The Croton Aqueduct is a masonry tunnel that brought New York City its first supply of clean, plentiful water, and thus contributed to its development as a great metropolis. The Aqueduct was built in response to the fires and epidemics that repeatedly devastated New York City in the late 1700s and early 1800s, owing in part to its inadequate water supply and contaminated wells.
Construction began in 1837 and the first Croton water entered the Aqueduct on June 22, 1842. The first chief engineer of the Aqueduct was succeeded by John B. Jervis of Rome, New York. The Aqueduct carried water 41 miles from the Old Croton Dam in Westchester County, north of New York City, to two reservoirs in Manhattan - on the present sites of the Great Lawn in Central Park and the New York Public Library on Fifth Avenue from where it was distributed.
Its capacity was soon exceeded by the demands of a spiraling population growth to which it actually contributed. Although the Croton Aqueduct was in use until 1955, it was superseded by the New Croton Aqueduct, triple the size, laid further inland, and tunneled deep underground. The New Croton Aqueduct was started in 1885 and went into service in 1890. It currently supplies about ten percent of New York City's water.
Now a National Historic Landmark, the Aqueduct is considered one of the great engineering achievements of the 19th century. The tunnel is an elliptical tube 8.5 feet high by 7.5 feet wide. It is brick-lined and represents an early use of hydraulic cement for most of its length. The outer walls are of hammered stone.
Designed on principles dating from Roman times, the tunnel is gravity fed for its entire length, dropping gently 13 inches per mile. To maintain this steady gradient through a varied terrain, its builders had to cut the conduit into hillsides, set it level on the ground, tunnel through rock, and carry it over valleys and streams on massive stone and earth embankments and across arched bridges. Typically, it is partly buried, with a telltale mound encasing it.
A Brief Overview of The Construction Of The Old Croton Aqueduct
Old Croton Aqueduct Trailway
"The Hudson River Villages' Most Valuable Recreational Amenity"
For more than 150 years, the trail atop the Old Croton Aqueduct or the OCA (as the hikers like to call it) has linked communities and a wealth of historic sites along the lower Hudson River. Locals will often say, "Let's go for a walk along the Aqueduct," referring to the footpath atop the masonry water tunnel. Both the trail and the tunnel (also known as the "tube") comprise the Old Croton Trailway State Historic Park.
To view trail maps of each of the two sections of the OCA click the links below:
Map of the OCA from Van Cortlandt Park to Sunnyside (Irvington)
Map of the OCA from Sunnyside (Irvington) to Croton Gorge Park
For more information about the Old Croton Aqueduct:
Old Croton Aqueduct - As seen on Wikipedia
Old Croton Aqueduct - NYS Office of Parks, Recreation & Historic Preservation
Friends of The Old Croton Aqueduct (FOCA) Website - The Friends of the Old Croton Aqueduct is a private, non profit volunteer organization formed to protect and preserve the Old Croton Aqueduct. FOCA sponsors talks, guided walking tours of the trail, and amazing guided tours inside the actual Aqueduct tunnel. A calendar of Aqueduct related activites is available on the site.
The park was created in 1968 and encompasses the northernmost 26 miles of the Aqueduct and its right-of-way, from Croton Gorge County Park to the Yonkers-New York City line. It lies wholly within Westchester County. It is under the jurisdiction of the Taconic Region of the New York State Office of Parks, Recreation and Historic Preservation.
The appeal of the trail lies in the great diversity of scenes it traverses. Thus, a walk on the Aqueduct can take you not only through stretches of leafy green space but also past backyards and local parks, "Main Street" village centers, great and small historic sites, trickling rivulets and grand Hudson views. It is open to pedestrians, joggers, cyclists, cross-country skiers and equestrians. Photographers, bird watchers, naturalists and historians enjoy it as well. Cyclists are requested to avoid the trail after heavy rains and during the 'mud season.'
A recent reorganization and the introduction of a new park site manager modified the management structure. The park is managed by two people. The Historic Site Manager role was recently assumed by Michael Boyle who succeeds Brian Goodman. The Park is administratively affiliated with Rockefeller State Park Preserve, headed by Alix Schnee. In the past the Old Croton Aqueduct State Historic Park was affiliated with Franklin D. Roosevelt State Park. Besides managing the state's longest and thinnest park (average width is 60 feet), one that passes through a dozen or so municipalities, park management and the Friends will give slide talks about the Aqueduct and trail to interested groups and is available to the general public to answer questions.
For more information about
The Old Croton Aqueduct State Historic Park visit
The Overseer's House
15 Walnut Street, Dobbs Ferry, NY 10522
(914) 693-5259
An elaborate full color map created by The Friends of The Old Croton Aqueduct
detailing the construction and history of The Aqueduct and many of the neighboring historic landmarks
is available for sale at the Overseer's House or
available online. Click Here To Order
From the Friends of The Old Croton Aqueduct (FOCA)
The Friends of The Old Croton Aqueduct Website
Bill Boeckelman
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