River Huntspill

Last updated

River Huntspill
Huntspill River.jpg
The Huntspill river crossed by a railway bridge and the M5 motorway
Location
Country England
County Somerset
Region Somerset Levels
District Sedgemoor
City Street
Physical characteristics
Mouth River Parrett
  location
Huntspill, Somerset, England
  coordinates
51°12′29″N3°00′52″W / 51.20806°N 3.01444°W / 51.20806; -3.01444 (Mouth)
  elevation
0 ft (0 m)
Length5 mi (8.0 km)
River Huntspill
BSicon uDOCKSe.svg
Bridgwater Bay
BSicon uSTRq.svg
BSicon uSTRq.svg
BSicon ueABZq+l.svg
BSicon uSTRr.svg
River Parrett
BSicon uxWEIRf.svg
Huntspill Sluice
BSicon uexSKRZ-Yu.svg
Sloway bridge
BSicon uexSTR.svg
BSicon FEATURE.svg
Huntspill
BSicon uexSKRZ-Ru.svg
A38 Bleak Bridge
BSicon uexSKRZ-Yu.svg
Puriton Road bridge
BSicon uxmKRZu.svg
Bristol–Exeter railway line
BSicon uexSKRZ-Bu.svg
M5 motorway bridge
BSicon uexSTRq.svg
BSicon uxSTRbl.svg
Pumping station
BSicon uexSKRZ-Yu.svg
Withy Grove bridge
BSicon BUILDING.svg
BSicon uexSTRq.svg
BSicon uexSTR.svg
ROF Bridgwater
BSicon uexSTRq.svg
BSicon uxSTRbl.svg
Pumping station
BSicon uexSKRZ-Yu.svg
B3141 Woolavington Bridge
BSicon uexSTR+l.svg
BSicon uexSTRq.svg
BSicon uexSTRr.svg
Huntspill River
BSicon uexSTR.svg
BSicon uexSTR+l.svg
BSicon uexFABZgr+r.svg
River Brue
BSicon uexSTR.svg
BSicon uxWEIRg.svg
Cripps sluice
BSicon uexABZgl.svg
BSicon uexSKRZ-Yuq.svg
BSicon uxWEIRfl.svg
BSicon uexABZgr.svg
Cripps River
BSicon uexSKRZ-Yu.svg
BSicon uexSTR.svg
Gold Corner bridge
BSicon uxSLUICEbl.svg
BSicon uexSTR.svg
Gold Corner pumping station
BSicon uexABZg+l.svg
BSicon uexSKRZ-Euq.svg
BSicon uxWEIRfr.svg
BSicon uexSTRr.svg
BSicon uexSTR.svg
South Drain

The River Huntspill (or Huntspill River) is an artificial river, in the Somerset Levels, in the Sedgemoor district of Somerset, England. It was built in 1940 to supply process water to ROF Bridgwater, and has resulted in reduced flooding of the lower Brue Valley. Huntspill Sluice at the river's western end, also known as West Huntspill Sluice, separates it from the River Parrett.

Contents

A large section of the river and its surrounding lands has been designated as a national nature reserve which is managed by the Environment Agency.

History

The concept for the Huntspill River was first suggested by J. Aubrey Clark in 1853, as a way of improving the drainage of the lower River Brue. Despite his vigorous support for the plan, no action was taken, largely due to the difficulties of getting the two divisions of the Court of Sewers, one responsible for the river system above Langport and the other for that below Langport, to agree on who was responsible and how such a scheme would be funded. [1]

At the outbreak of World War II a new explosives factory, ROF Bridgwater, was proposed. This would need 4.5 million imperial gallons (20 Ml; 5.4M US gal) of process water per day. Louis Kelting, the Chief Engineer of the Somerset Catchment Board revived Clark's plans, and combined the water supply solution with a drainage scheme. [2] [3] In addition to supplying water to the factory an area of 45,000 acres (18,000 ha) was drained of which 4,000 acres (1,600 ha) regularly flooded. [4]

A 5-mile (8.0 km) straight channel was excavated using a dragline excavator during the early years of World War II. It was constructed as a priority war work, because of its importance to the munitions factory. The plans had been drawn up in late 1939, and by January 1940 the first excavations were being made. [5]

It ran from Gold Corner, where it was connected to the South Drain, to a new outfall on the estuary of the River Parrett, [5] and had retention sluices at both ends, so that it acted as a long reservoir. [6] It was intended that in the summer, when water supply was lower, it would serve as a reservoir with water pumped from the moors; in winter as a drainage channel, via gravity drainage. [5]

The plans were for a 25-foot (7.6 m) channel, with the excavated earth used to create flood banks at its edges. At this depth, water could flow into it from the moors by gravity, but problems were experienced with the design. Because the underlying soil was peat, the weight of the flood bank caused it to rotate and push upwards in the bottom of the channel. Experiments were carried out to find the optimum size for a stable channel, and the result was one that was only 16 feet (4.9 m) deep. [7] The flood banks could not exceed 15 feet (4.6 m) in height, and had to be set back from the edge of the channel by at least 30 feet (9.1 m). Because of the lack of depth, water from the South Drain had to be pumped into the river. The existing pumping station at Gold Corner could not cope with all the water from the drain, as well as flood water from the moors, so had to be enlarged. [8]

HuntspillRiver1.jpg

Once the entire flow of the South Drain was entering the river, the section northwards from Gold Corner to the River Brue became redundant. Rather than allow it to silt up, it was enlarged, and Cripps sluice constructed where it met the Brue. This enabled water from the Brue, which had nowhere to go because its outlet was blocked by high tides, to be diverted southwards to the Huntspill river, with the result that flooding in the Brue valley was significantly reduced. [9] The pumping station, with four Sultzer horizontal pumps which are powered by two-cylinder oil engines made by Crossley, has since been modernised including the conversion of one of the pumps to use electricity and replacing the fuel tanks. [10] [11] [12]

Excavation of the channel cut through an area containing Roman salt works, the remains of which can be seen beside the river. The ground conditions made construction of bridges difficult, and required piles to be driven down to the underlying rock, some 60 feet (18 m) long, and one bridge requiring 80-foot (24 m) piles. The first of the pumps was operational by July 1942, and the pumping station was completed by the end of 1942. The total cost of the project was £411,594 (equivalent to £24,230,334 in 2023), which included £35,000 for the construction of the new pumping station, and £26,000 to purchase the machinery fitted into it. [13]

Flora and fauna

A 366-acre (148 ha) stretch of the river, from Gold Corner to Huntspill Sluice (excluding the Cripps River), is a national nature reserve. [6] [14] The NNR is managed by the Environment Agency, rather than by Natural England, responsible for most of the other reserves in England. [6] This arrangement is authorised by section 35 of the Wildlife and Countryside Act 1981, and funding for the maintenance and upkeep of the river as a reserve is still provided by Natural England. [6] The river and its catchment area include several Sites of Special Scientific Interest; of these, Street Heath, Shapwick Heath, and Westhay Heath are affected by water levels in the South Drain, while the water levels in Catcott, Edington and Chilton Moors SSSI are directly controlled by Gold Corner pumping station. This site has been designated because of the types of flowers found in its wet grasslands, the variety of wildlife found in its ditches, and its populations of wading birds, particularly lapwing, redshank and snipe. [15]

The river discharges into the River Parrett just south of Highbridge. The Parrett flows into Bridgwater Bay, which is also an important national nature reserve, [16] on the edge of the Bristol Channel.

Water quality

The Environment Agency measure water quality of 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. [17]

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

SectionEcological statusChemical statusLengthCatchmentChannel
Huntspill [18] Moderate Fail 4.9 miles (7.9 km)11.73 square miles (30.4 km2)artificial

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 mercury compounds, neither of which had previously been included in the assessment. [19]

Points of interest

Bibliography

Related Research Articles

<span class="mw-page-title-main">River Parrett</span> River in Dorset and Somerset, England

The River Parrett flows through the counties of Dorset and Somerset in South West England, from its source in the Thorney Mills springs in the hills around Chedington in Dorset. Flowing northwest through Somerset and the Somerset Levels to its mouth at Burnham-on-Sea, into the Bridgwater Bay nature reserve on the Bristol Channel, the Parrett and its tributaries drain an area of 660 square miles (1,700 km2) – about 50 per cent of Somerset's land area, with a population of 300,000.

<span class="mw-page-title-main">New Bedford River</span> Watercourse in Cambridgeshire, England

The New Bedford River, also known as the Hundred Foot Drain because of the distance between the tops of the two embankments on either side of the river, is a navigable man-made cut-off or by-pass channel of the River Great Ouse in the Fens of Cambridgeshire, England. It provides an almost straight channel between Earith and Denver Sluices. It is tidal, with reverse tidal flow being clearly visible at Welney, some 19 miles (31 km) from the sea.

<span class="mw-page-title-main">Somerset Levels</span> Coastal plain and wetland area of Somerset, England

The Somerset Levels are a coastal plain and wetland area of Somerset, England, running south from the Mendips to the Blackdown Hills.

<span class="mw-page-title-main">Bridgwater Bay</span> Bay in Bristol Channel

Bridgwater Bay is on the Bristol Channel, 5 kilometres (3.1 mi) north of Bridgwater in Somerset, England at the mouth of the River Parrett and the end of the River Parrett Trail. It stretches from Minehead at the southwestern end of the bay to Brean Down in the north. The area consists of large areas of mudflats, saltmarsh, sandflats and shingle ridges, some of which are vegetated. It has been designated as a Site of Special Scientific Interest (SSSI) covering an area of 3,574.1 hectares since 1989, and is designated as a wetland of international importance under the Ramsar Convention. The risks to wildlife are highlighted in the local Oil Spill Contingency Plan.

<span class="mw-page-title-main">River Tone</span> River in Somerset, England

The River Tone is a river in the English county of Somerset. The river is about 33 kilometres (21 mi) long. Its source is at Beverton Pond near Huish Champflower in the Brendon Hills, and is dammed at Clatworthy Reservoir. The reservoir outfall continues through Taunton and Curry and Hay Moors, which are designated as a Site of Special Scientific Interest. Finally, it flows into the River Parrett at Burrowbridge.

<span class="mw-page-title-main">Glastonbury Canal</span> Canal in Somerset, England

The Glastonbury Canal ran for approximately 14 miles (23 km) through two locks from Glastonbury to Highbridge in Somerset, England, where it entered the River Parrett and from there the Bristol Channel. The canal was authorised by Parliament in 1827 and opened in 1834. It was operated by The Glastonbury Navigation & Canal Company. Most of it was abandoned as a navigation in 1854, when a railway was built along the towpath.

<span class="mw-page-title-main">River Lymn</span> River in Lincolnshire, England

The River Lymn is a river in Lincolnshire, England. It rises in the Wolds on the eastern slope of Castcliffe Hill in Fulletby parish. It flows south-eastwards to the Lincolnshire Marsh, where it becomes known as the Steeping River on the boundary of Great Steeping parish. The main channel is supplemented by the Wainfleet Relief Channel as it passes Wainfleet All Saints, and the relief channel is joined by the old course of the Lymn. Once the two channels rejoin, there are three flood defence structures to protect the region from flooding by the North Sea.

<span class="mw-page-title-main">South Forty-Foot Drain</span> Drainage canal in eastern England

The South Forty-Foot Drain, also known as the Black Sluice Navigation, is the main channel for the land-drainage of the Black Sluice Level in the Lincolnshire Fens. It lies in eastern England between Guthram Gowt and the Black Sluice pumping station on The Haven, at Boston. The Drain has its origins in the 1630s, when the first scheme to make the Fen land available for agriculture was carried out by the Earl of Lindsey, and has been steadily improved since then. Water drained from the land entered The Haven by gravity at certain states of the tide until 1946, when the Black Sluice pumping station was commissioned.

<span class="mw-page-title-main">Geology of Somerset</span>

Somerset is a rural county in the southwest of England, covering 4,171 square kilometres (1,610 sq mi). It is bounded on the north-west by the Bristol Channel, on the north by Bristol and Gloucestershire, on the north-east by Wiltshire, on the south-east by Dorset, and on the south west and west by Devon. It has broad central plains with several ranges of low hills. The landscape divides into four main geological sections from the Silurian through the Devonian and Carboniferous to the Permian which influence the landscape, together with water-related features.

<span class="mw-page-title-main">River Brue</span> River in Somerset, England

The River Brue originates in the parish of Brewham in Somerset, England, and reaches the sea some 50 kilometres (31 mi) west at Burnham-on-Sea. It originally took a different route from Glastonbury to the sea, but this was changed by Glastonbury Abbey in the twelfth century. The river provides an important drainage route for water from a low-lying area which is prone to flooding which man has tried to manage through rhynes, canals, artificial rivers and sluices for centuries.

<span class="mw-page-title-main">King's Sedgemoor Drain</span> Artificial drainage channel in Somerset, England

King's Sedgemoor Drain is an artificial drainage channel which diverts the River Cary in Somerset, England along the southern flank of the Polden Hills, to discharge into the River Parrett at Dunball near Bridgwater. As the name suggests, the channel is used to help drain the peat moors of King's Sedgemoor. There was opposition to drainage schemes from the local inhabitants, who feared that they would lose their common grazing rights. However, the main channel was constructed between 1791 and 1795, and despite some defects, brought some relief from flooding to the area.

<span class="mw-page-title-main">Westonzoyland Pumping Station Museum</span> English industrial heritage museum

The Westonzoyland Pumping Station Museum of Steam Power and Land Drainage is a small industrial heritage museum dedicated to steam powered machinery at Westonzoyland in the English county of Somerset. It is a Grade II* listed building.

<span class="mw-page-title-main">Huntspill</span> Village in Somerset, England

Huntspill is a village and former civil parish on the Huntspill Level in Somerset, England. It lies on the A38 road, 1.5 miles (2.4 km) south of Highbridge. The village is the principal settlement in the civil parish of West Huntspill. In 2019 it had an estimated population of 1102.

<span class="mw-page-title-main">Witham Navigable Drains</span> United Kingdom legislation

The Witham Navigable Drains are located in Lincolnshire, England, and are part of a much larger drainage system managed by the Witham Fourth District Internal Drainage Board. The Witham Fourth District comprises the East Fen and West Fen, to the north of Boston, which together cover an area of 97 square miles (250 km2). In total there are over 438 miles (705 km) of drainage ditches, of which under 60 miles (97 km) are navigable. Navigation is normally only possible in the summer months, as the drains are maintained at a lower level in winter, and are subject to sudden changes in level as a result of their primary drainage function, which can leave boats stranded. Access to the drains is from the River Witham at Anton's Gowt Lock.

<span class="mw-page-title-main">Sowy River</span> Artificial drainage channel in Somerset, England

The Sowy River is an artificial drainage channel in Somerset, England, designed to act as a flood relief channel for the River Parrett. Water from the Parrett can be diverted into it just below Langport, and is conveyed to the King's Sedgemoor Drain, which discharges back into the Parrett much nearer to its outfall into the Bristol Channel. Following extensive flooding of the surrounding land in 2014, new culverts to carry the river under the A372 road at Beer Wall were constructed, and a three-year project to raise the banks and widen the channel to increase its capacity was undertaken.

<span class="mw-page-title-main">Ham Wall</span> Wetland nature reserve in Somerset, England

Ham Wall is an English wetland National Nature Reserve (NNR) 4 kilometres (2.5 mi) west of Glastonbury on the Somerset Levels. It is managed by the Royal Society for the Protection of Birds (RSPB). Since the last Ice Age, decomposing plants in the marshes of the Brue valley in Somerset have accumulated as deep layers of peat that were commercially exploited on a large scale in the twentieth century. Consumer demand eventually declined, and in 1994 the landowners, Fisons, gave their old workings to what is now Natural England, who passed the management of the 260 hectares Ham Wall section to the RSPB.

<span class="mw-page-title-main">River Torne (England)</span> River in the north of England

The River Torne is a river in the north of England, which flows through the counties of South Yorkshire and North Lincolnshire. It rises at the Upper Lake at Sandbeck Hall, in Maltby in South Yorkshire, and empties into the River Trent at Keadby pumping station. Much of the channel is engineered, as it plays a significant role in the drainage of Hatfield Chase, which it crosses.

<span class="mw-page-title-main">Winter flooding of 2013–14 on the Somerset Levels</span> Flooding in Somerset, England

From December 2013 onwards the Somerset Levels suffered severe flooding as part of the wider 2013–2014 Atlantic winter storms in Europe and subsequent 2013–2014 United Kingdom winter floods. The Somerset Levels, or the Somerset Levels and Moors as they are less commonly but more correctly known, is a coastal plain and wetland area of central Somerset, in South West England, running south from the Mendip Hills to the Blackdown Hills.

The Avalon Marshes Partnership is a group of conservation organisations working together in the Somerset Levels. The members are Natural England, the Royal Society for the Protection of Birds (RSPB), the Somerset Wildlife Trust, the Hawk and Owl Trust, Historic England, South West Heritage Trust and the Environment Agency. Between 2012 and 2016 the scheme was supported by a Heritage Lottery Fund grant of £1,772,500 with additional investment of £920,080 from other sources. The Avalon Marshes Centre, run by Natural England, is near the Shapwick Heath reserve. The network of reserves and private land managed for conservation in the Avalon marshes means that wetland management can be carried out on a landscape scale.

References

  1. Williams 1970, pp. 158, 210.
  2. Agency 1996, p. 4.
  3. "Twentieth-century reservoir, Huntspill River, West Huntspill". Somerset Historic Environment Record. Somerset County Council. Retrieved 19 September 2015.
  4. "Drainage of the Brue Valley". Capture Highbridge. Archived from the original on 24 September 2020. Retrieved 19 September 2015.
  5. 1 2 3 Williams 1970, p. 238.
  6. 1 2 3 4 "Huntspill River National Nature Reserve". Natural England . Archived from the original on 27 February 2012. Retrieved 31 January 2010.
  7. Agency 1996, pp. 4, 11.
  8. Williams 1970, pp. 239–240.
  9. Williams 1970, p. 240.
  10. Agency 1996, pp. 7, 10.
  11. "River Huntspill". Somerset Rivers. Archived from the original on 30 October 2020. Retrieved 19 September 2015.
  12. "Gold Corner pumping station, Gold Corner, Cossington". Somerset Historic Environment Record. Somerset County Council. Retrieved 19 September 2015.
  13. Agency 1996, p. 5.
  14. "Huntspill River NNR map". Natural England. Archived from the original on 11 May 2012.
  15. Agency 1996, p. 9.
  16. "Bridgwater Bay National Nature Reserve". Natural England . Archived from the original on 11 March 2007. Retrieved 22 November 2007.
  17. "Glossary (see Biological quality element; Chemical status; and Ecological status)". Catchment Data Explorer. Environment Agency. Retrieved 17 May 2017.
  18. "Huntspill". Catchment Data Explorer. Environment Agency.
  19. "Chemical Status". Environment Agency. 2023. Archived from the original on 14 March 2024.

Commons-logo.svg Media related to Huntspill River at Wikimedia Commons