Instruct: Given a question, retrieve documents that can help answer the question.
Query: When was the first aqueduct built?
Rome's first aqueduct was built in 312 BC, and supplied a water fountain at the city's cattle market. By the 3rd century AD, the city had eleven aqueducts, sustaining a population of over a million in a water-extravagant economy; most of the water supplied the city's many public baths. Cities and towns throughout the Roman Empire emulated this model, and funded aqueducts as objects of public interest and civic pride, "an expensive yet necessary luxury to which all could, and did, aspire".[1]
First, under the direction of Piero da San Casciano, an aqueduct was constructed from the Castella higher up the slope of Monte Morello to a small reservoir he built on the hill above the villa. Later, when more water was needed, a second aqueduct was built from another spring at Petraia.
The Crescent aqueduct was one of two that crossed the Mohawk River, the other was at Rexford. The one in Crescent was called the Lower Mohawk Aqueduct, and the one at Rexford was the Upper Mohawk Aqueduct. When the Erie Canal was widened in 1842 a second larger Crescent aqueduct was built beside the first one. Afterwards the piers of the 1825 aqueduct were used to support a plank road at one point and later an iron toll bridge. The Lower Mohawk Aqueduct of 1842 was in length, wide (interior width) and had 26 stone arch spans. It stood for 73 years until the New State Barge Canal system opened in 1915. It was the longest aqueduct in the state.
The Key Bridge replaced the older Aqueduct Bridge. The first Aqueduct Bridge was built in 1830 to carry the Chesapeake and Ohio Canal across the Potomac to connect with the Alexandria Canal on the Virginia shore. The bridge was converted into a roadway during the American Civil War. In 1866, the canal was restored and a new wooden roadway built over it atop trestles. The 1830 bridge was torn down in 1884, and a new structure built which opened in 1889. The Washington and Virginia abutments still survive. Both are located a short distance west of the Key Bridge. Between the two abutments, a pier remains in the river near the Virginia shore (See Demolition of Aqueduct Bridge).
Proposals were made to replace the Aqueduct Bridge as early as 1901. But these proposals were delayed when the McMillan Plan was issued in 1902. The plan's proposals for new bridges across the Potomac called into question whether Aqueduct Bridge should be replaced or merely torn down. In the meantime, Congress approved repairs to the bridge in 1902 1908, and 1913.
The Roquefavour Aqueduct () is an aqueduct in Ventabren, near Aix-en-Provence, Bouches-du-Rhône, France. The aqueduct was first planned in 1565, but it was not realized until the 19th century. It was designed by Jean François Mayor de Montricher, built between 1841 and 1847, and is the largest stone aqueduct in the world. It was designated as a ""monument historique"" (national heritage site) in 2002.
The First Aqueduct, built of two parallel precast concrete pipes, ranging in diameter from , branches from the Colorado River Aqueduct in San Jacinto, California just north of the San Jacinto River, continuing south to its terminus at San Vicente Reservoir. There are seven tunnels on the First Aqueduct, which range in length from . The total capacity of the First Aqueduct is .
The Répudre Aqueduct () is the first aqueduct built on the Canal du Midi. Pierre-Paul Riquet designed it to cross the Répudre River. It was built by Emmanuel d'Estan. It was designed in 1675 and completed in 1676, but was severely damaged that winter and had to be rebuilt. It is one of three original aqueducts created by Pierre-Paul Riquet during the building of the canal from 1667 to 1681.
The Fresquel Aqueduct () is one of several aqueducts on the Canal du Midi. Until its building, the canal crossed the River Fresquel on the level. Built in 1802-1810, the structure is near Carcassonne. It was built when the canal was rerouted to pass through Carcassonne.
A storehouse, located just northeast of the dam, was built in 1900 to house wooden stop planks used to regulate flow. This building was converted to house electrical equipment when the hydroelectric facility was built. Below the dam, to the northeast of the channel to Framingham Reservoir No. 3, is the head house for the Weston Aqueduct. Built in 1903, it was designed by Shepley, Rutan and Coolidge to harmonize with the existing gate house. Adjacent to this head house is the head house for Shaft #4 of the Hultman Aqueduct, built 1939-40. The Hultman Aqueduct is a high-pressure underground aqueduct carrying water from Wachusett Reservoir to staging facilities closer to Boston, and is in active service. This head house, also designed to harmonize with the previous buildings, was designed by Densmore, LeClear & Robbins, who also designed similar structures for the systems of the Quabbin Reservoir. There are also two modern buildings on the site (built in the 1970s) that are not architecturally sympathetic to the others, and a small cluster of 19th century farm buildings that were moved when the dam was built.
The Croton Aqueduct or Old Croton Aqueduct was a large and complex water distribution system constructed for New York City between 1837 and 1842. The great aqueducts, which were among the first in the United States, carried water by gravity from the Croton River in Westchester County to reservoirs in Manhattan. It was built because local water resources had become polluted and inadequate for the growing population of the city. Although the aqueduct was largely superseded by the New Croton Aqueduct, which was built in 1890, the Old Croton Aqueduct remained in service until 1955.
The same period also saw Telford involved in the design and construction of the Shrewsbury Canal. When the original engineer, Josiah Clowes, died in 1795, Telford succeeded him. One of Telford's achievements on this project was the design of Longdon-on-Tern Aqueduct, the cast-iron aqueduct at Longdon-on-Tern, pre-dating that at Pontcysyllte, and substantially bigger than the UK's first cast-iron aqueduct, built by Benjamin Outram on the Derby Canal just months earlier. The aqueduct is no longer in use, but is preserved as a distinctive piece of canal engineering.
The Oxford Canal had been built by James Brindley and carried coal to large parts of southern England. However it did not provide a sufficiently direct route between the Midlands and London. As a result, a new canal was proposed to run from the Oxford Canal at Braunston, near Rugby, and to end at the Thames at Brentford, a length of ninety miles. Jessop was appointed Chief Engineer to the Canal Company in 1793. The canal was especially difficult to plan because, whereas other canals tended to follow river valleys and only crossed a watershed when unavoidable, the new canal had to cross the rivers Ouse, Nene and others. An aqueduct was built at Wolverton to carry the canal across the Ouse valley. Whilst the three-arch stone aqueduct was being built, a set of nine temporary locks were used to carry the canal down one side of the valley and up the other. The aqueduct failed in 1808, and was replaced by an iron one in 1811, the iron trough design sharing a similar structure to Longdon-on-Tern Aqueduct and the Pontcysyllte Aqueduct built by Thomas Telford. It is known as the Cosgrove aqueduct and was designed and built by Bevan.
Although particularly associated with the Romans, aqueducts were devised much earlier in Greece and the Near East and Indian subcontinent, where peoples such as the Egyptians and Harappans built sophisticated irrigation systems. Roman-style aqueducts were used as early as the 7th century BC, when the Assyrians built an 80 km long limestone aqueduct, which included a 10 m high section to cross a 300 m wide valley, to carry water to their capital city, Nineveh.
The first water supply systems which were built in Istanbul date back to the foundation of the city. Two of the greatest aqueducts built in the Roman period are the Mazulkemer Aqueduct and the Valens Aqueduct. These aqueducts were built in order to channel water from the Halkalı area in the western edge of the city to the Beyazıt district in the city center, which was known as the "Forum Tauri" in the Roman period. After reaching the city center, the water was later collected in the city's numerous cisterns, such as the famous Philoxenos (Binbirdirek) Cistern and the Basilica (Yerebatan) Cistern. 
The Gozo Aqueduct is an aqueduct on the island of Gozo, Malta. It was built by the British between 1839 and 1843 to transport water from Għar Ilma in the limits of Kerċem to the capital Victoria. A reservoir was built within the ditch of the Cittadella to store water. An obelisk was built near the reservoirs to commemorate the opening of the aqueduct.
The aqueduct was eventually closed and it was replaced by a system of pipes and electrical pumps. The aqueduct is now in ruins, but some of the arches still stand.
The community received its first name, Arch Hill, after an arched bridge was built over the present-day U.S. Route 9 in 1839. The bridge carried the Old Croton Aqueduct over the highway until 1924, when the bridge was deemed to be a traffic hazard and was demolished. The aqueduct was then rerouted to flow beneath the highway. In November 1998, long after the aqueduct was shut down, the bridge was replaced as a crossing for aqueduct walkers, bikers, and equestrians over the particularly dangerous section of the highway. The new bridge connects the Rockefeller State Park Preserve with Rockwood Hall, and was built to resemble the two bridges over Route 117 which the Rockefellers had built.
Duck Creek Aqueduct, also known as the Metamora Aqueduct and Whitewater Canal Aqueduct, is a historic aqueduct carrying the Whitewater Canal over Duck Creek in Metamora Township, Franklin County, Indiana. It is the only surviving covered wood aqueduct in the United States as such it is a form of covered bridge. It is a single-span Burr through truss aqueduct and measures approximately long, wide, and deep. The original aqueduct was built between 1839 and 1843. The present structure was built in 1846, after the original aqueduct was washed out in a flood. It was strengthened in 1868, and repaired in 1901. After abandonment and deterioration, the Duck Creek Aqueduct was restored to its present appearance in 1946-1949.
Early aqueducts such as the three on the Canal du Midi had stone or brick arches, the longest span being 18.3 metres on the Cesse Aqueduct, built in 1690. But, the weight of the construction to support the trough with the clay or other lining to make it waterproof made these structures clumsy. In 1796 Longdon-on-Tern Aqueduct, the first large cast iron aqueduct was built by Thomas Telford at Longdon-on-Tern on the Shrewsbury Canal. It has a total length of 57 metres across three intermediate piers. Within ten years Telford had completed the far more ambitious Pontcysyllte Aqueduct in Wales on the Llangollen Canal over the River Dee valley, with a total length 307 metres. Other cast-iron aqueducts followed, such as the single-span Stanley Ferry Aqueduct on the Calder and Hebble Navigation in 1839, with its innovative 50-metre through arch design.
Whether state-funded or privately built, aqueducts were protected and regulated by law. Any proposed aqueduct had to be submitted to the scrutiny of civil authorities. Permission (from the senate or local authorities) was granted only if the proposal respected the water rights of other citizens; on the whole, Roman communities took care to allocate shared water resources according to need.[17] The land on which a state-funded aqueduct was built might be state land (ager publicus) or privately owned, but in either case was subject to restrictions on usage and encroachment that might damage the fabric of the aqueduct. To this end, state funded aqueducts reserved a wide corridor of land, up to 15 feet each side of the aqueduct's outer fabric. Ploughing, planting and building were prohibited within this boundary. Such regulation was necessary to the aqueduct's long-term integrity and maintenance but was not always readily accepted or easily enforced at a local level, particularly when ager publicus was understood to be common property. Some privately built or smaller municipal aqueducts may have required less stringent and formal arrangements.[18]
The Second Aqueduct was not built as a single contiguous conduit. For design and construction purposes the aqueduct was divided into a Northern and Southern sections and the two are connected by the San Francisquito Tunnels, which are part of the First Aqueduct.
The main aqueduct of Odessos was recently discovered during rescue excavations north of the defensive wall. The aqueduct was built in three construction periods between the 4th and the 6th centuries; in the 4th century the aqueduct was built together with the city wall, then at the end of the 4th to early 5th centuries when a pipeline was laid inside the initial masonry aqueduct. Thirdly in the 6th century an extra pipeline was added parallel to the original west of it and entered the city through a reconstruction of the fortress wall.
Josiah Clowes was appointed Chief Engineer, but died in 1795 part way through construction. He was succeeded by Thomas Telford, then just establishing himself as Shropshire's County Surveyor and already engaged on the Ellesmere Canal slightly further north. The Ellesmere Canal was originally intended to connect Chester with Shrewsbury, but never reached the latter – it became the modern Llangollen Canal and Montgomery Canal.
One of Telford's first tasks was to build Longdon-on-Tern Aqueduct as a rebuild of a stone aqueduct over the River Tern at Longdon-on-Tern which had been built by Clowes but swept away by floods in February 1795. Telford's stonemason instincts initially led him to consider replacing the original structure with another stone-built aqueduct, but the heavy involvement of iron-masters in the Shrewsbury Canal Company, notably William Reynolds, led him to reconsider. Instead, it was rebuilt using a cast iron trough cast in sections at Reynolds' Ketley ironworks and bolted together in 1796. The main trough was wide and deep, with a narrower trough to one side which formed the towpath. The aqueduct was the world's first large-scale iron navigable aqueduct, though it was narrowly predated by a much smaller structure on the Derby Canal built by Benjamin Outram. The aqueduct still stands today, though it is isolated in the middle of a field. This successful use of an iron trough to contain the water of a navigable aqueduct casts the Tern aqueduct in the role of Telford's prototype for the much longer Pontcysyllte Aqueduct on the Llangollen Canal, where he mounted the iron trough on high masonry arches.
The Diocletian aqueduct was destroyed in the invasion of Goths in the middle of 6th century and did not work for thirteen centuries after that.
The first reconstruction of the aqueduct took place during the reign of the Austro-Hungarian Empire (1877–1880). The aqueduct was abandoned from 1932 when the modern water station Kopilica was built.
Seneca Aqueduct — or Aqueduct No. 1 — is a naviduct that carries the Chesapeake and Ohio Canal (C&O) over Seneca Creek in Montgomery County, Maryland. The C&O built eleven aqueducts along its length. Seneca Aqueduct is a unique structure, not only being the first built, but also the only red sandstone aqueduct on the C&O−and the only aqueduct that is also a lock (Lock 24, or Riley's Lock). It is located at the end of Riley's Lock Road in Seneca, Maryland.
The Porta Maggiore is by far the best urban site to visit for an understanding and view of the ancient aqueducts. It is a monumental double archway built of white travertine. It was first known as the Porta Prenestina, perhaps a reference to the road over which is passes (the Via Praenestina). The "gate," built in 52 AD by the emperor Claudius, was originally intended to provide a decorative section of support for two aqueducts, the Aqua Claudia and the Anio Novus. At that time these aqueducts crossed the ancient Via Labicana and Praenestina roads thereby providing the opportunity to create at this location a sort of triumphal arch to the conquest of nature and its conqueror, the emperor Claudius. The two channels of these aqueducts, (the Aqua Claudia and Aqua Anio Novus), one lying on top of the other, can be seen when viewing the cross-section running through the travertine attic at the top of the gate.