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The Eiffel Tower is a wrought-iron lattice tower on the Champ de Mars in Paris, France. It is named after the engineer Gustave Eiffel, whose company designed and built the tower.

Constructed from 1887 to 1889 as the entrance to the 1889 World's Fair, it was initially criticised by some of France's leading artists and intellectuals for its design, but it has become a global cultural icon of France and one of the most recognisable structures in the world. The Eiffel Tower is the most-visited paid monument in the world; 6.91 million people ascended it in 2015.

The tower is 324 metres (1,063 ft) tall, about the same height as an 81-storey building, and the tallest structure in Paris. Its base is square, measuring 125 metres (410 ft) on each side. During its construction, the Eiffel Tower surpassed the Washington Monument to become the tallest man-made structure in the world, a title it held for 41 years until the Chrysler Building in New York City was finished in 1930. It was the first structure to reach a height of 300 metres. Due to the addition of a broadcasting aerial at the top of the tower in 1957, it is now taller than the Chrysler Building by 5.2 metres (17 ft). Excluding transmitters, the Eiffel Tower is the second tallest free-standing structure in France after the Millau Viaduct.

The tower has three levels for visitors, with restaurants on the first and second levels. The top level's upper platform is 276 m (906 ft) above the ground - the highest observation deck accessible to the public in the European Union. Tickets can be purchased to ascend by stairs or lift to the first and second levels. The climb from ground level to the first level is over 300 steps, as is the climb from the first level to the second. Although there is a staircase to the top level, it is usually accessible only by lift.

There are 20,000 sparkling lights and 80 km (50 miles) of cables covering the structure. The paper used to print the visitors' tickets in one year weighs 2 tonnes (4,400 pounds). The top of the tower leans away from the sun as the metal facing the sun heats up and expands it can move as much as 18 cm (7 inches) and grow 15 cm (6 inches) taller. The tower was also built to sway slightly in the wind.

The Eiffel Tower was built by Alexandre Gustave Eiffel for the 100th anniversary of the French Revolution. Even though Gustave Eiffel is credited for the Eiffel Tower it was actually two lesser known people who came up with the original drawing of it. These people were Maurice Koechlin and Emile Nouguier. These two men were the chief engineers of Eiffel's engineering firm. The main architect was Stephen Sauvestre.

Koechlin, Nouguier, Sauvestre, and Eiffel submitted the plans to compete for the spot on the champ de mars plot of land, to serve as the expositions entrance. It would also determine the 1889 world's fair centerpiece in Paris. There were 107 bids submitted to construct the Eiffel Tower. Fifty people worked on the design, and more than 100 built the parts. One hundred and thirty two workers assembled the parts on site.

The first digging for the foundations began on January 28, 1887 and all construction was concluded on March 31, 1889. When the tower was built, it was only meant to be kept for 20 years. People did not like the Eiffel Tower and wanted it taken down because they thought is was an ugly structure polluting the scenery of the Paris sky. After the 20 years, the tower became the property of Paris again.

By this time, the city had learned that the tower could be used to help with communications. There was also a metrology lab that had been installed for studies on everything from gravity to electricity. The military used the tower as a wireless telegraph transmitter for communication during battle. The tower was used in the capture of the spy " Mata Hari" during World War I after a message was intercepted. Today, it is used to send radio and television signals to the capital city of Paris and beyond. After people learned about the many benefits the tower provided, no one wanted it to be taken apart.

The Eiffel Tower joined the green energy movement by building two wind turbines on the second level. These wind turbines produce 10,000 kilowatts per hour (13,000 horsepower per hour) of electricity.

Construction

There were 50 architects, engineers, and draftsmen that created 5,300 drawings of the Eiffel Tower before the construction started. Once they had a plan, there were 18,000 pieces built and prepared in Eiffel's factory outside of town. These pieces were created to the accuracy of 1/10 of a millimeter. These pieces were put together to form new pieces that were 5 meters long to be transported to the building site.

There were 132 workers there to assemble the pieces on site. All the pieces were put into place and hooked together by thermally assembled rivets. There were 4 men needed to assemble a single rivet: one person to heat the rivet up, another to hold it in place, a third to shape the head, and a fourth person to beat the rivet with a sledge hammer.

Only of the 2.5 million rivets were assembled on site. The work on the foundations took 5 months. The workers only used spades, and the rubble was taken away by horses and steam locomotives.

There was no problem in building the pillars on the Champ de Mars side of the tower. But on the Seine River side of the tower, foundations used compressed air and corrugated steel caissons five meters under water. The deepest foundations are 15 meters under ground. The feet of the tower are set in each of these foundation ditches. These foundations support the four pillars or truss frames.

The difficulty building the first floor was in bringing building materials and people up to it with a point of departure as in the elevators. The elevators had to be positioned at a slanting angle to meet the horizontal beams on the first floor. The elevator had to use hydraulic jacks to move and erect the elevator up the slanted legs. Currently the hydraulic jacks are not in use due to more advanced technology. The second floor was assembled with cranes that took the same route as the elevators. There was no troubles from this point onward in the construction.

The iron of the Eiffel Tower weighs 7,300 tons, and the addition of lifts, shops and antennae have brought the total weight to approximately 10,100 tons. As a demonstration of the economy of design, if the 7,300 tons of metal in the structure were melted down, it would fill the square base, 125 metres (410 ft) on each side, to a depth of only 6.25 cm (2.46 in) assuming the density of the metal to be 7.8 tons per cubic metre. Additionally, a cubic box surrounding the tower (324 m x 125 m x 125 m) would contain 6,200 tons of air, weighing almost as much as the iron itself. Depending on the ambient temperature, the top of the tower may shift away from the sun by up to 18 cm (7 in) due to thermal expansion of the metal on the side facing the sun.

Wind considerations

When it was built, many were shocked by the tower's daring form. Eiffel was accused of trying to create something artistic with no regard to the principles of engineering. However, Eiffel and his team - experienced bridge builders - understood the importance of wind forces, and knew that if they were going to build the tallest structure in the world, they had to be sure it could withstand them.

He used graphical methods to determine the strength of the tower and empirical evidence to account for the effects of wind, rather than a mathematical formula. Close examination of the tower reveals a basically exponential shape. All parts of the tower were over-designed to ensure maximum resistance to wind forces. The top half was even assumed to have no gaps in the latticework. In the years since it was completed, engineers have put forward various mathematical hypotheses in an attempt to explain the success of the design. The most recent, devised in 2004 after letters sent by Eiffel to the French Society of Civil Engineers in 1885 were translated into English, is described as a non-linear integral equation based on counteracting the wind pressure on any point of the tower with the tension between the construction elements at that point.

The Eiffel Tower sways by up to 9 centimetres (3.5 in) in the wind.

Accommodation

When originally built, the first level contained three restaurants-one French, one Russian and one Flemish -and an "Anglo-American Bar". After the exposition closed, the Flemish restaurant was converted to a 250-seat theatre. A promenade 2.6-metre (8 ft 6 in) wide ran around the outside of the first level. At the top, there were laboratories for various experiments, and a small apartment reserved for Gustave Eiffel to entertain guests, which is now open to the public, complete with period decorations and lifelike mannequins of Eiffel and some of his notable guests.

In May 2016, an apartment was created on the first level to accommodate four competition winners during the UEFA Euro 2016 football tournament in Paris in June. The apartment has a kitchen, two bedrooms, a lounge, and views of Paris landmarks including the Seine, the Sacre Coeur, and the Arc de Triomphe.

Passenger lifts

The arrangement of the lifts has been changed several times during the tower's history. Given the elasticity of the cables and the time taken to align the cars with the landings, each lift, in normal service, takes an average of 8 minutes and 50 seconds to do the round trip, spending an average of 1 minute and 15 seconds at each level. The average journey time between levels is 1 minute. The original hydraulic mechanism is on public display in a small museum at the base of the east and west legs. Because the mechanism requires frequent lubrication and maintenance, public access is often restricted. The rope mechanism of the north tower can be seen as visitors exit the lift.

Engraved names

Gustave Eiffel engraved on the tower the names of 72 French scientists, engineers and mathematicians in recognition of their contributions to the building of the tower. Eiffel chose this "invocation of science" because of his concern over the artists' protest. At the beginning of the 20th century, the engravings were painted over, but they were restored in 1986-87 by the Société Nouvelle d'exploitation de la Tour Eiffel, a company operating the tower.

Aesthetics

The tower is painted in three shades: lighter at the top, getting progressively darker towards the bottom to perfectly complement the Parisian sky. It was originally reddish brown; this changed in 1968 to a bronze colour known as "Eiffel Tower Brown".

The only non-structural elements are the four decorative grill-work arches, added in Sauvestre's sketches, which served to make the tower look more substantial and to make a more impressive entrance to the exposition.

One of the great Hollywood movie clichés is that the view from a Parisian window always includes the tower. In reality, since zoning restrictions limit the height of most buildings in Paris to seven storeys, only a small number of tall buildings have a clear view of the tower.

Maintenance

Maintenance of the tower includes applying 60 tons of paint every seven years to prevent it from rusting. The tower has been completely repainted at least 19 times since it was built. Lead paint was still being used as recently as 2001 when the practice was stopped out of concern for the environment.

The nearest Paris Métro station is Bir-Hakeim and the nearest RER station is Champ de Mars-Tour Eiffel. The tower itself is located at the intersection of the quai Branly and the Pont d'Iéna.

Popularity

More than 250 million people have visited the tower since it was completed in 1889. In 2015, there were 6.91 million visitors. The tower is the most-visited paid monument in the world. An average of 25,000 people ascend the tower every day which can result in long queues. Tickets can be purchased online to avoid the long queues.

Restaurants

The tower has two restaurants: Le 58 Tour Eiffel on the first level, and Le Jules Verne, a gourmet restaurant with its own lift on the second level. This restaurant has one star in the Michelin Red Guide. It is run by the multi- Michelin star chef Alain Ducasse and owes its name to the famous science-fiction writer Jules Verne. Additionally, there is a champagne bar at the top of the Eiffel Tower.

As one of the most iconic landmarks in the world, the Eiffel Tower has been the inspiration for the creation of many replicas and similar towers. An early example is Blackpool Tower in England. The mayor of Blackpool, Sir John Bickerstaffe, was so impressed on seeing the Eiffel Tower at the 1889 exposition that he commissioned a similar tower to be built in his town. It opened in 1894 and is 158.1 metres (518 ft) tall. Tokyo Tower in Japan, built as a communications tower in 1958, was also inspired by the Eiffel Tower.

There are various scale models of the tower in the United States, including a half-scale version at the Paris Las Vegas, Nevada, one in Paris, Texas built in 1993, and two 1:3 scale models at Kings Island, Ohio, and Kings Dominion, Virginia, amusement parks opened in 1972 and 1975 respectively. Two 1:3 scale models can be found in China, one in Durango, Mexico that was donated by the local French community, and several across Europe.

In 2011, the TV show Pricing the Priceless on the National Geographic Channel speculated that a full-size replica of the tower would cost approximately US$480 million to build.

Communications

The tower has been used for making radio transmissions since the beginning of the 20th century. Until the 1950s, sets of aerial wires ran from the cupola to anchors on the Avenue de Suffren and Champ de Mars. These were connected to longwave transmitters in small bunkers. In 1909, a permanent underground radio centre was built near the south pillar, which still exists today. On 20 November 1913, the Paris Observatory, using the Eiffel Tower as an aerial, exchanged wireless signals with the United States Naval Observatory, which used an aerial in Arlington, Virginia. The object of the transmissions was to measure the difference in longitude between Paris and Washington, D.C. Today, radio and digital television signals are transmitted from the Eiffel Tower.

Digital television

A television antenna was first installed on the tower in 1957, increasing its height by 18.7 m (61.4 ft). Work carried out in 2000 added a further 5.3 m (17.4 ft), giving the current height of 324 m (1,063 ft). Analogue television signals from the Eiffel Tower ceased on 8 March 2011.

The tower and its image have long been in the public domain. In June 1990 a French court ruled that a special lighting display on the tower in 1989 to mark the tower's 100th anniversary was an "original visual creation" protected by copyright. The Court of Cassation, France's judicial court of last resort, upheld the ruling in March 1992. The Société d'Exploitation de la Tour Eiffel (SETE) now considers any illumination of the tower to be a separate work of art that falls under copyright. As a result, the SNTE alleges that it is illegal to publish contemporary photographs of the lit tower at night without permission in France and some other countries for commercial use.

The imposition of copyright has been controversial. The Director of Documentation for what was then called the Société Nouvelle d'exploitation de la Tour Eiffel (SNTE), Stéphane Dieu, commented in 2005: "It is really just a way to manage commercial use of the image, so that it isn't used in ways [of which] we don't approve". SNTE made over €1 million from copyright fees in 2002. However, it could also be used to restrict the publication of tourist photographs of the tower at night, as well as hindering non-profit and semi-commercial publication of images of the illuminated tower.

French doctrine and jurisprudence allows pictures incorporating a copyrighted work as long as their presence is incidental or accessory to the subject being represented, a reasoning akin to the de minimis rule. Therefore, SETE may be unable to claim copyright on photographs of Paris which happen to include the lit tower.

Taller structures

The Eiffel Tower was the world's tallest structure when completed in 1889, a distinction it retained until 1929 when the Chrysler Building in New York City was topped out. The tower has lost its standing both as the world's tallest structure and the world's tallest lattice tower but retains its status as the tallest freestanding (non-guyed) structure in France.

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The Eiffel Tower is a wrought-iron lattice tower on the Champ de Mars in Paris, France. It is named after the engineer Gustave Eiffel, whose company designed and built the tower.

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River Thames

Country

England

Counties

Gloucestershire, Wiltshire, Oxfordshire, Berkshire, Buckinghamshire, Surrey, Greater London, Kent, Essex

Towns/cities

Cricklade, Lechlade, Oxford, Abingdon, Wallingford, Reading, Henley-on-Thames, Marlow, Maidenhead, Windsor, Staines-upon-Thames, Walton-on-Thames, Sunbury-on-Thames, Kingston upon Thames, Twickenham, London (inc. the City), Dagenham, Erith, Dartford, Grays, Gravesend

Physical characteristics

Main source

Thames Head, Gloucestershire, UK
110 m (360 ft)
51°41′40″N 02°01′47″W ﻿ / ﻿ 51.69444°N 2.02972°W

2nd source

Ullenwood, Gloucestershire, UK
214 m (702 ft)
51°50′49″N 02°04′41″W ﻿ / ﻿ 51.84694°N 2.07806°W

River mouth

Thames Estuary, North Sea
Southend-on-Sea, Essex, UK
0 m (0 ft)
51°30′00″N 00°36′36″E ﻿ / ﻿ 51.50000°N 0.61000°E

Length

346 km (215 mi)

Discharge
(location 2)

Discharge
(location 3)

Discharge
(location 4)

Discharge
(location 5)

Basin features

Basin size

12,935 km ² (4,994 sq mi)

The River Thames ( ), known alternatively in parts as the River Isis, is a river that flows through southern England including London. At 215 miles (346 km), it is the longest river entirely in England and the second-longest in the United Kingdom, after the River Severn.

The river rises at Thames Head in Gloucestershire and flows into the North Sea near Tilbury, Essex and Gravesend, Kent, via the Thames Estuary. From the west it flows through Oxford (where it is sometimes called the Isis), Reading, Henley-on-Thames and Windsor. The Thames also drains the whole of Greater London.

Brittonic origin

According to Mallory and Adams, the Thames, from Middle English Temese, is derived from the Brittonic name for the river, Tamesas (from * tamēssa), recorded in Latin as Tamesis and yielding modern Welsh Tafwys "Thames".

The name element Tam may have meant "dark" and can be compared to other cognates such as Russian темно (Proto-Slavic * tĭmĭnŭ), Lithuanian tamsi "dark", Latvian tumsa "darkness", Sanskrit tamas and Welsh tywyll "darkness" and Middle Irish teimen "dark grey".

Kenneth H. Jackson proposed that the name of the Thames is not Indo-European (and of unknown meaning), while Peter Kitson suggested that it is Indo-European but originated before the Britons and has a name indicating "muddiness" from a root *tā-, 'melt'.

Name history

Early variants of the name include:

Indirect evidence for the antiquity of the name "Thames" is provided by a Roman potsherd found at Oxford, bearing the inscription Tamesubugus fecit (Tamesubugus made [this]). It is believed that Tamesubugus' name was derived from that of the river. Tamese was referred to as a place, not a river in the Ravenna Cosmography (c. AD 700).

The river's name has always been pronounced with a simple t /t/; the Middle English spelling was typically Temese and the Brittonic form Tamesis. A similar spelling from 1210, "Tamisiam" (the accusative case of "Tamisia"; see River Thames § Notes), is found in the Magna Carta.

The Thames through Oxford is sometimes called the Isis. Historically, and especially in Victorian times, gazetteers and cartographers insisted that the entire river was correctly named the Isis from its source down to Dorchester on Thames and that only from this point, where the river meets the Thame and becomes the "Thame-isis" (supposedly subsequently abbreviated to Thames) should it be so called. Ordnance Survey maps still label the Thames as "River Thames or Isis" down to Dorchester. Since the early 20th century this distinction has been lost in common usage outside of Oxford, and some historians suggest the name Isis is nothing more than a truncation of Tamesis, the Latin name for the Thames. Sculptures titled Tamesis and Isis by Anne Seymour Damer are located on the bridge at Henley-on-Thames, Oxfordshire (the original terracotta and plaster models were exhibited at the Royal Academy, London, in 1785. They are now on show at the River and Rowing Museum in Henley).

Name legacy

Richard Coates suggests that while the river was as a whole called the Thames, part of it, where it was too wide to ford, was called *(p)lowonida. This gave the name to a settlement on its banks, which became known as Londinium, from the Indo-European roots * pleu- "flow" and *-nedi "river" meaning something like the flowing river or the wide flowing unfordable river.

The lower Thames in the Roman era was a shallow waterway winding through marshes. But centuries of human intervention have transformed it into a deep tidal canal flowing between 200 miles of solid walls; these defend a floodplain where 1.5 million people work and live.

Main page: Embanking of the tidal Thames

A major maritime route is formed for much of its length for shipping and supplies: through the Port of London for international trade, internally along its length and by its connection to the British canal system. The river's position has put it at the centre of many events in British history, leading to it being described by John Burns as "liquid history".

Two broad canals link the river to other rivers: the Kennet and Avon Canal ( Reading to Bath) and the Grand Union Canal (London to the Midlands). The Grand Union effectively bypassed the earlier, narrow and winding Oxford Canal which remains open as a popular scenic recreational route. Three further cross-basin canals are disused but are in various stages of reconstruction: the Thames and Severn Canal (via Stroud), which operated until 1927 (to the west coast of England), the Wey and Arun Canal to Littlehampton, which operated until 1871 (to the south coast), and the Wilts & Berks Canal.

Rowing and sailing clubs are common along the Thames, which is navigable to such vessels. Kayaking and canoeing also take place. Major annual events include the Henley Royal Regatta and the Boat Race, while the Thames has been used during two Summer Olympic Games: 1908 (rowing) and 1948 (rowing and canoeing). Safe headwaters and reaches are a summer venue for organised swimming, which is prohibited on safety grounds in a stretch centred on Central London.

Conversion of marshland

After the river took its present-day course, many of the banks of the Thames Estuary and the Thames Valley in London were partly covered in marshland, as was the adjoining Lower Lea Valley. Streams and rivers like the River Lea, Tyburn Brook and Bollo Brook drained into the river, while some islands, e.g. Thorney Island, formed over the ages. The northern tip of the ancient parish of Lambeth, for example, was marshland known as Lambeth Marshe, but it was drained in the 18th century; the street name Lower Marsh preserves a memory.

Main page: Malaria in the River Thames

Until the middle of the Victorian era malaria was commonplace beside the River Thames, even in London, and was frequently lethal. Some cases continued to occur into the early 20th century. Draining of the marshes had to do with its eradication, but the causes are complex and unclear.

The East End of London, also known simply as the East End, was the area of London east of the medieval walled City of London and north of the River Thames, although it is not defined by universally accepted formal boundaries; the River Lea can be considered another boundary. Most of the local riverside was also marshland. The land was drained and became farmland; it was built on after the Industrial Revolution.

Canvey Island in southern Essex (area 18.45 km ², 7.12 sq mi; population 40,000) was once marshy, but is now a fully reclaimed island in the Thames estuary, separated from the mainland of south Essex by a network of creeks. Lying below sea level, it is prone to flooding at exceptional tides, but has nevertheless been inhabited since Roman times.

The usually quoted source of the Thames is at Thames Head (at ). This is about mi (1.2 km) north of Kemble parish church in southern Gloucestershire, near the town of Cirencester, in the Cotswolds. However, Seven Springs near Cheltenham, where the Churn (which feeds into the Thames near Cricklade) rises, is also sometimes quoted as the Thames' source, as this location is farthest from the mouth and adds some 14 mi (23 km) to the river's length. At Seven Springs above the source is a stone with the Latin hexameter inscription "Hic tuus o Tamesine pater septemgeminus fons", which means "Here, O Father Thames, [is] your sevenfold source".

The sea level in the Thames estuary is rising and the rate of rise is increasing.

Sediment cores up to 10 m deep collected by the British Geological Survey from the banks of the tidal River Thames contain geochemical information and fossils which provide a 10,000-year record of sea-level change. Combined, this and other studies suggest that the Thames sea-level has risen more than 30 m during the Holocene at a rate of around 5-6 mm per year from 10,000 to 6,000 years ago. The rise of sea level dramatically reduced when the ice melt nearly concluded over the past 4,000 years. Since the beginning of the 20th century, rates of sea level rise range from 1.22 mm per year to 2.14 mm per year.

Catchment area and discharge

The Thames River Basin District, including the Medway catchment, covers an area of 6,229 sq mi (16,130 km ²). The entire river basin is a mixture of urban and rural, with rural landscape predominating in the western part. The area is among the driest in the United Kingdom. Water resources consist of groundwater from aquifers and water taken from the Thames and its tributaries, much of it stored in large bank-side reservoirs.

The Thames itself provides two-thirds of London's drinking water, while groundwater supplies about 40 per cent of public water supplies in the overall catchment area. Groundwater is an important water source, especially in the drier months, so maintaining its quality and quantity is extremely important. Groundwater is vulnerable to surface pollution, especially in highly urbanised areas.

Non-tidal section

Brooks, canals and rivers, within an area of 3,842 sq mi (9,951 km ²), combine to form 38 main tributaries feeding the Thames between its source and Teddington Lock. This is the usual tidal limit; however, high spring tides can raise the head water level in the reach above Teddington and can occasionally reverse the river flow for a short time. In these circumstances, tidal effects can be observed upstream to the next lock beside Molesey weir, which is visible from the towpath and bridge beside Hampton Court Palace. Before Teddington Lock was built in 1810-12, the river was tidal at peak spring tides as far as Staines upon Thames.

Its longest artificial secondary channel (cut), the Jubilee River, was built between Maidenhead and Windsor for flood relief and completed in 2002.

The non-tidal section of the river is managed by the Environment Agency, which is responsible for managing the flow of water to help prevent and mitigate flooding, and providing for navigation: the volume and speed of water downstream is managed by adjusting the sluices at each of the weirs and, at peak high water, levels are generally dissipated over preferred flood plains adjacent to the river. Occasionally, flooding of inhabited areas is unavoidable and the agency issues flood warnings. Due to stiff penalties applicable on the non-tidal river, which is a drinking water source before treatment, sanitary sewer overflow from the many sewage treatment plants covering the upper Thames basin should be rare in the non-tidal Thames. However, storm sewage overflows are still common in almost all the main tributaries of the Thames despite claims by Thames Water to the contrary.

Tidal section

The principal tributaries of the River Thames on the Tideway include the rivers Crane, Brent, Wandle, Ravensbourne (the final part of which is called Deptford Creek), Lea (the final part of which is called Bow Creek), Roding (Barking Creek), Darent and Ingrebourne. In London, the water is slightly brackish with sea salt, being a mix of sea and fresh water.

This part of the river is managed by the Port of London Authority. The flood threat here comes from high tides and strong winds from the North Sea, and the Thames Barrier was built in the 1980s to protect London from this risk.

In the Oxford area the river splits into several streams across the floodplain (Seacourt Stream, Castle Mill Stream, Bulstake Stream and others), creating several islands ( Fiddler's Island, Osney and others). Desborough Island, Ham Island at Old Windsor and Penton Hook Island were artificially created by lock cuts and navigation channels. Chiswick Eyot is a landmark on the Boat Race course, while Glover's Island forms the centre of a view from Richmond Hill.

Islands of historical interest include Magna Carta Island at Runnymede, Fry's Island at Reading, and Pharaoh's Island near Shepperton. In more recent times Platts Eyot at Hampton was the place where Motor Torpedo Boats (MTB)s were built, Tagg's Island near Molesey was associated with the impresario Fred Karno and Eel Pie Island at Twickenham was the birthplace of the South East's R&B music scene.

At this time the river-system headwaters lay in the English West Midlands and may, at times, have received drainage from the Berwyn Mountains in North Wales.

It dammed the river in Hertfordshire, resulting in the formation of large ice lakes, which eventually burst their banks and caused the river to divert onto its present course through the area of present-day London.

At the height of the last ice age, around 20,000 BC, Britain was connected to mainland Europe by a large expanse of land known as Doggerland in the southern North Sea Basin. At this time, the Thames' course did not continue to Doggerland but flowed southwards from the eastern Essex coast where it met the waters of the proto-Rhine-Meuse-Scheldt delta flowing from what are now the Netherlands and Belgium. These rivers formed a single river - the Channel River ( Fleuve Manche) - that passed through the Dover Strait and drained into the Atlantic Ocean in the western English Channel.

Upon the valley sides of the Thames and some of its tributaries can be seen other terraces of brickearth, laid over and sometimes interlayered with the clays. These deposits were brought in by the winds during the periglacial periods, suggesting that wide, flat marshes were then part of the landscape, which the new rivers proceeded to cut into.

The steepness of some valley sides indicates very much lower mean sea levels caused by the glaciation locking up so much water upon the land masses, thus causing the river water to flow rapidly seaward and so erode its bed quickly downwards.

The original land surface was around 350 to 400 feet (110 to 120 metres) above the current sea-level. The surface had sandy deposits from an ancient sea, laid over sedimentary clay (this is the blue London Clay). All the erosion down from this higher land surface, and the sorting action by these changes of water flow and direction, formed what is known as the Thames River Gravel Terraces.

Since Roman times and perhaps earlier, the isostatic rebound from the weight of previous ice sheets, and its interplay with the eustatic change in sea level, have resulted in the old valley of the River Brent, together with that of the Thames, silting up again. Thus, along much of the Brent's present-day course, one can make out the water-meadows of rich alluvium, which is augmented by frequent floods.

Non-native geese that can be seen include Canada geese, Egyptian geese and bar-headed geese, and ducks include the familiar native mallard, plus introduced Mandarin duck and wood duck. Other water birds to be found on the Thames include the great crested grebe, coot, moorhen, heron and kingfisher. Many types of British birds also live alongside the river, although they are not specific to the river habitat.

The Thames contains both sea water and fresh water, thus providing support for seawater and freshwater fish. However, many populations of fish are at risk and are being killed in tens of thousands because of pollutants leaking into the river from human activities. Salmon, which inhabit both environments, have been reintroduced and a succession of fish ladders have been built into weirs to enable them to travel upstream.

On 5 August 1993, the largest non-tidal salmon in recorded history was caught close to Boulters Lock in Maidenhead. The specimen weighed lb (6.6 kg) and measured 22 in (56 cm) in length. The eel is particularly associated with the Thames and there were formerly many eel traps. Freshwater fish of the Thames and its tributaries include brown trout, chub, dace, roach, barbel, perch, pike, bleak and flounder. Colonies of short-snouted seahorses as well as tope and starry smooth-hound sharks have also recently been discovered in the river. The Thames is also host to some invasive crustaceans, including the signal crayfish and the Chinese mitten crab.

Aquatic mammals are also known to inhabit the Thames. The population of grey and harbour seals numbers up to 700 in the Thames Estuary. These animals have been sighted as far upriver as Richmond. Bottlenose dolphins and harbour porpoises are also sighted in the Thames.

On 20 January 2006, a 16-18 ft (4.9-5.5 m) northern bottle-nosed whale was seen in the Thames as far upstream as Chelsea. This was extremely unusual: this whale is generally found in deep sea waters. Crowds gathered along the riverbanks to witness the spectacle but there was soon concern, as the animal came within yards of the banks, almost beaching, and crashed into an empty boat causing slight bleeding. About 12 hours later, the whale is believed to have been seen again near Greenwich, possibly heading back to sea. A rescue attempt lasted several hours, but the whale died on a barge. See River Thames whale.

Human history

The River Thames has played several roles in human history: as an economic resource, a maritime route, a boundary, a fresh water source, a source of food and more recently a leisure facility. In 1929, John Burns, one-time MP for Battersea, responded to an American's unfavourable comparison of the Thames with the Mississippi by coining the expression "The Thames is liquid history".

So extensive have the changes to this landscape been that what little evidence there is of man's presence before the ice came has inevitably shown signs of transportation here by water and reveals nothing specifically local. Likewise, later evidence of occupation, even since the arrival of the Romans, may lie next to the original banks of the Brent but have been buried under centuries of silt.

Roman Britain

Some of the earliest written references to the Thames ( Latin: Tamesis) occur in Julius Caesar's account of his second expedition to Britain in 54 BC, when the Thames presented a major obstacle and he encountered the Iron Age Belgic tribes ( Catuvellauni and Atrebates) along the river. At the confluence of the Thames and Cherwell was the site of early settlements and the River Cherwell marked the boundary between the Dobunni tribe to the west and the Catuvellauni to the east (these were pre-Roman Celtic tribes). In the late 1980s a large Romano-British settlement was excavated on the edge of the village of Ashton Keynes in Wiltshire.

Middle Ages

A Romano-British settlement grew up north of the confluence, partly because the site was naturally protected from attack on the east side by the River Cherwell and on the west by the River Thames. This settlement dominated the pottery trade in what is now central southern England, and pottery was distributed by boats on the Thames and its tributaries.

Another major consequence of John's reign was the completion of the multi-piered London Bridge, which acted as a barricade and barrage on the river, affecting the tidal flow upstream and increasing the likelihood of the river freezing over. In Tudor and Stuart times, various kings and queens built magnificent riverside palaces at Hampton Court, Kew, Richmond on Thames, Whitehall and Greenwich.

As early as the 1300s, the Thames was used to dispose of waste matter produced in the city of London, thus turning the river into an open sewer. In 1357, Edward III described the state of the river in a proclamation: "... dung and other filth had accumulated in divers places upon the banks of the river with ... fumes and other abominable stenches arising therefrom."

The growth of the population of London greatly increased the amount of waste that entered the river, including human excrement, animal waste from slaughter houses, and waste from manufacturing processes. According to historian Peter Ackroyd, "a public lavatory on London Bridge showered its contents directly onto the river below, and latrines were built over all the tributaries that issued into the Thames."

Early modern period

During a series of cold winters the Thames froze over above London Bridge: in the first Frost Fair in 1607, a tent city was set up on the river, along with a number of amusements, including ice bowling.

Throughout early modern history the population of London and its industries discarded their rubbish in the river. This included the waste from slaughterhouses, fish markets, and tanneries. The buildup in household cesspools could sometimes overflow, especially when it rained, and was washed into London's streets and sewers which eventually led to the Thames. In the late 18th and 19th centuries people known as mudlarks scavenged in the river mud for a meagre living.

Victorian era

There followed a concerted effort to contain the city's sewage by constructing massive sewer systems on the north and south river embankments, under the supervision of engineer Joseph Bazalgette. Meanwhile, there were similar huge projects to ensure the water supply: reservoirs and pumping stations were built on the river to the west of London, slowly helping the quality of water to improve.

The Victorian era was one of imaginative engineering. The coming of the railways added railway bridges to the earlier road bridges and also reduced commercial activity on the river. However, sporting and leisure use increased with the establishment of regattas such as Henley and the Boat Race. One of the worst river disasters in England was on 3 September 1878, when the crowded pleasure boat Princess Alice collided with the Bywell Castle, killing over 640 people.

20th century

In the post-war era, although the Port of London remains one of the UK's three main ports, most trade has moved downstream from central London. In the late 1950s, the discharge of methane gas in the depths of the river caused the water to bubble, and the toxins wore away at boats' propellers.

The decline of heavy industry and tanneries, reduced use of oil-pollutants and improved sewage treatment have led to much better water quality compared to the late 19th and early- to mid-20th centuries and aquatic life has returned to its formerly 'dead' stretches.

Alongside the entire river runs the Thames Path, a National Route for walkers and cyclists.

In the early 1980s a pioneering flood control device, the Thames Barrier, was opened. It is closed to tides several times a year to prevent water damage to London's low-lying areas upstream (the 1928 Thames flood demonstrated the severity of this type of event).

21st century

In 2010, the Thames won the largest environmental award in the world: the $350,000 International Riverprize.

In August 2022, the first few miles of the river dried up due to the previous month's heatwave, and the source of the river temporarily moved five miles to beyond Somerford Keynes.

The active river

In the past, commercial activities on the Thames included fishing (particularly eel trapping), coppicing willows and osiers which provided wood and baskets, and the operation of watermills for flour and paper production and metal beating. These activities have largely disappeared.

The Thames is popular for a wide variety of riverside housing, including high-rise flats in central London and chalets on the banks and islands upstream. Some people live in houseboats, typically around Brentford and Tagg's Island.

Transport and tourism

Tidal river

Main page: London River Services

Upper river

The leisure navigation and sporting activities on the river have given rise to a number of businesses including boatbuilding, marinas, ships chandlers and salvage services.

In summer, passenger services operate along the entire non-tidal river from Oxford to Teddington. The two largest operators are Salters Steamers and French Brothers. Salters operate services between Folly Bridge, Oxford and Staines. The whole journey takes four days and requires several changes of boat. French Brothers operate passenger services between Maidenhead and Hampton Court. Along the course of the river a number of smaller private companies also offer river trips at Oxford, Wallingford, Reading and Hampton Court. Many companies also provide boat hire on the river.

Police and lifeboats

The river is policed by five police forces. The Thames Division is the River Police arm of London's Metropolitan Police, while Surrey Police, Thames Valley Police, Essex Police and Kent Police have responsibilities on their parts of the river outside the metropolitan area. There is also a London Fire Brigade fire boat on the river. The river claims a number of lives each year.

The Thames is maintained for navigation by powered craft from the estuary as far as Lechlade in Gloucestershire and for very small craft to Cricklade. The original towpath extends upstream from Putney Bridge as far as the connection with the now disused Thames and Severn Canal at Inglesham, one and a half miles upstream of the last boat lock near Lechlade. From Teddington Lock to the head of navigation, the navigation authority is the Environment Agency. Between the sea and Teddington Lock, the river forms part of the Port of London and navigation is administered by the Port of London Authority. Both the tidal river through London and the non-tidal river upstream are intensively used for leisure navigation.

The tidal river is navigable to large ocean-going ships as far upstream as the Pool of London and London Bridge. Although London's upstream enclosed docks have closed and central London sees only the occasional visiting cruise ship or warship, the tidal river remains one of Britain's main ports. Around 60 active terminals cater for shipping of all types including ro-ro ferries, cruise liners and vessels carrying containers, vehicles, timber, grain, paper, crude oil, petroleum products, liquified petroleum gas etc. There is a regular traffic of aggregate or refuse vessels, operating from wharves in the west of London. The tidal Thames links to the canal network at the River Lea Navigation, the Regent's Canal at Limehouse Basin and the Grand Union Canal at Brentford.

Upstream of Wandsworth Bridge a speed limit of 8 kn (15 km/h) is in force for powered craft to protect the riverbank environment and to provide safe conditions for rowers and other river users. There is no absolute speed limit on most of the Tideway downstream of Wandsworth Bridge, although boats are not allowed to create undue wash. Powered boats are limited to 12 knots between Lambeth Bridge and downstream of Tower Bridge, with some exceptions. Boats can be approved by the harbour master to travel at speeds of up to 30 knots from below Tower Bridge to past the Thames Barrier.

Management

The administrative powers of the Thames Conservancy to control river traffic and manage flows have been taken on with some modifications by the Environment Agency and, in respect of the Tideway part of the river, such powers are split between the agency and the Port of London Authority.

In the Middle Ages the Crown exercised general jurisdiction over the Thames, one of the four royal rivers, and appointed water bailiffs to oversee the river upstream of Staines. The City of London exercised jurisdiction over the tidal Thames. However, navigation was increasingly impeded by weirs and mills, and in the 14th century the river probably ceased to be navigable for heavy traffic between Henley and Oxford. In the late 16th century the river seems to have been reopened for navigation from Henley to Burcot.

The first commission concerned with the management of the river was the Oxford-Burcot Commission, formed in 1605 to make the river navigable between Burcot and Oxford.

In 1751 the Thames Navigation Commission was formed to manage the whole non-tidal river above Staines. The City of London long claimed responsibility for the tidal river. A long running dispute between the City and the Crown over ownership of the river was not settled until 1857, when the Thames Conservancy was formed to manage the river from Staines downstream. In 1866 the functions of the Thames Navigation Commission were transferred to the Thames Conservancy, which thus had responsibility for the whole river.

In 1909 the powers of the Thames Conservancy over the tidal river, below Teddington, were transferred to the Port of London Authority.

In 1974 the Thames Conservancy became part of the new Thames Water Authority. When Thames Water was privatised in 1990, its river management functions were transferred to the National Rivers Authority, in 1996 subsumed into the Environment Agency.

In 2010, the Thames won the world's largest environmental award at the time, the $350,000 International Riverprize, presented at the International Riversymposium in Perth, WA in recognition of the substantial and sustained restoration of the river by many hundreds of organisations and individuals since the 1950s.

As a boundary

Until enough crossings were established, the river presented a formidable barrier, with Belgic tribes and Anglo-Saxon kingdoms being defined by which side of the river they were on. When English counties were established their boundaries were partly determined by the Thames. On the northern bank were the ancient counties of Gloucestershire, Oxfordshire, Buckinghamshire, Middlesex and Essex. On the southern bank were the counties of Wiltshire, Berkshire, Surrey and Kent.

Many of the present-day road bridges are on the site of earlier fords, ferries and wooden bridges. Swinford Bridge, known as the five pence toll bridge, replaced a ferry that in turn replaced a ford. The earliest known major crossings of the Thames by the Romans were at London Bridge and Staines Bridge. At Folly Bridge in Oxford the remains of an original Saxon structure can be seen, and medieval stone bridges such as Newbridge, Wallingford Bridge and Abingdon Bridge are still in use.

Kingston's growth is believed to stem from its having the only crossing between London Bridge and Staines until the beginning of the 18th century. During the 18th century, many stone and brick road bridges were built from new or to replace existing bridges both in London and along the length of the river. These included Putney Bridge, Westminster Bridge, Datchet Bridge, Windsor Bridge and Sonning Bridge.

Several central London road bridges were built in the 19th century, most conspicuously Tower Bridge, the only Bascule bridge on the river, designed to allow ocean-going ships to pass beneath it. The most recent road bridges are the bypasses at Isis Bridge and Marlow By-pass Bridge and the motorway bridges, most notably the two on the M25 route: Queen Elizabeth II Bridge and M25 Runnymede Bridge.

Railway development in the 19th century resulted in a spate of bridge building including Blackfriars Railway Bridge and Charing Cross (Hungerford) Railway Bridge in central London, and the railway bridges by Isambard Kingdom Brunel at Maidenhead Railway Bridge, Gatehampton Railway Bridge and Moulsford Railway Bridge.

Many foot crossings were established across the weirs that were built on the non-tidal river, and some of these remained when the locks were built - for example at Benson Lock. Others were replaced by a footbridge when the weir was removed as at Hart's Weir Footbridge. Around 2000, several footbridges were added along the Thames, either as part of the Thames Path or in commemoration of the millennium. These include Temple Footbridge, Bloomers Hole Footbridge, the Hungerford Footbridges and the Millennium Bridge, all of which have distinctive design characteristics.

Before bridges were built, the main means of crossing the river was by ferry. A significant number of ferries were provided specifically for navigation purposes. When the towpath changed sides, it was necessary to take the towing horse and its driver across the river. This was no longer necessary when barges were powered by steam. Some ferries still operate on the river. The Woolwich Ferry carries cars and passengers across the river in the Thames Gateway and links the North Circular and South Circular roads. Upstream are smaller pedestrian ferries, for example Hampton Ferry and Shepperton to Weybridge Ferry, the last being the only non-permanent crossing that remains on the Thames Path.

Hydro-power

Whilst the use of the river to drive water-mills has largely died out, there has been a recent trend to use the head of water provided by the river's existing weirs to drive small hydro-electric power plants, using Archimedes screw turbines. Operational schemes include:

Treated and untreated sewage

Treated waste water from all the towns and villages in the Thames catchment flow into the Thames via sewage treatment plants. This includes all that from Swindon, Oxford, Berkshire and almost all of Surrey.

However, untreated sewage still often enters the Thames during wet weather. When London's sewerage system was built, sewers were designed to overflow through discharge points along the river during heavy storms. Originally, this would happen once or twice a year, however overflows now happen once a week on average. In 2013, over 55 m tonnes of dilute raw sewage overflowed into the tidal Thames. These discharge events kill fish, leave raw sewage on the riverbanks, and decrease the water quality of the river. A 2022 investigation by the Environment Agency found "widespread and serious non-compliance with the relevant regulations". Thames Water has also published an interactive map showing discharges as they happen.

To reduce the release of this into the river, the Thames Tideway Scheme is currently under construction at a cost of £4.2 billion. This project will collect sewage from the Greater London area before it overflows, before channelling it down a 25 km (15 mi) tunnel underneath the tidal Thames, so that it can be treated at Beckton Sewage Treatment Works. The project is planned to reduce sewage discharges into the Thames in the Greater London area by 90%, dramatically increasing water quality. After its completion, it is estimated that two million tonnes of sewage will still enter the Thames each year.

Mercury levels

The most sedimentary-hosted Hg pollution in the Thames estuary occurs in the central London area between Vauxhall Bridge and Woolwich. The majority of sediment cores show a clear decrease in Hg concentrations close to the surface, which is attributed to an overall reduction in polluting activities as well as improved effectiveness of recent environmental legalisation and river management (e.g. Oslo-Paris convention).

Plastic pollution

The Thames has relatively high levels of plastic pollution, with an estimated 94,000 microplastics per second moving through some parts of the river. These microplastics come from the breakdown of larger items but also glitter and microbeads from cosmetics.

One study found one-fifth of macroplastics found in the river were from food packaging.

There are several watersports prevalent on the Thames, with many clubs encouraging participation and organising racing and inter-club competitions.

Main page: Rowing on the River Thames

Two rowing events on the River Thames are traditionally part of the wider English sporting calendar:

Henley Royal Regatta takes place over five days at the start of July in the upstream town of Henley-on-Thames. Besides its sporting significance the regatta is an important date on the English social calendar alongside events like Royal Ascot and Wimbledon.

Other significant or historic rowing events on the Thames include:

The Head of the River Race and Women's Eights Head of the River Race (8+) (i.e. coxed eights), Schools' Head, Veterans Head, Scullers Head, Fours Head (HOR4s), and Pairs Head (shorter) on the Championship Course

The Wingfield Sculls on the same course: (1x) (single sculling) championship

Doggett's Coat and Badge for apprentice watermen of London, one of the oldest sporting events in the world

Henley Women's Regatta

The Henley Boat Races currently for the Lightweight (men's and women's) crews of Oxford and Cambridge universities

The Oxford University bumping races known as Eights Week and Torpids

Other regattas, head races and university bumping races are held along the Thames which are described under Rowing on the River Thames.

Main page: Sailing on the River Thames

Sailing is practised on both the tidal and non-tidal reaches of the river. The highest club upstream is at Oxford. The most popular sailing craft used on the Thames are lasers, GP14s and Wayfarers. One sailing boat unique to the Thames is the Thames Rater, which is sailed around Raven's Ait.

Skiffing has dwindled in favour of private motor boat ownership but is competed on the river in the summer months. Six clubs and a similar number of skiff regattas exist from the Skiff Club, Teddington upstream.

Kayaking and canoeing

Main page: Kayaking and canoeing on the River Thames

In 2006, British swimmer and environmental campaigner Lewis Pugh became the first person to swim the full length of the Thames from outside Kemble to Southend-on-Sea to draw attention to the severe drought in England which saw record temperatures indicative of a degree of global warming. The 202 mi (325 km) swim took him 21 days to complete. The official headwater of the river had stopped flowing due to the drought, forcing Pugh to run the first 26 mi (42 km).

Organised swimming events take place at various points generally upstream of Hampton Court, including Windsor, Marlow and Henley. In 2011, comedian David Walliams swam the 140 mi (230 km) from Lechlade to Westminster Bridge and raised over £1 million for charity.

In non-tidal stretches swimming was, and still is, a leisure and fitness activity among experienced swimmers where safe, deeper outer channels are used in times of low stream.

A Thames meander is a long-distance journey over all or part of the Thames by running, swimming or using any of the above means. It is often carried out as an athletic challenge in a competition or for a record attempt.

The Thames in the arts

Visual arts

John Kaufman's sculpture The Diver: Regeneration is sited in the Thames near Rainham.

The river and bridges are portrayed as being destroyed - together with much of London - in the film Independence Day 2.

Literature

The Thames is mentioned in many works of literature including novels, diaries and poetry. It is the central theme in three in particular:

Three Men in a Boat by Jerome K. Jerome, first published in 1889, is a humorous account of a boating holiday on the Thames between Kingston and Oxford. The book was intended initially to be a serious travel guide, with accounts of local history of places along the route, but the humorous elements eventually took over. The landscape and features of the Thames as described by Jerome are virtually unchanged, and the book's enduring popularity has meant that it has never been out of print since it was first published.

Charles Dickens' Our Mutual Friend (written in the years 1864-65) describes the river in a grimmer light. It begins with a scavenger and his daughter pulling a dead man from the river near London Bridge, to salvage what the body might have in its pockets, and leads to its conclusion with the deaths of the villains drowned in Plashwater Lock upstream. The workings of the river and the influence of the tides are described with great accuracy. Dickens opens the novel with this sketch of the river, and the people who work on it:

In these times of ours, though concerning the exact year there is no need to be precise, a boat of dirty and disreputable appearance, with two figures in it, floated on the Thames, between Southwark Bridge which is of iron, and London Bridge which is of stone, as an autumn evening was closing in. The figures in this boat were those of a strong man with ragged grizzled hair and a sun-browned face, and a girl of nineteen or twenty. The girl rowed, pulling a pair of sculls very easily; the man with the rudder-lines slack in his hands, and his hands loose in his waisteband, kept an eager look-out.

Kenneth Grahame's The Wind in the Willows, written in 1908, is set in the middle to upper reaches of the river. It starts as a tale of anthropomorphic characters "simply messing about in boats" but develops into a more complex story combining elements of mysticism with adventure and reflection on Edwardian society. It is generally considered one of the most beloved works of children's literature and the illustrations by E.H.Shepard and Arthur Rackham feature the Thames and its surroundings.

The river almost inevitably features in many books set in London. Most of Dickens' other novels include some aspect of the Thames. Oliver Twist finishes in the slums and rookeries along its south bank. The Sherlock Holmes stories by Arthur Conan Doyle often visit riverside parts as in The Sign of Four. In Heart of Darkness by Joseph Conrad, the serenity of the contemporary Thames is contrasted with the savagery of the Congo River, and with the wilderness of the Thames as it would have appeared to a Roman soldier posted to Britannia two thousand years before. Conrad also gives a description of the approach to London from the Thames Estuary in his essays The Mirror of the Sea (1906). Upriver, Henry James' Portrait of a Lady uses a large riverside mansion on the Thames as one of its key settings.

Literary non-fiction works include Samuel Pepys' diary, in which he recorded many events relating to the Thames including the Fire of London. He was disturbed while writing it in June 1667 by the sound of gunfire as Dutch warships broke through the Royal Navy on the Thames.

In poetry, William Wordsworth's sonnet On Westminster Bridge closes with the lines:

Ne'er saw I, never felt, a calm so deep!

The river glideth at his own sweet will:

Dear God! the very houses seem asleep;

And all that mighty heart is lying still!

T. S. Eliot makes several references to the Thames in The Fire Sermon, Section III of The Waste Land.

The Sweet Thames line is taken from Edmund Spenser's Prothalamion which presents a more idyllic image:

Along the shoare of silver streaming Themmes;

Whose rutty banke, the which his river hemmes,

Was paynted all with variable flowers.

And all the meads adorn'd with daintie gemmes

Fit to deck maydens bowres

Also writing of the upper reaches is Matthew Arnold in The Scholar Gypsy:

Crossing the stripling Thames at Bab-lock-hythe

Trailing in the cool stream thy fingers wet

As the slow punt swings round

Oh born in days when wits were fresh and clear

And life ran gaily as the sparkling Thames;

Before this strange disease of modern life.

Wendy Cope's poem 'After the Lunch' is set on Waterloo Bridge, beginning:

On Waterloo Bridge, where we said our goodbyes,

The weather conditions bring tears to my eyes.

I wipe them away with a black woolly glove,

And try not to notice I've fallen in love.

Dylan Thomas mentions the Thames in his poem "A Refusal to Mourn the Death, by Fire, of a Child in London". "London's Daughter", the subject of the poem, lays "Deep with the first dead...secret by the unmourning water of the riding Thames".

Science-fiction novels make liberal use of a futuristic Thames. The utopian News from Nowhere by William Morris is mainly the account of a journey through the Thames valley in a socialist future. The Thames features in H. G. Wells' The War of the Worlds. The Thames also features prominently in Philip Pullman's His Dark Materials trilogy, as a communications artery for the waterborne Gyptian people of Oxford and the Fens, and as a prominent setting for his novel La Belle Sauvage.

In The Deptford Mice trilogy by Robin Jarvis, the Thames appears several times. In one book, rat characters swim through it to Deptford. Winner of the Nestlé Children's Book Prize Gold Award I, Coriander, by Sally Gardner is a fantasy novel in which the heroine lives on the banks of the Thames. Mark Wallington describes a journey up the Thames in a camping skiff, in his 1989 book Boogie up the River.

Many of the principal characters of the Rivers of London urban fantasy series by Ben Aaronovitch are genii locorum (local gods) associated with River Thames and its tributaries. This includes Father Thames, the original god of the Thames but now (in the books) confined to non-tidal reaches above Teddington Lock and Mama Thames the goddess of the tidal Thames below Teddington.

The song 'Old Father Thames' was recorded by Peter Dawson at Abbey Road Studios in 1933 and by Gracie Fields five years later. Jessie Matthews sings "My river" in the 1938 film Sailing Along, and the tune is the centrepiece of a major dance number near the end of the film.

The Sex Pistols played a concert on the Queen Elizabeth Riverboat on 7 June 1977, Queen Elizabeth II's Silver Jubilee year, while sailing down the river. The choral line "(I) (liaised) live by the river" in the song "London Calling" by the Clash refers to the River Thames.

Major flood events

London flood of 1928

Main page: 1928 Thames flood

Thames Valley flood of 1947

Main page: 1947 Thames flood

The 1947 Thames flood was overall the worst 20th-century flood of the River Thames, affecting much of the Thames Valley as well as elsewhere in England during the middle of March 1947 after a very severe winter.

The floods were caused by 4.6 in (120 mm) of rainfall (including snow); the peak flow was 61.7 billion litres (13.6 billion imperial gallons) of water per day and the damage cost a total of £12 million to repair. War damage to some of the locks made matters worse.

Other significant Thames floods since 1947 have occurred in 1968, 1993, 1998, 2000, 2003, 2006 and 2014.

Canvey Island flood of 1953

On the night of 31 January, the North Sea flood of 1953 devastated the island, taking the lives of 58 islanders and forcing the temporary evacuation of the 13,000 residents. Canvey is consequently protected by modern sea defences comprising 15 mi (24 km) of concrete seawall. Many of the victims were in the holiday bungalows of the eastern Newlands estate and perished as the water reached ceiling level. The small village area of the island is approximately two foot (0.6 m) above sea level and consequently escaped the effects of the flood.

In Spanish: Río Támesis para niños

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Mississippi River

Country
United States

State

Minnesota, Wisconsin, Iowa, Illinois, Missouri, Kentucky, Tennessee, Arkansas, Mississippi, Louisiana

Cities

Saint Cloud, MN, Minneapolis, MN, St. Paul, MN, La Crosse, WI, Quad Cities, IA/IL, St. Louis, MO, Memphis, TN, Greenville, MS, Vicksburg, MS, Baton Rouge, LA, New Orleans, LA

Physical characteristics

Main source

Lake Itasca (traditional)
Itasca State Park, Clearwater County, MN
1,475 ft (450 m)
47°14′23″N 95°12′27″W ﻿ / ﻿ 47.23972°N 95.20750°W

River mouth

Gulf of Mexico
Pilottown, Plaquemines Parish, LA
0 ft (0 m)
29°09′04″N 89°15′12″W ﻿ / ﻿ 29.15111°N 89.25333°W

Length

2,340 mi (3,770 km)

Discharge
(location 2)

Discharge
(location 3)

Basin features

Basin size

1,151,000 sq mi (2,980,000 km ²)

Tributaries

The Mississippi River is the second-longest river and chief river of the second-largest drainage system on the North American continent, second only to the Hudson Bay drainage system. From its traditional source of Lake Itasca in northern Minnesota, it flows generally south for 2,340 miles (3,770 km) to the Mississippi River Delta in the Gulf of Mexico. With its many tributaries, the Mississippi's watershed drains all or parts of 32 U.S. states and two Canadian provinces between the Rocky and Appalachian mountains. The main stem is entirely within the United States; the total drainage basin is 1,151,000 sq mi (2,980,000 km ²), of which only about one percent is in Canada. The Mississippi ranks as the thirteenth-largest river by discharge in the world. The river either borders or passes through the states of Minnesota, Wisconsin, Iowa, Illinois, Missouri, Kentucky, Tennessee, Arkansas, Mississippi, and Louisiana.

Native Americans have lived along the Mississippi River and its tributaries for thousands of years. Most were hunter-gatherers, but some, such as the Mound Builders, formed prolific agricultural and urban civilizations. The arrival of Europeans in the 16th century changed the native way of life as first explorers, then settlers, ventured into the basin in increasing numbers. The river served first as a barrier, forming borders for New Spain, New France, and the early United States, and then as a vital transportation artery and communications link. In the 19th century, during the height of the ideology of manifest destiny, the Mississippi and several western tributaries, most notably the Missouri, formed pathways for the western expansion of the United States.

Formed from thick layers of the river's silt deposits, the Mississippi embayment is one of the most fertile regions of the United States; steamboats were widely used in the 19th and early 20th centuries to ship agricultural and industrial goods. During the American Civil War, the Mississippi's capture by Union forces marked a turning point towards victory, due to the river's strategic importance to the Confederate war effort. Because of the substantial growth of cities and the larger ships and barges that replaced steamboats, the first decades of the 20th century saw the construction of massive engineering works such as levees, locks and dams, often built in combination. A major focus of this work has been to prevent the lower Mississippi from shifting into the channel of the Atchafalaya River and bypassing New Orleans.

Since the 20th century, the Mississippi River has also experienced major pollution and environmental problems - most notably elevated nutrient and chemical levels from agricultural runoff, the primary contributor to the Gulf of Mexico dead zone.

Transportation

The Mississippi has been very important for transportation in the history of the United States. In the 1800s, many steamboats traveled on the Mississippi River. St. Louis, Missouri, Memphis, Tennessee, and New Orleans were important port cities.

Tributaries

The Mississippi has many large tributaries, or rivers that flow into it. The watershed of the Mississippi covers much of the United States. This means that the Mississippi and its tributaries drain much of the United States.

Some important tributaries of the Mississippi are (listed from the source to the mouth of the river):

The Mississippi River in books

A big part of the book Huckleberry Finn by Mark Twain is set on the Mississippi River. Twain also wrote a book called Life on the Mississippi, which had some stories about how he used to work on a steamboat.

Images for kids

Discovery of the Mississippi by De Soto A.D. 1541 by William Henry Powell depicts Hernando de Soto and Spanish Conquistadores seeing the Mississippi River for the first time.

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Mississippi River Country United States State Minnesota, Wisconsin, Iowa, Illinois, Missouri, Kentucky, Tennessee, Arkansas, Mississippi, Louisiana Cities Saint Cloud, MN, Minneapolis, MN, St. Paul, MN, La Crosse, WI, Quad Cities, IA/IL, St.

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Silver Price in EUR per Troy Ounce for Last Week

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Silver Price in EUR per Troy Ounce for Last Week

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Aconcagua is the highest mountain in the Americas, and the highest outside Asia. The altitude is 6,962 meters, or 22,841 feet. It is one of the Seven Summits.

It is the Andes, in the Argentine province of Mendoza.

Images for kids

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Aconcagua is the highest mountain in the Americas, and the highest outside Asia. The altitude is 6,962 meters, or 22,841 feet. It is one of the Seven Summits. It is the Andes, in the Argentine province of Mendoza.

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Mount Fuji (富士山, Fuji-san) is the tallest mountain in Japan, at 3,776 metres (12,388 ft) high. It is also a volcano. It is on the border between Shizuoka Prefecture and Yamanashi Prefecture. Mount Fuji is a famous cultural icon of Japan, as a lot of people have painted it and taken photographs of it. It became the 13th UNESCO World Heritage Site in Japan on June 22, 2013. The last time it erupted was from 1707 to 1708.

Active volcano

Mount Fuji is officially classified as an active volcano, but some describe Fuji as dormant or inactive.

The last major event was the Hōei eruption of Mount Fuji which started on December 16, 1707 (Hōei 4, 23rd day of the 11th month) and ended about January 1, 1708 ( Hōei 4, 9th day of the 12th month) during the Edo period. Cinders and ash from Fuji fell like rain in Izu Province, Kai Province, Sagami Province, and Musashi Province.

The mountain is thought to be named after Fuchi, the Buddhist fire goddess. The mountain is sacred in the Shinto religion and at the bottom of the mountain are shrines to the goddess Konohananosakuya-hime (コノハナノサクヤヒメ）).

Many people climb Mt. Fuji every year. The official climbing season is in the summer: July 25 to August 25. There are three mountain-climbing routes on the Shizuoka side of Mt. Fuji. There is a post office on the top of Mt. Fuji which is open only in summer. The post office was built in 1909 and is the highest post office in Japan.

Mountain in art

In 2009, Mount Fuji was recognized as one of the 100 Landscapes of Japan which best show contemporary Japan and its culture in the Heisei period.

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Geological cross-section of Fuji volcano. Key: N2 = Tertiary sedimentary rocks; αN2 = Tertiary volcanic rocks; αQ1 = Komitake volcano; α-δQ1 = Ashitaka volcano; βQ2 = Older Fuji volcano; αβQ2 = Younger Fuji volcano.

A view of Mount Fuji from the Taisekiji temple as depicted by the woodblock artist Katsushika Hokusai. The one hundred views of Mount Fuji. From the Elizabeth Joan Tanney estate, c. 1834.

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Mount Fuji (富士山, Fuji-san) is the tallest mountain in Japan, at 3,776 metres (12,388 ft) high. It is also a volcano. It is on the border between Shizuoka Prefecture and Yamanashi Prefecture. Mount Fuji is a famous cultural icon of Japan, as a lot of people have painted it and taken photographs of it.