This is a list of reservoirs on Jersey. Jersey Water operate six main reservoirs, with an additional two reservoirs for untreated water that can be pumped between the other reservoirs. Raw water can be stored at Mont Gavey and Augres Treatment Works, with treated water being able to be stored at Augres, Handois, Les Platons, and Westmount. [1] The two water treatment works on the island can process a maximum daily capacity of 46,000,000 litres (10,000,000 imp gal; 12,000,000 US gal) of water daily (28,000,000 litres (6,200,000 imp gal; 7,400,000 US gal) at Handois, and 18,000,000 litres (4,000,000 imp gal; 4,800,000 US gal) at Augres). [2]
Security of water supply on the island has led to investigations into increasing the amount of water available; when at peak capacity, the combined amount of water in the six reservoirs would supply enough water for Jersey for 120 days. [3] One option mooted is to expand Val de la Mare Reservoir, or use parts of the worked out Gigoulande Quarry as a seventh reservoir. [4] A further option of a seventh reservoir is in the Mourier Valley on the north-western side of the island. [5] The six main reservoirs listed fall under Reservoir (Jersey) Law 1996. [6]
Name | Coordinates | Open | Water storage | Image | Notes | Ref |
---|---|---|---|---|---|---|
Dannemarche Reservoir | 49°13′01″N2°07′59″W / 49.217°N 2.133°W | 1909 | 93,000,000 litres (20,000,000 imp gal; 25,000,000 US gal) | The middle reservoir in the Waterworks Valley (the upper reservoir being Handois, and the lower one Millbrook). The term waterworks relates to when the stream through the valley powered several watermills before the age of steam. | [7] [8] [9] | |
Grands Vaux Reservoir | 49°12′14″N2°05′13″W / 49.204°N 2.087°W | 1951 | 230,000,000 litres (51,000,000 imp gal; 61,000,000 US gal) | Located 2 kilometres (1.2 mi) north-east of St Helier, at a height of 36 metres (118 ft) above Ordnance Datum. | [10] [11] | |
Handois | 49°13′55″N2°07′52″W / 49.232°N 2.131°W | 1932 | 1,875,000 litres (412,000 imp gal; 495,000 US gal) | The largest reservoir on Jersey and the first of the chain of three down Waterworks Valley. The Handois water treatment works is located on the same site. | [12] | |
Millbrook Reservoir | 49°12′22″N2°08′02″W / 49.206°N 2.134°W | 1896 | 364,000 litres (80,000 imp gal; 96,000 US gal) | First of the main reservoirs to be built on the island, at a cost of £6,767 (equivalent to £833,074in 2021) | [7] [12] [13] | |
Queens Valley Reservoir | 49°11′46″N2°02′38″W / 49.196°N 2.044°W | 1991 | 1,193,000,000 litres (262,000,000 imp gal; 315,000,000 US gal) | The dam wall is constructed from a rock-filled embankment with a bitumnous concrete core. The reservoir was first proposed in 1975, and flooded Queens Valley. The only private dwelling to have the occupants forcibly evicted from, was also the building used as the home for the fictional detective Jim Bergerac. | [14] [15] | |
Val de la Mare Reservoir | 49°13′01″N2°12′18″W / 49.217°N 2.205°W | 1962 | 938,000,000 litres (206,000,000 imp gal; 248,000,000 US gal) | The dam wall reaches a height of 29 metres (95 ft) | [16] [17] |
Some abstraction points are located on smaller reservoirs such as La Hague, and Le Maseline. [18] [19]
Warragamba Dam is a heritage-listed dam in the outer South Western Sydney suburb of Warragamba, Wollondilly Shire in New South Wales, Australia. It is a concrete gravity dam, which creates Lake Burragorang, the primary reservoir for water supply for the city of Sydney. The dam wall is located approximately 65 kilometres (40 mi) W of Sydney central business district, 4½ km SW of the town of Wallacia, and 1 km NW of the village of Warragamba.
Lake Burragorang is a man-made reservoir in the lower Blue Mountains of New South Wales, Australia, serving as a major water supply for greater metropolitan Sydney. The dam impounding the lake, the Warragamba Dam, is located approximately 60 kilometres (37 mi) southwest of the Sydney central business district.
Lake Vyrnwy is a reservoir in Powys, Wales, built in the 1880s for Liverpool Corporation Waterworks to supply Liverpool with fresh water. It flooded the head of the Vyrnwy valley and submerged the village of Llanwddyn.
The Waranga Dam is a major earthfill embankment dam with an uncontrolled spillway located approximately 150 kilometres (93 mi) north of Melbourne in the North Central region of the Australian state of Victoria. The impounded off-stream reservoir is Waranga Basin and forms part of the Goulburn River irrigation system, irrigating an area of 626 square kilometres (242 sq mi). The dam and reservoir are located in Shire of Campaspe near the City of Greater Shepparton and is located 8 kilometres (5 mi) north-east of Rushworth, 12 kilometres (7.5 mi) south-west of Tatura, and near Murchison. When full, the reservoir covers an area of 58.5 square kilometres (22.6 sq mi).
Trinity is one of the twelve parishes of Jersey in the Channel Islands. It is 5.8 kilometres (3.6 mi) north of St Helier. It has a population of 3,156. The parish covers 6,975 vergées (12.3 km2 [4.7 sq mi]). Les Platons in the north of the parish is the highest point in Jersey. The parish borders St John, St Helier, St Saviour and St Martin.
St Ouen is one of the twelve parishes of Jersey in the Channel Islands. It is around 8.8 kilometres (5.5 mi) north-west of St Helier. It has a population of 4,097. The parish is the largest parish by surface area, covering 8,525 vergées (15 km2), and is located in part on a peninsula.
Frankley Reservoir is a semi-circular reservoir for drinking water in Birmingham, England, operated by Severn Trent Water. Its construction was authorised by the Birmingham Corporation Water Act 1892 It was built by Birmingham Corporation Water Department to designs by Abram Kellett of Ealing in 1904.
Yorkshire Water is a water supply and treatment utility company servicing West Yorkshire, South Yorkshire, the East Riding of Yorkshire, part of North Lincolnshire, most of North Yorkshire and part of Derbyshire, in England. The company has its origins in the Yorkshire Water Authority, one of ten regional water authorities created by the Water Act 1973, and privatised under the terms of the Water Act 1989, when Yorkshire Water plc, the parent company of the Yorkshire Water business, was floated on the London Stock Exchange. The parent company was Kelda Group in 1999. In February 2008, Kelda Group was bought by a consortium of infrastructure funds.
The Hinze Dam is a rock and earth-fill embankment dam with an un-gated spillway across the Nerang River in the Gold Coast hinterland of South East, Queensland, Australia. The main purpose of the dam is for potable water supply of the Gold Coast region. The impounded reservoir is called Advancetown Lake.
The Wivenhoe Dam is a rock and earth-fill embankment dam with a concrete spillway across the Brisbane River in South East Queensland, Australia. The dam takes it names from the local Wivenhoe Pocket rural community. The dam wall is located about 80 kilometres (50 mi) by road from the centre of Brisbane. The primary purpose of the dam is the supply of potable water for the Brisbane and Ipswich regions. The dam also provides for flood mitigation control, hydroelectricity, and recreation. The impounded reservoir is called Lake Wivenhoe and the dam, the lake and a narrow strip of surrounding land forms a locality also called Lake Wivenhoe.
Blagdon Lake lies in a valley at the northern edge of the Mendip Hills, close to the village of Blagdon and approximately 10 miles (16 km) south of Bristol, England. The lake was created by Bristol Water, when it dammed the River Yeo, starting construction in 1898, to designs by Charles Hawksley, and completing this in 1905. The Wrington Vale Light Railway was constructed primarily to bring building materials for the lake.
The Clywedog Reservoir is a reservoir near Llanidloes, Wales on the head-waters of the River Severn. The construction of the reservoir was enabled by an Act of Parliament which asserted that "At certain times the flow of water in the river is inadequate ... unless that flow were regulated so as to ensure that at those times water in addition to the natural flow will flow down the river."
Geist Reservoir is a reservoir in the northeastern part of metropolitan Indianapolis, Indiana, United States. It was constructed in 1943 by damming Fall Creek to provide water for Indianapolis. Upon completion, Geist Reservoir was the second-largest man-made lake in Indiana, providing approximately 6,900,000,000 US gallons (2.6×1010 L; 5.7×109 imp gal) of water. The reservoir is located primarily in the northeast corner of Indianapolis and the southeast corner of Fishers, but small parts reach into the nearby towns of Lawrence, Fortville, and McCordsville.
Scammonden Reservoir is a water reservoir in West Yorkshire, England. Its water surface area when full is 42 hectares (0.16 sq mi). The level of the bellmouth overflow above sea level is 252 metres (827 ft). The reservoir holds 78,000,000,000 litres (1.7×1010 imp gal; 2.1×1010 US gal). Its length is 1.4 kilometres (0.9 mi).
The Splityard Creek Dam is a rock and earth-fill embankment dam with an un-gated spillway across the Pryde Creek that is located in the South East region of Queensland, Australia. The sole purpose of the dam is for the generation of hydroelectricity. The impounded reservoir is called the Splityard Creek Reservoir.
The Paradise Dam, also known as the Burnett River Dam, is a roller compacted concrete (RCC) gravity dam across the Burnett River, located between Coringa and Good Night northwest Biggenden and 80 kilometres (50 mi) southwest of Bundaberg in the Wide Bay-Burnett region of Queensland, Australia. Built for irrigation, the impoundment created by the dam is called Lake Paradise.
Irvinebank Dam (also known as Loudoun Weir) is a heritage-listed timber and concrete weir initially constructed around 1885 when a tin battery was built. The two creeks which form the basis of the dam at Irvinebank were known as Gibbs Creek and McDonald Creek, after the earliest prospectors. The battery was erected on the Gibbs Creek frontage, and the dam was constructed just below the junction of these two creeks and embraced an area, when full, of about 12 - 13 acres (53,000 m2) of water, with depths varying from about 15 feet (4.6 m) down to about two or three feet. The original capacity was 150 million litres (33,000,000 imp gal; 40,000,000 US gal).
The O'Shannassy Reservoir is an Australian man-made water supply dammed reservoir. The 3.123 GL water store across the O'Shannassy River is located near the locality of McMahons Creek, approximately 80 kilometres (50 mi) east of Melbourne, Victoria. The dam that creates the impoundment is called the O'Shannassy Dam.
The Glenmaggie Dam is a concrete block-foundation gravity dam with 14 radial arm gates across the Macalister River, located near Maffra, Central Gippsland, in the Australian state of Victoria. The dam's purpose includes irrigation, the generation of hydro-electric power, water supply and conservation. The impounded reservoir is called Lake Glenmaggie.