River Lark

Last updated

River Lark
Riverlark 3766.JPG
The river near Icklingham
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Location of the river mouth just outside Suffolk
Location
Country England
Physical characteristics
Source Whepstead
  coordinates 52°11′18″N0°39′09″E / 52.1883°N 0.6525°E / 52.1883; 0.6525
  elevation104 m (341 ft)
2nd source Bradfield Combust
  coordinates 52°10′39″N0°43′57″E / 52.1775°N 0.7325°E / 52.1775; 0.7325
  elevation65 m (213 ft)
Mouth Littleport, River Great Ouse
  coordinates
52°26′07″N0°18′43″E / 52.4352°N 0.3120°E / 52.4352; 0.3120
  elevation
0 m (0 ft)
Length57 km (35 mi)
Basin features
Tributaries 
  leftRiver Linnet
River Lark
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River Great Ouse
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former A10 bridge
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Pumping Stn
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Ely to Norwich Railway bridge
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Pumping Stn
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B1382 Prickwillow Bridge
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Museum of Fen Pumping Engines
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Lark Engine PS and Engine Drain
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Soham Tunnel Drain
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Pumping Stn
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Pumping Stn
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Pumping Stn
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Isleham weir and lock
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River Island Marina
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Lee Brook
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Limit of navigation
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Judes Ferry Bridge
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Kings Staunch
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Bridge
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Mill
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B1102 Mildenhall Bridge
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A11 Barton Mills Bridge
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Cut-off channel
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Tuddenham Mill Stream
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Weir
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Temple Br (Icknield Way Path)
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Icklingham lock and Mill
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Farthing Bridge
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A1101 Road bridge
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West Stow bridge
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lock and Chimney Mill
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Weir (Hengrave Lock)
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Weir (Ducksluice Farm Lock)
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Fornham bridge
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Weir (Fornham Park Lock)
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Fornham Dock (original terminus)
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B1106 Tollgate Bridge (site of lock)
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A14 Road bridge
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Northgate Dock
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Bury St Edmunds station
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Eastgate Bridge (proposed terminus)
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River Linnet
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A134 Road bridge
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to source

The River Lark crosses the border between Suffolk and Cambridgeshire in England. It is a tributary of the River Great Ouse, and was extended when that river was re-routed as part of drainage improvements. It is thought to have been used for navigation since Roman times, and improvements to its navigability were made in 1638 and in the early 18th century, when locks and staunches were built. Special powers to improve the river from Mildenhall to Bury St Edmunds were granted by statute (River Lark Act 1698). The upper terminus was on the northern edge of Bury St Edmunds, but a new dock was opened near the railway station after the Eastern Union Railway opened its line in 1846.

Contents

The navigation was officially abandoned in 1888, but despite this, commercial use of the river continued until 1928. Following an acquisition by the Great Ouse Catchment Board, locks at Barton Mills and Icklingham were rebuilt in the 1960s, but were isolated when the A11 road bridge was lowered soon afterward. It now has one operational lock at Isleham, and can be navigated to Jude's Ferry.

Water quality in the river was generally moderate in 2016, although there was a section where the quality was bad, the lowest rating given by the Environment Agency, who monitor English rivers. The river hosts a large population of signal crayfish, an invasive species which has increased as the eel population has diminished.

Course

Rising at Bradfield Combust, [1] to the south of Bury St Edmunds in Suffolk, it flows through Bury, Mildenhall and Prickwillow, and joins the Great Ouse south of Littleport in Cambridgeshire. It is about 31 miles (50 km) long, of which 10.1 miles (16.3 km) is navigable. [2]

The upper river is an important focus for prehistoric activity, particularly relating to the Neolithic enclosure at Fornham All Saints. This comprises a large causewayed enclosure, several ring features, and a long cursus. [3]

Just above Barton Mills, a side weir connects the river to the start of the Cut-off Channel, a 28-mile (45 km) drain running from there to Denver along the south-eastern edge of the Fens, which was constructed in the 1950s and 1960s. During times of flood it carries the headwaters of the River Lark, the River Wissey and the Little Ouse to Denver Sluice on the River Great Ouse. [4]

Below Barton Mills, the mill stream at Mildenhall marks the start of a footpath which follows the north bank of the river, passing Mildenhall Cricket Club, to Isleham, after which there are footpaths and drove roads on both sides of the river to its junction with the Great Ouse. There is a weir at King's Staunch, after which comes Jude's Ferry, the current head of navigation, where boats at least 60 feet (18 m) in length can be turned. A magnificent hoard of late Roman silver was discovered at nearby Thistley Green in 1942, and the 34 pieces, which included bowls, spoons, dishes and goblets, were declared to be Treasure trove and are now in the British Museum. [5]

Barges on the River Lark, c. 1910 Barges on the River Lark.jpg
Barges on the River Lark, c. 1910

The stretch from Jude's Ferry to Isleham includes several pill-boxes, which were constructed during World War II to defend against invasion. [6] Above the start of the lock cut is a memorial to the famous Baptist preacher Charles Spurgeon, who was baptised in the river on 3 May 1850. The site, where a chain ferry once crossed the river, and another near the weir were used for public baptisms until 1970. Isleham itself has three pubs, all dating from the 17th century, some shops and a large marina. There was an outbreak of cholera here in the 1850s, when over 500 people were "living in hollows" as a result of poverty which affected many fenland villages. In medieval times, Isleham was an important port with three quays. Remains of a Roman villa and over 6,000 Bronze-Age artefacts, which are now in the Moyse's Hall Museum at Bury St Edmunds, indicate that it has been a centre of occupation since antiquity. [7]

From Isleham to Prickwillow, the river flows for almost 4 miles (6.4 km) in an artificial cut, thought to have been constructed by the Romans, and joined the River Great Ouse at Prickwillow until 1830. The Great Ouse was then diverted, and its old course occupied by the Lark. [8] There are a number of pumping stations on the banks of this section, including the Lark Engine, which has been the main outlet for the drainage of the southern part of Burnt Fen since 1842. [9] Many of the surrounding ditches once flowed into the river by gravity, but the draining of the fens has resulted in the land surface dropping, and the water must now be raised by up to 16 feet (4.9 m) from the ditches to the river. At Mile End, two pumping stations sit one above the other, indicating the progressive sinking of the land. Prickwillow is home to the Museum of Fen Pumping Engines, itself once a working pumping station, and now holding several engines which were used in the draining of the Fens. [6]

Prickwillow vicarage also demonstrates the shrinking of the land. Its ground floor rooms were originally the cellars, and the two steps leading to the front door have been replaced by nine. Below Prickwillow, the river is crossed by the Ely to Norwich railway line. The final 0.9 miles (1.4 km) of the river's course are quite straight, as the river flows through another artificial channel. [1] At its junction with the Great Ouse, the channel is crossed by a road which was formerly the A10, which ran along the banks of the Great Ouse at this point on its route from Ely to Littleport, [10] but this section has been bypassed by a new alignment of the road further to the west. [11]

Management

The river is managed and maintained by the Environment Agency, from whom boat owners must obtain a licence in order to use the waterway. [12] The Agency have designated the section from Sicklesmere through Bury St Edmunds and Fornham St Martin to Isleham as a Flood Warning Area. [13]

The Lark is thought to have been used by the Romans for the carriage of clunch, a building material quarried from pits near Isleham, and stone for the building of Bury St Edmunds Abbey was carried to the site along the river. The first records of plans to improve the river for navigation date from 1635, when Henry Lambe sought to make it navigable from the Ouse to Bury St Edmunds. Although his plans were approved by a commission, there was local opposition, and it was December 1637 before he was granted a licence from the King to complete the work. The River Lark Act 1698 (11 Will. 3. c. 22) was passed after having been pending for several years. [14] By 1700, the upper reaches were again in disrepair, and Henry Ashley obtained powers to improve the river from Worlington to below Mildenhall Mill, and to make it navigable from there to East Gate bridge in Bury St Edmunds. In addition to a schedule of tolls for the carriage of commodities, special provision was made so that some coal could be carried without incurring tolls, to assist the poor of Bury St Edmunds, and "gentlemen and persons of quality" did not have to pay for the use of the river by pleasure boats. [15]

Ashley built 14 staunches and 11 sluices, the latter almost certainly referring to pound locks. In 1716, tolls amounted to £475, although the work was unfinished, and Ashley estimated that a further £800 was required to complete it. Disputes with millers were recorded in 1720 and 1722, and ownership of the navigation was disputed on Ashley's death. The Master of the Rolls gave it to Joshua and Joanna Palmer in 1742, but receipts were meagre, at around £267 per year, and the maintenance carried out was barely sufficient. Ownership had passed to their son, Ashley Palmer, by 1781, when the navigation made a profit of £274. In 1790, there were plans for a 31-mile (50 km) link from Bury St Edmunds to the River Stour at Mistley, which John Rennie surveyed, but it involved heavy engineering work, including a 2,420-yard (2,210 m) tunnel, and the estimated cost of £75,000 could not be raised. Palmer died in 1792, and the river was managed by Susanna Palmer, his widow. [16]

River Lark Navigation Act 1817
Act of Parliament
Coat of Arms of the United Kingdom (1816-1837).svg
Long title An Act for amending and rendering more effectual an Act of His late Majesty King William the Third, for making the River Lark alias Burn navigable.
Citation 57 Geo. 3. c. lxxi
Dates
Royal assent 10 July 1817
Text of statute as originally enacted
The Drainage Engine Museum at Prickwillow Prickwillow Drainage Engine Museum.jpg
The Drainage Engine Museum at Prickwillow

The costs of maintenance were high, for in 1807 tolls of £1,348 were received, but profits were less than one third of that amount. Recognising that a large investment was needed to keep the river profitable, an attempt was made in 1817 to sell it to the Duke of Norfolk for £12,000, but this came to nothing. The original commissioners appointed under the act obtained in 1700 had failed to appoint any more commissioners, and so new commissioners were authorised by a further act of Parliament, the River Lark Navigation Act 1817 (57 Geo. 3. c. lxxi), with powers to raise the tolls to pay for the maintenance of the navigation. Little work was done, although a new lock and staunch were built at Isleham under provisions of the Eau Brink Act 1821 (1 & 2 Geo. 4. c. lxiv). The South Level Commissioners, who had been formed by an act of Parliament[ which? ] obtained in 1827, took over control of the lower river, and re-routed it to join the new course of the Great Ouse which had been diverted into a cut to the west of its original route. Trade on the upper river was increasingly difficult, as a result of obstructions and shoals in the channel. The lighters used on the river often had to be partially unloaded at Prickwillow, to allow them to navigate the shallower sections. [17]

Control of the river above Isleham was inherited by Sir Thomas Cullum when Susanna Palmer died. He rebuilt most of the locks and staunches in the 1830s, resulting in increased trade in coal and general merchandise which originated from Kings Lynn, but success was short lived, as the Eastern Union Railway opened a line from Ipswich to Bury St Edmunds in 1846, and decline was immediate. In the 1850s, with the Fornham to Bury section impassible, the Bury St Edmunds Navigation Company proposed a scheme to reopen the river to Bury railway station. Their prospectus stated that the Eastern Union Railway had been managing the river for seven years, but little changed, as they failed to raise a working capital of £20,000, and by the 1860s, the route above Mildenhall was ruined. [18]

Abandonment of the river as a navigation was authorised by the Railway and Canal Traffic Act 1888. The River Arun in West Sussex was the only other river abandoned by this act. Despite this, the Eastern Counties Navigation and Transport Co Ltd bought the river from Lee Brook to Bury St Edmunds in 1890, made Tuddenham Mill Stream navigable, repaired locks and staunches on the main river, and re-opened it in September 1894. The company was bankrupt by December, and the Icklingham to Bury St Edmunds section closed again. Some trading continued on the lower reaches, but commercial carrying ceased after 1928. Ownership of the river passed to the Great Ouse Catchment Board with the passing of the Land Drainage Act 1930. They rebuilt Barton Mills and Icklingham locks in the 1960s, but the bridge carrying the A11 road at Barton Mills was lowered soon afterward, and the present head of navigation is at Jude's Ferry. [19]

Ecology

The Environment Agency assesses the water quality within the river systems in England. Each is given an overall ecological status, which may be one of five levels: high, good, moderate, poor and bad. There are several components that are used to determine this, including biological status, which looks at the quantity and varieties of invertebrates, angiosperms and fish. Chemical status, which compares the concentrations of various chemicals against known safe concentrations, is rated good or fail. [20]

The water quality of the River Lark system was as follows in 2019.

SectionEcological statusChemical statusLengthCatchmentChannel
Lark (US Hawstead) [21] Moderate Fail 2.8 miles (4.5 km)5.79 square miles (15.0 km2)
Lark (Hawstead to Abbey Gardens) [22] Bad Fail 4.1 miles (6.6 km)11.24 square miles (29.1 km2)heavily modified
Lark (Abbey Gardens to Mildenhall) [23] Moderate Fail 14.1 miles (22.7 km)33.60 square miles (87.0 km2)heavily modified
Lark downstream of Mill Street Bridge [24] Moderate Fail 3.4 miles (5.5 km)8.21 square miles (21.3 km2)heavily modified
Ely Ouse (South Level) [25] Moderate Fail 54.5 miles (87.7 km)180.02 square miles (466.2 km2)artificial

Separate figures for the Lark downstream of Isleham are not available, and the final row covers the lower section of the Lark, parts of the River Great Ouse and a number of its other tributaries. The Hawstead to Abbey Gardens section deteriorated from poor quality in 2015 to bad in 2016. The Environment Agency have set a target for ensuring it is moderate by 2027. Like most rivers in the UK, the chemical status changed from good to fail in 2019, due to the presence of polybrominated diphenyl ethers (PBDE) and perfluorooctane sulphonate (PFOS), neither of which had previously been included in the assessment. [26]

The river hosts a large population of the invasive species, the signal crayfish. A study published in 2011 identified the decline in eels, which predate the crayfish, as the major factor in their dramatic increase. [27]

Points of interest


There is a second, much shorter, River Lark also in Suffolk which flows into the River Deben at Martlesham.

See also

Bibliography

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References

  1. 1 2 Blair 2006, p. 79.
  2. Blair 2006, p. 13.
  3. "Landscape Character Assessment" (PDF). Suffolk County Council. p. 2. Archived from the original (PDF) on 13 February 2012. Retrieved 26 April 2009.
  4. Thirsk 2002.
  5. Blair 2006, p. 86.
  6. 1 2 Blair 2006, p. 84.
  7. Blair 2006, p. 85.
  8. Boyes & Russell 1977, p. 178.
  9. Beckett 1983, pp. 22–23.
  10. Blair 2006, p. 80.
  11. Ordnance Survey, 1:25000 map
  12. Blair 2006, p. 7.
  13. "River Lark from Sicklesmere to Isleham Flood Warning Area". Environment Agency. Retrieved 29 December 2020.
  14. Gage, John (1822). The history and antiquities of Hengrave, in Suffolk. London & Bury St Edmunds: J. Carpenter; J. Deck.
  15. Boyes & Russell 1977, pp. 178–179.
  16. Boyes & Russell 1977, pp. 179–180.
  17. Boyes & Russell 1977, pp. 180–181.
  18. Boyes & Russell 1977, pp. 181–182.
  19. Boyes & Russell 1977, pp. 182–183.
  20. "Glossary (see Biological quality element; Chemical status; and Ecological status)". Catchment Data Explorer. Environment Agency. Retrieved 15 May 2017.
  21. "Lark (US Hawstead)". Catchment Data Explorer. Environment Agency. Retrieved 6 October 2017.
  22. "Lark (Hawstead to Abbey Gardens)". Catchment Data Explorer. Environment Agency. Retrieved 6 October 2017.
  23. "Lark (Abbey Gardens to Mildenhall)". Catchment Data Explorer. Environment Agency. Retrieved 6 October 2017.
  24. "Lark downstream of Mill Street Bridge". Catchment Data Explorer. Environment Agency. Retrieved 6 October 2017.
  25. "Ely Ouse (South Level)". Catchment Data Explorer. Environment Agency. Retrieved 6 October 2017.
  26. "Chemical Status". Environment Agency. 2023. Archived from the original on 14 March 2024.
  27. Longshaw & Stebbing 2016, p. 346.

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