Knowledge (XXG)

Hanningfield Reservoir

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then dosed with a coagulant and flocculant. The water flows to three pulsators where organic substances are removed. It is then dosed with lime and pumped to the base of one of eight  gyrazurs – a granular contact mass reactor – where carbonate is removed. Water is then dosed with sulphuric acid
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Hanningfield Water Treatment Works was built adjacent to the reservoir. This treats and delivers 210 Ml/day of potable water to south Essex and Southend-on-Sea. The original plant comprised four circular accelerators, as the demand increased so vertical flow softening tanks were installed from 1970
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Large parts of the reservoir and surrounding countryside have been developed as a nature reserve. There are many footpaths in the woodland around the water where wildlife can be seen, and hides have been erected, with views of the visiting and resident birds. The public can use the reservoir for
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The raw water contains algae, organic matter, pesticides, and is too hard. These are treated and removed prior to distribution. The treatment entails clarification, carbonate removal, filtration and polishing. Raw water from the reservoir is treated with
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The Hanningfield scheme was a joint venture by the South Essex Waterworks Company and the Southend Waterworks Company. The reservoir was built in an area known as Sandon Valley, construction was started in 1951 and entailed flooding an area of
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seasonal fly fishing both from the bank and from boats, providing a fishing permit is bought in advance. The water is regularly stocked with rainbow trout; the heaviest fish ever caught, in 1998, weighed 24 lb 1 oz (10.9 kg).
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in 1957 at a cost of about £6m; the reservoir took 200 days to fill with water. The dam is 2,088 metres (6,850 ft) long. It is an earth dam with a core of puddled clay, the inner wall is concreted to mitigate erosion by wave action.
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Hanningfield is the 11th largest reservoir in England with an area of 3.52 km (870 acres). The reservoir has a limited natural water catchment area and is principally supplied with water abstracted from the
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There are two cafés at each end of the reservoir: the newer, opened in 2007, is next to the fishing lodge with a deck overlooking the water, and the other is at the Essex Wildlife Trust visitors' centre.
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at Langford about 14 km (8.7 mi) north east of Hanningfield. Water is pumped from Langford at up to 240 Ml/day through a 48-inch (1.2 m) diameter underground pipeline.
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where remaining particulates are removed. Water is then dosed with ozone and flows through granular activated carbon filters. After dosing with
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covering the ancient hamlet of Peasdown. Giffords Farm and Fremnells Manor were also demolished. The reservoir was completed by
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in 1970. In 1994 the Essex Water Company merged with Suffolk Water Company to form Essex and Suffolk Water.
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is a large 25,500-million-litre (900,000,000 cu ft) pumped storage reservoir located between
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The South Essex Waterworks Company and the Southend Waterworks Company merged to form the
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Essex and Suffolk Water. Essex Resilience Abberton to Hanningfield Transfer Main, 3.3.2.
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it is stored in a large contact tank. Prior to distribution the water is dosed with
1886: 1762: 1615: 1549: 1369: 1359: 1250: 1047: 1042: 1037: 1002: 972: 847: 646: 530: 365:. It has a surface area of 352 hectares (870 acres) and is owned and operated by 1891: 1699: 1610: 1450: 1445: 1082: 1027: 852: 497: 489: 448: 444: 1974: 1872: 1810: 1797: 1483: 1382: 1142: 799: 501: 358: 354: 104: 91: 1387: 1175: 1032: 748: 126: 736: 1749: 1559: 1271: 560:. Sites of Special Scientific Interest. Natural England. Archived from 477: 134: 146: 1541: 439: 362: 75: 496:. The chalk sludge lagoon has several unusual plants, including 372:
The reservoir is part of a 402.9 ha (996 acres) biological
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to reduce the dissolution of lead in the distribution system.
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25,500 million litres (900,000,000 cu ft)
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The reservoir has a nationally important population of
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to 1973. Further filters were commissioned in 1983.
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Archived from 7: 2011:Drinking water reservoirs in England 683: 681: 658: 656: 525: 523: 531:"Welcome to Hanningfield reservoir" 374:Site of Special Scientific Interest 271:Site of Special Scientific Interest 838:Blake's Wood & Lingwood Common 737:Hanningfield Reservoir photographs 429:Hanningfield Water Treatment Works 16:Reservoir in Essex, United Kingdom 14: 878:Cornmill Stream and Old River Lea 555:"Hanningfield Reservoir citation" 510:at the foot of the southern dam. 1672:Gunners Park and Shoebury Ranges 1123:West Thurrock Lagoon and Marshes 1068:Stour and Copperas Woods, Ramsey 384:. The reservoir is covered by a 52: 45: 29: 923:Garnetts Wood and Barnston Lays 587:"Map of Hanningfield Reservoir" 242: 234: 226: 218: 210: 202: 194: 1954:Billericay Rugby Football Club 1788:Thurrock Thameside Nature Park 823:Belcher's and Broadfield Woods 1: 1206:Little Oakley Channel Deposit 828:Benfleet and Southend Marshes 70: 35:Aerial view with dam at right 1649:Lion Creek and Lower Raypits 1161:The Cliff, Burnham-on-Crouch 1156:Clacton Cliffs and Foreshore 1083:Thrift Wood, Woodham Ferrers 963:Hangman's Wood and Deneholes 376:. The site is also owned by 1768:Chafford Gorges Nature Park 1355:Thorndon Countryside Centre 943:Great Wood and Dodd's Grove 873:The Coppice, Kelvedon Hatch 504:, and there is a rare moss 223:16.76 m (55.0 ft) 199:3.25 km (2.02 mi) 2027: 1720:John Weston Nature Reserve 1128:West Wood, Little Sampford 1098:Turnford and Cheshunt Pits 883:Crouch and Roach Estuaries 342:not a well-defined measure 215:7.62 m (25.0 ft) 1902:Queen's Park Country Park 1108:Vange and Fobbing Marshes 1023:Mucking Flats and Marshes 339: 335: 321:402.9 ha (996 acres) 276: 269: 40: 28: 1489:Lexden Gathering Grounds 1088:Thundersley Great Common 1013:Little Hallingbury Marsh 953:Hales and Shadwell Woods 938:Grays Thurrock Chalk Pit 716:"Hanningfield Reservoir" 1436:Sandylay and Moat Woods 507:Brachythecium mildeanum 378:Essex and Suffolk Water 367:Essex and Suffolk Water 247:55 m (180 ft) 239:6 mi (9.7 km) 207:352 ha (870 acres) 171:Essex and Suffolk Water 1421:Little Waltham Meadows 1416:Hanningfield Reservoir 1337:Brookes Nature Reserve 1319:Langdon Nature Reserve 968:Hanningfield Reservoir 664:"Water Supply History" 611:. Essex Wildlife Trust 351:Hanningfield Reservoir 60:Hanningfield Reservoir 24:Hanningfield Reservoir 1933:The Billericay School 1928:Mayflower High School 1921:Schools in Billericay 1532:Roding Valley Meadows 1241:Purfleet Road, Aveley 1133:Woodham Walter Common 1053:Roding Valley Meadows 998:Holland Haven Marshes 742:31 March 2012 at the 690:"Suez Water Handbook" 459:Nature and recreation 1996:Essex Wildlife Trust 1959:Billericay Town F.C. 1816:Sawbridgeworth Marsh 1303:Essex Wildlife Trust 1196:Holland-on-Sea Cliff 1008:Inner Thames Marshes 843:Bovingdon Hall Woods 643:"Hanningfield Facts" 386:Bird Sanctuary Order 382:Essex Wildlife Trust 105:51.65833°N 0.50417°E 2001:Reservoirs in Essex 1968:Radio in Billericay 1947:Sport in Billericay 1601:Bradwell Shell Bank 1261:Wivenhoe Gravel Pit 1236:Purfleet Chalk Pits 1151:Ardleigh Gravel Pit 1103:Upper Colne Marshes 722:on 12 January 2013. 423:Essex Water Company 101: /  1710:Great Holland Pits 1578:Ingrebourne Valley 1494:Roman River Valley 1469:Abberton Reservoir 1221:Marks Tey Brickpit 1181:Goldsands Road Pit 833:Blackwater Estuary 808:Abberton Reservoir 666:. 17 November 2015 415:W. & C. French 411:South Hanningfield 1983: 1982: 1839: 1838: 1606:Chigborough Lakes 1499:Sergeants Orchard 1474:Abbotts Hall Farm 1441:Shotgate Thickets 1269: 1268: 1191:Harwich Foreshore 1063:Sandbeach Meadows 983:High Wood, Dunmow 858:Cattawade Marshes 348: 347: 244:Surface elevation 110:51.65833; 0.50417 2018: 1938:St John's School 1866: 1859: 1852: 1843: 1758:Grove House Wood 1735:Skipper's Island 1626:Stow Maries Halt 1479:Fingringhoe Wick 1296: 1289: 1282: 1273: 1231:Newney Green Pit 928:Garrold's Meadow 888:Curtismill Green 818:Basildon Meadows 785: 778: 771: 762: 724: 723: 711: 705: 704: 702: 700: 685: 676: 675: 673: 671: 660: 651: 650: 649:on 25 July 2008. 639: 630: 627: 621: 620: 618: 616: 605: 599: 598: 596: 594: 583: 577: 576: 574: 572: 566: 559: 551: 542: 541: 539: 537: 527: 403:River Blackwater 340:Shore length is 305: 281: 148: 147:Primary outflows 136: 116: 115: 113: 112: 111: 106: 102: 99: 98: 97: 94: 84: 56: 55: 49: 33: 21: 2026: 2025: 2021: 2020: 2019: 2017: 2016: 2015: 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Retrieved 505: 490:tufted ducks 475: 466: 462: 445:sand filters 436: 432: 420: 407: 395: 371: 350: 349: 327:Notification 236:Shore length 228:Water volume 204:Surface area 18: 1912:South Green 1892:Norsey Wood 1880:Open spaces 1700:Colne Point 1611:Maldon Wick 1451:Woodham Fen 1446:Thrift Wood 1058:Roman River 1028:Norsey Wood 853:Canvey Wick 699:9 September 670:8 September 536:8 September 498:golden dock 392:Description 108: / 83:Coordinates 1990:Categories 1975:Phoenix FM 1907:Sun Corner 1873:Billericay 1811:Rushy Mead 1798:Uttlesford 1484:Iron Latch 1461:Colchester 1398:Chelmsford 1383:Pound Wood 1143:Geological 800:Biological 514:References 502:marsh dock 449:chloramine 359:Chelmsford 355:Billericay 313:Biological 220:Max. depth 196:Max. width 93:51°39′30″N 1831:West Wood 1388:Tile Wood 1347:Brentwood 1329:Braintree 1246:River Ter 1176:Globe Pit 1033:Nunn Wood 755:Magic Map 303:TQ 730980 127:reservoir 96:0°30′15″E 1750:Thurrock 1740:Wrabness 1725:The Naze 1687:Tendring 1667:Belfairs 1641:Rochford 1560:Havering 1311:Basildon 1226:The Naze 1201:Lion Pit 918:Foulness 740:Archived 615:1 August 593:1 August 571:1 August 494:pintails 482:pochards 472:Wildlife 310:Interest 287:Location 152:210 Ml/d 140:240 Ml/d 72:Location 478:gadwall 257:Islands 179:1951-57 1588:Maldon 1542:Harlow 1171:Dengie 903:Dengie 688:Suez. 565:(PDF) 558:(PDF) 440:ozone 363:Essex 291:Essex 176:Built 158:Basin 76:Essex 701:2021 694:Suez 672:2021 617:2016 595:2016 573:2016 538:2021 500:and 492:and 486:teal 401:and 357:and 331:1985 318:Area 261:None 187:1957 122:Type 361:in 1992:: 692:. 680:^ 655:^ 634:^ 546:^ 522:^ 488:, 484:, 388:. 369:. 1865:e 1858:t 1851:v 1295:e 1288:t 1281:v 784:e 777:t 770:v 713:* 703:. 674:. 619:. 597:. 575:. 540:. 344:.

Index


Hanningfield Reservoir is located in Essex
Essex
51°39′30″N 0°30′15″E / 51.65833°N 0.50417°E / 51.65833; 0.50417
Type
reservoir
Primary inflows
Primary outflows
Basin
Islands
Site of Special Scientific Interest

Location
Grid reference
TQ 730980
Notification
not a well-defined measure
Billericay
Chelmsford
Essex
Essex and Suffolk Water
Site of Special Scientific Interest
Essex and Suffolk Water
Essex Wildlife Trust
Bird Sanctuary Order
River Chelmer
River Blackwater
South Hanningfield
W. & C. French
Essex Water Company

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