose was to provide clean water for the city. While this function is not carried out today, the Reservoir does distribute water to other Central Park locations, such as the Pool, the Loch, and the Harlem Meer.
From its 86th street location, the Reservoir offers runners one of the best views of the city skyline, and allows birdwatchers a great location in which to spot herons, egrets, coots, and loons.
— Jesse M. Wheeler