The Jacqueline Kennedy Onassis Reservoir, also known as Central Park Reservoir, is a decommissioned reservoir in Central Park in the borough of Manhattan, New York City, stretching from 86th to 96th Streets. It covers and holds over of water. Croton Aqueduct Board president Nicholas Dean proposed the construction of Central Park around its receiving reservoir (later the Great Lawn and Turtle Pond) in the 1850s. As part of this project, the Central Park Reservoir was completed in 1862. The reservoir was decommissioned in 1993, after it was deemed obsolete, and control was transferred to the Department of Parks and Recreation in 1999. The Central Park Reservoir was renamed in honor of Jacqueline Kennedy Onassis in 1994 to commemorate her contributions to the city and because she enjoyed jogging in the area. History Design and construction In the 1850s, Central Park was proposed by Croton Aqueduct Board president Nicholas Dean, who chose the site because the Croton Aqueduct's , receiving reservoir would be in the geographical center. This reservoir, built in 1842, was known as the Yorkville Reservoir or the Lower Reservoir and was located on what is now the site of Turtle Pond. The site to the north was marshland, drained by the Sawkill. In 1857 a design competition was held for Central Park. The applications were required to contain extremely detailed specifications, including at least four east–west transverse roads through the park, a parade ground of , and at least three playgrounds of between . Furthermore, the plans had to incorporate a larger "Upper Reservoir" for the Croton Aqueduct. The winning design was Frederick Law Olmsted and Calvert Vaux's Greensward Plan. Vaux designed its two pumphouses of Manhattan schist with granite facings. It was never a collecting reservoir, but rather, supplemented the smaller, nearby receiving reservoir. For several months, Central Park's commissioners faced delays and resistance from the New York City common council while attempting to gain funding. A dedicated work force and funding stream was not secured until June 1858. The landscaped Upper Reservoir was the only part of the park that the commissioners were not responsible for constructing; instead, the Reservoir would be built by the Croton Aqueduct board. Work on the Reservoir started in April 1858. The southern section of Central Park below 79th Street was mostly completed by 1860, and the Croton Aqueduct board also started filling in the Reservoir around this time. The Upper