|• location||Cuddy Shaw Reach, near Linton-on-Ouse|
|• coordinates||54°2′4″N1°16′30″W / 54.03444°N 1.27500°W|
|• elevation||33 ft (10 m)|
|53°42′8″N0°41′46″W / 53.70222°N 0.69611°W Coordinates: 53°42′8″N0°41′46″W / 53.70222°N 0.69611°W|
|0 ft (0 m)|
|Length||52 mi (84 km)|
|Basin size||4,133 sq mi (10,704 km2)|
|• location||Skelton |
|• average||1,830 cu ft/s (51.7 m3/s)|
|River Ouse, Yorkshire|
The River Ouse ( /ˈuːz/ OOZ) is a river in North Yorkshire, England. Hydrologically, the river is a continuation of the River Ure, and the combined length of the River Ure and River Ouse makes it, at 129 miles (208 km), the sixth-longest river of the United Kingdom and (including the Ure) the longest to flow entirely in one county. The length of the Ouse alone is about 52 miles (84 km) but the total length of the river is disputed.
It is a matter of opinion as to whether the River Ouse is formed at the confluence of the River Ure and the much-smaller Ouse Gill Beck at Cuddy Shaw Reach near Linton-on-Ouse, about six miles downstream of the confluence of the River Swale with the River Ure. An alternative opinion is recorded in a publication published in The Yorkshire Post in a series dated 1891, written and illustrated by Tom Bradley. His description and bird's-eye-view maps—specifically in his account of the River Swale—suggests that the River Ouse starts at the confluence of the Swale and the Ure. His narrative states that the Ouse has no specific source, simply flowing from the stated confluence until it runs into the Humber at the confluence of the Ouse and Trent.
Continuing the path of the Ouse downstream from Linton-on-Ouse, it then flows through the city of York and the nearby towns of Selby and Goole before joining with the River Trent at Trent Falls, near the village of Faxfleet, then entering the Humber estuary.
The Ouse's system of tributaries includes the Derwent, Aire, Don, Wharfe, Rother, Nidd, Swale, Ure and Foss. Together they drain a large part of the Pennines, and much of the Yorkshire Dales and North York Moors.
The Ouse valley is a wide, flat plain; heavy rainfall higher in the river's drainage basin can bring severe flooding to settlements. In recent years York, Selby and villages in between have been flooded.
The traditional source of the Ouse is in the village of Great Ouseburn, and is marked by a stone column reading "OUSE RIVER HEAD... OUSEGILL SPRING Ft. YORK 13 miles BOROUGHBRIDGE 4 miles".  The site is 38 yards (35 m) from the present course of Ouse Gill Beck, a small stream earlier known as Usekeld Beck, meaning "Spring or source of the Ouse" (from Old Norse kelda "spring"). 
The start of the Ouse is now considered to be the point where Ouse Gill Beck joins the River Ure, 1.6 miles (2.5 km) south-east of Great Ouseburn.
The name was first recorded in about 780 as Usa. It has been speculated that the name is of Romano-Britonic (celtic) origin, from an assumed word udso-, assumed to be derived from the Indo-European root wed-, meaning "water".  Alternatively, 'Isaf' and 'Ychaf' are common form of place names in modern Welsh (Romano Britonic's successor) meaning 'upper' and 'lower'. The letter 'U' forms an 'I' sound in Welsh. Other sources prefer a Proto-Celtic origin. 
It has been suggested that the Ouse was once known as the 'Ure', but there seems to be no supporting evidence for this claim. The suggestion that the name derives from the Romano-British name of the Ure, assumed to be Isurā from the Roman name for Aldborough, and over time evolved into Isis and finally the Saxon Ouse, would go some way to explaining how the little tributary Ouse Gill Beck usurps the name of the much larger River Ure.  However the form Ouse is little changed from the eighth century.
The York district was settled by Norwegian and Danish people, so parts of the place names could be old Norse. Referring to the etymological dictionary "Etymologisk ordbog", ISBN 82-905-2016-6 dealing with the common Danish and Norwegian languages—roots of words and the original meaning: Os—the mouth of a river. The old Norse wording oss, gradation form ouso.[ original research? ]
The Ouse is navigable throughout its length. Seagoing vessels use the river as far as Howdendyke. The inland port of Goole also accepts seagoing vessels on a regular basis. Goole also offers access to the Aire and Calder Navigation. At Selby there is access to the Selby Canal. The river is tidal up to Naburn; the resultant tidal bore is known locally as "the Aegir". 
At Naburn there is a weir with locks, so that boats of 150 feet (45.7 m) length and 15 feet (4.6 m) beam can reach York.   Above York there is another weir with locks at Linton-on-Ouse, which allows boats of 66 feet (20 m) length to proceed to the River Ure Navigation.  Adjacent to the lock is Linton Lock Hydro plant. This is capable of generating enough electricity to power 450 homes. 
The navigation authority is Associated British Ports from Trent Falls to Goole railway swing bridge at Skelton, and the Canal & River Trust upstream from there. 
In the 18th and 19th centuries, there was considerable commercial traffic on the river, mainly from Selby, which then had a custom house, downstream. After the 1826 opening of the Aire and Calder Navigation, most traffic became concentrated on the port of Goole. This continues, although the coal trade which formed the backbone of the river trade has ceased.
(From the confluence of Swale and Ure)
(Joins Trent at Trent Falls to form Humber) 
With both the Ouse and the Foss running through York, flooding has been a problem throughout its documented history. Flooding is known to have occurred in 1263, 1316, 1564, 1625, 1638, 1947, 1978, 1982, 2000, 2007, 2010 and 2015.   In November 2000, the floods reached a height of 5.4 metres (18 ft) above sea level,  whilst over the Christmas period of 2015, the level reached 5.2 metres (17 ft).  A barrier was installed on the mouth of the River Foss in York city centre in 1989,  so that when the Ouse was in flood, water would not run upstream of the Foss and flood the city.  Flooding occurs typically due to heavy rainfall further upstream in the catchment area of the Ouse (Swale, Ure, Nidd) which covers 1,300 square miles (3,300 km2), (the Foss catchment is 77 square miles (200 km2). 
Low-lying land around the villages of Kelfield, Riccall, Wistow and Cawood, which are south of York, are designated as a floodplain, though it can cause damage to properties there. In February 2020, it was estimated that over 3,000 acres (1,200 ha) of fields were under floodwater, making the size comparable to that of Windermere, England's largest natural lake. 
As the Ouse is tidal as far inland as Naburn, this means that flooding can occur due to heavy rainwater or tidal surges in the downstream settlements of Selby and Goole. 
The River Aire is a major river in Yorkshire, England, 148 kilometres (92 mi) in length. The Handbook for Leeds and Airedale (1890) notes that the distance from Malham to Howden is 58 miles (93 km) direct, but the river's meanderings extend that to 90 miles (140 km). Between Malham Tarn and Airmyn, the river drops 400 metres (1,300 ft). Part of the river below Leeds is canalised, and is known as the Aire and Calder Navigation.
The Aire and Calder Navigation is the canalised section of the Rivers Aire and Calder in West Yorkshire, England. The first improvements to the rivers above Knottingley were completed in 1704 when the Aire was made navigable to Leeds and the Calder to Wakefield, by the construction of 16 locks. Lock sizes were increased several times, as was the depth of water, to enable larger boats to use the system. The Aire below Haddlesey was bypassed by the opening of the Selby Canal in 1778. A canal from Knottingley to the new docks and new town at Goole provided a much shorter route to the River Ouse from 1826. The New Junction Canal was constructed in 1905, to link the system to the River Don Navigation, by then part of the Sheffield and South Yorkshire Navigation.
The River Foss is in North Yorkshire, England. It is a tributary of the River Ouse. It rises in the Foss Crooks Woods near Oulston Reservoir close to the village of Yearsley and runs south through the Vale of York to the Ouse in the centre of York. The name most likely comes from the Latin word Fossa, meaning ditch. It is mentioned in the Domesday Book. The York district was settled by Norwegian and Danish people, so parts of the place names could be old Norse. Referring to the etymological dictionary "Etymologisk ordbog", ISBN 82-905-2016-6 dealing with the common Danish and Norwegian languages – roots of words and the original meaning. The old Norse word Fos (waterfall) meaning impetuous. The River Foss was dammed, and even though the elevation to the River Ouse is small, a waterfall was formed. This may have led to the name Fos which became Foss.
The Derwent is a river in Yorkshire in the north of England. It flows from Fylingdales Moor in the North York Moors National Park, east then southwards as far as its confluence with the River Hertford then westwards through the Vale of Pickering, south through Kirkham Gorge and the Vale of York, joining the River Ouse at Barmby on the Marsh. The confluence is unusual in that the Derwent converges on the Ouse at a shallow angle in an upstream direction.
Selby is a market town and civil parish in the Selby District of North Yorkshire, England, 14 miles (22.5 km) south of York on the River Ouse, with a population at the 2011 census of 14,731.
Selby District is a local government district of North Yorkshire, England. The local authority, Selby District Council, is based in the town of Selby. The Local Authority had a population of 83,449 at the 2011 Census. The southernmost district of North Yorkshire, it borders the City of York unitary authority, the Borough of Harrogate in North Yorkshire, the City of Leeds and City of Wakefield districts in West Yorkshire, the City of Doncaster in South Yorkshire, and the ceremonial county of the East Riding of Yorkshire.
There are nine bridges across the River Ouse within the city of York, England, and sixteen smaller bridges and passages across the narrower River Foss.
The River Ure in North Yorkshire, England is approximately 74 miles (119 km) long from its source to the point where it becomes the River Ouse. It is the principal river of Wensleydale, which is the only major dale now named after a village rather than its river. The old name for the valley was Yoredale after the river that runs through it.
Naburn is a small village and civil parish in the unitary authority of the City of York in North Yorkshire, England. It lies on the eastern side of the River Ouse about 4 miles (6.4 km) south of York. According to the 2001 census the parish had a population of 470, increasing to 516 at the 2011 census.
The River Kyle is a small river in North Yorkshire, England. At just under 6 miles (9.7 km) long, it is one of the shortest classified main rivers in the country.
Trent Falls is the confluence of the River Ouse and the River Trent which forms the Humber between Lincolnshire and the East Riding of Yorkshire in England.
The River Wiske is a tributary of the River Swale in Yorkshire, England. The Wiske gives its name to several villages it passes through. The name Wiske is derived from an Old English word wisca meaning a water meadow. It was once known as the Foulbroke, a name for which some writers commented that it was well deserved.
Yokefleet is a hamlet in the East Riding of Yorkshire, England. It forms part of the civil parish of Blacktoft and a very small part of the civil parish of Laxton. It is situated on the north bank of the River Ouse, downstream from York, Selby and Goole.
The Selby Canal is a 6-mile (9.7 km) canal with 2 locks which bypasses the lower reaches of the River Aire in Yorkshire, England, from the village of West Haddlesey to the town of Selby where it joins the River Ouse. It opened in 1778, and provided the main outlet for the Aire and Calder Navigation until 1826, when it was bypassed by a new cut from Ferrybridge to Goole. Selby steadily declined after that, although traffic to York still used the canal.
In Yorkshire there is a very close relationship between the major topographical areas and the geological period in which they were formed. The Pennine chain of Hills in the west is of Carboniferous origin. The central vale is Permo-Triassic. The North York Moors in the north-east of the county are Jurassic in age while the Yorkshire Wolds to the south east are Cretaceous chalk uplands. The plain of Holderness and the Humberhead levels both owe their present form to the Quaternary ice ages.
This is a list of the longest rivers of the United Kingdom.
Bedale Beck is a river that flows through the eastern end of Wensleydale and passes through Crakehall, Bedale and Leeming before entering the River Swale at a point between Morton-on-Swale and Gatenby. Between source and mouth its length is 25.7 miles (41 km).
The River Tutt is a 8.7-mile (14 km) long tributary of the River Ure in North Yorkshire, England. The river rises near to the villages of Nidd and Scotton draining mainly arable land north eastwards before emptying into the Ure at Boroughbridge. Where the river joins the Ure in Boroughbridge, has been the site of significant historic flooding. An Environment Agency project to alleviate flooding on the river has seen diversion schemes and pumps added to prevent this.
Boothferry Bridge is a crossing over the River Ouse, between the East Riding and West Yorkshire, England, some 2 miles (3.2 km) north-west of Goole. The bridge was opened in 1929, replacing a ferry crossing immediately west of the bridge's location. The Act of Parliament for the building of the bridge in 1925, gave priority to river traffic. This situation still exists, though there have been some attempts to change priorities. On opening, it was the furthest crossing downstream of the river, cutting 25 miles (40 km) off the journey south to London from Kingston upon Hull. The M62 Ouse Bridge opened up to the east of Boothferry Bridge in 1976.