List of local nature reserves in Hertfordshire explained

Hertfordshire is a county in eastern England. It is bordered by Bedfordshire to the north, Cambridgeshire to the north-east, Essex to the east, Buckinghamshire to the west and Greater London to the south. The county town is Hertford. As of June 2014, the county has a population of 1,154,800[1] in an area of 634sqmi.[2]

Local nature reserves (LNRs) are designated by local authorities under the National Parks and Access to the Countryside Act 1949. The local authority must have legal control over the site, by owning or leasing it or having an agreement with the owner. LNRs are sites which have a special local interest either biologically or geologically, and local authorities have a duty to care for them. They can apply local bye-laws to manage and protect LNRs.[3] [4]

As of July 2015, forty-two LNRs in Hertfordshire have been notified to Natural England.[5] The largest site is Therfield Heath with 147.3ha. It has some of the richest chalk grassland in England, and it is also a Site of Special Scientific Interest (SSSI).[6] The smallest is Oxleys Wood in Hatfield, which has an area of only 1.2ha. This wood often floods, and it provides a habitat for a wide range of insects and birds.[7] Several other sites are also SSSIs, such as Croxley Common Moor and Sherrardspark Wood. The oldest LNR in Hertfordshire listed by Natural England is Hilfield Park Reservoir, declared in 1969,[8] and the newest Weston Hills in 2012.[9]

Key

Other classifications

Sites

SitePhotographAreaLocationMapDetails Other classificationsDescription
Albans Wood4.1haWatford
51.6941°N -0.3983°W
MapDetailsThe site is ancient semi-natural woodland. It is mainly oak with other trees such as beech, horse chestnut and sweet chestnut. Mammals include muntjac deer and noctule bats.[10]
Batford Springs3.5haSt Albans
51.8228°N -0.3386°W
MapDetailsThe main feature of the reserve is a number of small springs which are the source of chalk streams and ponds. The River Lea runs through the site, and there is grassland and a small wood.[11]
Cassiobury Park25.1haWatford
51.6594°N -0.4256°W
MapDetailsHMWT[12] This large park in Watford has a variety of habitats, including streams, ponds, watercress beds, wet grassland and wet woodland. The Grand Union Canal and River Gade run through the site.[13]
Cheshunt Park40haBroxbourne
51.7167°N -0.0458°W
MapDetailsThe history of the park goes back to Roman times. It is grass and woodland which has ancient hedgerows, wildflower meadows, a pond and an orchard which is cropped by traditional cattle breeds.[14] [15]
Chorleywood Common75.6haThree Rivers
51.6542°N -0.511°W
MapDetailsCAONB[16] Some 300 fungi, 70 plant species and fifty birds have been recorded on the common, which has habitats including acid heathland, neutral grassland, chalk meadows and secondary woodland.[17]
Chorleywood House Estate64.3haThree Rivers
51.6631°N -0.5021°W
MapDetailsThe River Chess runs through the estate, which has formal parkland surrounding a 200-year-old manor house, meadows and mature woodland.[18]
Colney Heath22.5haSt Albans
51.738°N -0.2606°W
MapDetailsThe site is acid grassland, which is unusual in Hertfordshire, and the River Colne runs through it. The heath is managed to maintain the grassland and the diversity of plant species along the river.[19]
13.2haWelwyn Hatfield
51.7835°N -0.1762°W
MapDetailsThe site has a variety of habitats including oak woodland, flower-rich meadows, wet fens, ditches and ponds. The meadows are grazed by livestock.[20]
Croxley Common Moor41.2haThree Rivers
51.6416°N -0.4363°W
MapDetailsSSSIThe site is mainly grass heathland with some ancient woodland and hazel coppice. Over 250 species of plants have been recorded.[21] [22]
Danesbury Park24.5haWelwyn Hatfield
51.8372°N -0.2176°W
MapDetailsThe site was formerly the park of Danesbury House, and it still has some large mature trees which are important to wildlife. Grassland areas, which are grazed by rare-breed cattle, have many varieties of flowering plants.[23]
Fisher's Field1.8haHertsmere
51.6579°N -0.3823°W
MapDetailsThe area was allotments during the Second World War. There are areas of woodland, with trees including oak, rowan and wild cherry, and a wildflower meadow and scrub with bramble, raspberry and willow herb. Animals include green woodpeckers, shrews and bees.[24]
Furzefield Wood and Lower Halfpenny7.4haHertsmere
51.7057°N -0.204°W
MapDetailsThe wood has been managed for coppicing for over 300 years. It now provides a habitat for birds, and fallen branches are important for invertebrates. Lower Halfpenny is a meadow which was once the route of an old drovers' track.[25]
Garston Park6.4haWatford
51.6912°N -0.3796°W
MapDetailsThe nature reserve has woodland which is mainly oak, ash and sycamore, and there are also areas of grassland and wetland. Mammals include muntjac deer and pipistrelle bats.[26]
Harebreaks Wood5.1haWatford
51.6808°N -0.4089°W
MapDetailsThe site is semi-natural woodland of oak, ash and cherry, which goes back to at least 1600. Birds include treecreeper and nuthatch, and there mammals such as muntjac deer and pipistrelle bats.[27] [28]
Hilfield Park Reservoir74.7haHertsmere
51.6491°N -0.3276°W
MapDetailsHMWT[29] This large reservoir is of national importance for pochards, tufted ducks and common tern. The margins have marshy areas with many breeding birds and marsh plants, such as reedmace and reed canarygrass.[30] [31]
Howe Dell4haWelwyn Hatfield
51.7572°N -0.2222°W
MapDetailsThe site is woodland which runs along both sides of a stream with steep sides. The main trees are hornbeam, oak and beech.[32]
Howe Grove Wood8.5haDacorum
51.7661°N -0.4668°W
MapDetailsThis site is dense woodland next to the A4147 road in Hemel Hempstead.[33]
Ivel Springs15.4haNorth Hertfordshire
51.9942°N -0.1939°W
MapDetailsThe site, which was a rubbish dump until the 1950s, has habitats including woodland, wetland and pasture. Its springs are the source of the River Ivel, and they have a wide variety of wildlife.[34]
4.4haWatford
51.6448°N -0.4059°W
MapDetailsThe site is mainly rough grassland, with some woodland and scrub. The River Colne runs along its southern boundary, with stream water crowfoot and yellow water lily growing in the water. A notable insect is Roesel's bush-crickets.[35]
Mardley Heath41.1haWelwyn Hatfield
51.8494°N -0.1925°W
MapDetailsIn the middle of the twentieth century the heath was used for gravel extraction, and it is now regenerating naturally. Oak and hornbeam woodland around the perimeter remains, and it is managed to enhance biodiversity.[36]
Marshalls Heath4haSt Albans
51.8207°N -0.3169°W
MapDetailsThe site is secondary woodland and scrub on acid heathland, but the many species recorded include forty on national lists of threatened species. It is one of the key Hertfordshire sites for butterflies and moths.[37]
Northaw Great Wood Country Park120.7haWelwyn Hatfield
51.7227°N -0.1411°W
MapDetailsSSSIThe park has one of the county's most extensive areas of ancient hornbeam woodland, with other trees including oak and silver birch. Glades, streams and springs add to the biodiversity.[38]
Norton Common25.7haNorth Hertfordshire
51.9848°N -0.2278°W
MapDetailsWoodland on this site has diverse wildlife including black squirrels, muntjac deer, and birds such as chiff chaffs and blackcaps. There are also meadows with wild flowers, and the Pix Brook, which is fed by mineral-rich springs.[39] [40]
Oughtonhead Common17.4haNorth Hertfordshire
51.9607°N -0.3015°W
MapDetailsThe common is part of the Chilterns Area of Outstanding Natural Beauty.[41] It has a wide variety of habitats, and the River Oughton flows along the edge. English Longhorn cattle graze pasture areas.[42]
Oxhey Woods100.2haThree Rivers
51.6241°N -0.408°W
MapDetailsThe site is mainly semi-natural woodland, and some areas date back to the end of the last Ice Age, the Younger Dryas, 11,500 years ago.[43] Plants include bluebells, anemones and violets and the rare wild service tree.[44]
Oxleys Wood1.2haWelwyn Hatfield
51.7509°N -0.2232°W
MapDetailsThe wood floods in wet weather, particularly the northern part, which has a pond. Tree species include oak, ash, elm and willow, and they provide a habitat for insects which provide food for birds.[45]
Prestwick Road Meadows2.8haThree Rivers
51.6176°N -0.388°W
MapDetailsThis site was formerly farm meadows. It has many insects and flowers include purple knapweed, yellow birdsfoot-trefoil and red clover. Old hedgerows still survive, and there is also a seasonal pond where frogs breed in the spring.[46]
Purwell Meadows8.6haNorth Hertfordshire
51.9538°N -0.2552°W
MapDetailsThe River Purwell runs through the meadows. Wildlife includes kingfishers, which are native to the area, and water voles.[47]
Rickmansworth Aquadrome41haThree Rivers
51.6331°N -0.4785°W
MapDetailsThere are two lakes and a diverse range of wildlife habitats.[48] The site has trees such as oaks and willows, birds including herons and moorhens, and small copper and gatekeeper butterflies.[49]
Sherrardspark Wood73.2haWelwyn Hatfield
51.8102°N -0.2172°W
MapDetailsSSSIMuch of this site is sessile oak woodland. Some trees are 250 years old, and diverse flora includes violet and broad-leaved helleborine, both of which are rare.[50]
Shrubhill Common9.8haDacorum
51.7539°N -0.502°W
MapDetailsCAONB[51] The common is woodland and scrub, together with two fields which are chalk grassland. There are over 100 species of wild flowers, and herbs such as marjoram and basil.[52]
Singlers Marsh6.3haWelwyn Hatfield
51.8354°N -0.2206°W
MapDetailsThe River Mimram runs along the edge of this site. It has grassland, which is managed by cattle grazing and cutting, and areas of willow scrub with some more mature trees.[53]
Stanborough Reedmarsh3.3haWelwyn Hatfield
51.8102°N -0.2172°W
MapDetailsHMWTThe site is wet willow woodland on the bank of the River Lea. It is important for water voles and birds such as reed and sedge warblers.[54] Water figwort, common meadow rue and water chickweed grow along the river bank.[55]
Stocker's Lake37.9haThree Rivers
51.6297°N -0.4887°W
MapDetailsHMWT[56] This is an old flooded gravel pit which has over sixty species of breeding birds, including shoveler and goldeneye ducks in nationally important numbers.[57]
Therfield Heath147.3haNorth Hertfordshire
52.0423°N -0.0549°W
MapDetailsSSSIThis is unimproved pasture and has some of the richest chalk grassland in England. Plants include the rare pasque flower, and there are insects such as the chalkhill blue butterfly.
Top Field and Cozens Grove6.1haBroxbourne
51.7416°N -0.0316°W
MapDetailsTop Field is a wildflower meadow which is mown to provide a habitat for small mammals, birds and insects. Cozens Grove is an ancient wood which has coppiced hornbeam and a medieval sunken ditch.[58] [59]
Watercress Wildlife Site1.2haSt Albans
51.7436°N -0.3328°W
MapDetailsThe site was formerly one of the many commercial watercress beds in the area.[60] It has a wide variety of wildlife, including water rails, kingfishers, little grebes and muntjac deer.[61]
Waterford Heath35.2haEast Hertfordshire
51.8181°N -0.0922°W
MapDetailsHMWT[62] The site is mainly grassland, with areas of scrub, wood plantation and semi-natural woodland. Breeding birds include skylarks and willow warblers, and there are reptiles such as slow worms and grass snakes.[63]
Weston Hills17haNorth Hertfordshire
51.8042°N -0.1819°W
MapDetailsChalk grassland is its most important ecological feature and one of the best examples in Hertfordshire; plants are very diverse because the harsh conditions do not allow vigorous species to become dominant.[64]
Wheathampstead5.9haSt Albans
51.8042°N -0.1819°W
MapDetailsThis L-shaped site has ash woodland, thorn scrub, mature hedgerows, and rough grassland. There are plants such as grass vetchling and bee orchid, birds including yellowhammer and whitethroat, and many butterflies.[65]
3.4haSt Albans
51.7619°N -0.3108°W
MapDetailsThis is ancient woodland which is semi-natural, and the main trees are oak and hornbeam. Other features are a seasonal pond and historic field boundaries of bank and ditch.[66]
7.5haThree Rivers
51.6345°N -0.4438°W
MapDetailsThe site borders the River Colne, and it has a variety of habitats including dry grassland, wet woodland, marsh and ditches. A World War II pillbox has been turned into a bat roost.[67]

See also

Notes

51.9°N -0.2°W

Notes and References

  1. Web site: Hertfordshire Local Information System. Resident Population. 29 July 2015. live. https://web.archive.org/web/20150715020127/http://www.hertslis.org/peoppla/pop/respop/. 15 July 2015.
  2. Web site: Area Measurements. Hertfordshire Local Information System. 10 February 2015. live. https://web.archive.org/web/20150210194001/http://www.hertslis.org/geog/areameas/. 10 February 2015.
  3. Web site: Protected or designated areas. 9 April 2013. Department for Environment, Food & Rural Affairs and Natural England. 29 July 2015. live. https://web.archive.org/web/20150504145328/https://www.gov.uk/protected-or-designated-areas. 4 May 2015.
  4. Web site: Local nature reserves: setting up and management. 2 October 2014. Department for Environment, Food & Rural Affairs and Natural England. 29 July 2015. live. https://web.archive.org/web/20150704111109/https://www.gov.uk/create-and-manage-local-nature-reserves. 4 July 2015.
  5. Web site: Local Nature Reserves: Search Results for Hertfordshire. Nature England. 29 July 2015. live. https://web.archive.org/web/20150210191033/http://www.lnr.naturalengland.org.uk/Special/lnr/lnr_results.asp?N=&C=21&Submit=Search. 10 February 2015.
  6. Web site: Therfield Heath citation. Sites of Special Scientific Interest. Natural England. 9 February 2015. live. https://web.archive.org/web/20160303235513/http://www.sssi.naturalengland.org.uk/citation/citation_photo/1001839.pdf. 3 March 2016.
  7. Web site: Oxleys Wood . Local Nature Reserves . Natural England . 14 March 2013 . 10 February 2015 . live . https://web.archive.org/web/20150210192643/http://www.lnr.naturalengland.org.uk/Special/lnr/lnr_details.asp?C=21&N=&ID=1617 . 10 February 2015 .
  8. Web site: Hilfield Park Reservoir. Local Nature Reserves. Natural England. 14 March 2013. 10 February 2015. live. https://web.archive.org/web/20150210192637/http://www.lnr.naturalengland.org.uk/Special/lnr/lnr_details.asp?C=21&N=&ID=217. 10 February 2015.
  9. Web site: Weston Hills. North Hertfordshire District Council. 24 April 2015. live. https://web.archive.org/web/20150724025350/http://www.north-herts.gov.uk/weston-hills. 24 July 2015.
  10. Web site: Albans Wood . Local Nature Reserves . Natural England . 13 March 2013 . 1 April 2015 . dead . https://web.archive.org/web/20150210192125/http://www.lnr.naturalengland.org.uk/Special/lnr/lnr_details.asp?C=21&N=&ID=1682 . 10 February 2015 .
  11. Web site: Batford Springs . Local Nature Reserves . Natural England . 13 March 2013 . 6 February 2015 . dead . https://web.archive.org/web/20150206200628/http://www.lnr.naturalengland.org.uk/Special/lnr/lnr_details.asp?C=21&N=&ID=26 . 6 February 2015 .
  12. Web site: Cassiobury Park LNR . Herts and Middlesex Wildlife Trust . 12 July 2016 . dead . https://web.archive.org/web/20160703092051/http://www.hertswildlifetrust.org.uk/reserves/cassiobury-park-lnr . 2016-07-03 .
  13. Web site: Cassiobury Park . Local Nature Reserves . Natural England . 6 October 2014 . 6 February 2015 . dead . https://web.archive.org/web/20150210192222/http://www.lnr.naturalengland.org.uk/Special/lnr/lnr_details.asp?C=0&N=cassiobury&ID=1683 . 10 February 2015 .
  14. Web site: Cheshunt Park. Hertfordshire Countryside Management Service. 18 February 2015. live. https://web.archive.org/web/20150208205416/http://www.hertslink.org/cms/getactive/placestovisit/cheshuntpark/. 8 February 2015.
  15. Web site: Cheshunt Park leaflet. Borough of Broxbourne. 18 February 2015. live. https://web.archive.org/web/20150218223115/http://www.hertslink.org/cms/content/15488274/16532563/cheshuntp.pdf. 18 February 2015.
  16. Web site: Chorleywood Common. Chilterns Conservation Board. 6 February 2015. live. https://web.archive.org/web/20150206213214/http://www.chilternsaonb.org/ccbmaps/367/137/chorleywood-common.html. 6 February 2015.
  17. Web site: Chorleywood Common. Local Nature Reserves. Natural England. 13 March 2013. 6 February 2015. live. https://web.archive.org/web/20150206222211/http://www.lnr.naturalengland.org.uk/Special/lnr/lnr_details.asp?C=21&N=&ID=1348. 6 February 2015.
  18. Web site: Chorleywood House Estate. Three Rivers District Council. 6 February 2015. dead. https://web.archive.org/web/20150311200951/http://www.threerivers.gov.uk/egcl-page/chorleywood-house-estate. 11 March 2015.
  19. Web site: Colney Heath. Local Nature Reserves. Natural England. 13 March 2013. 6 February 2015. live. https://web.archive.org/web/20141101213931/http://www.lnr.naturalengland.org.uk/Special/lnr/lnr_details.asp?C=21&N=&ID=604. 1 November 2014.
  20. Web site: The Commons. Welwyn Hatfield Borough Council. 22 March 2015. live. https://web.archive.org/web/20150107054700/http://www.welhat.gov.uk/article/1383/The-Commons. 7 January 2015.
  21. Web site: Croxley Common Moor citation . Sites of Special Scientific Interest . Natural England . 10 December 2014 . dead . https://web.archive.org/web/20160304045158/http://www.sssi.naturalengland.org.uk/citation/citation_photo/1000788.pdf . 4 March 2016 .
  22. Web site: Croxley Common Moor . Local Nature Reserves . Natural England . 13 March 2013 . 10 December 2014 . dead . https://web.archive.org/web/20140809035055/http://www.lnr.naturalengland.org.uk/Special/lnr/lnr_details.asp?C=0&N=&ID=589 . 9 August 2014 .
  23. Web site: Danesbury. Welwyn Hatfield Borough Council. 22 March 2015. live. https://web.archive.org/web/20150107054651/http://www.welhat.gov.uk/article/1380/Danesbury. 7 January 2015.
  24. Web site: Fisher's Field nature reserve. Hertsmere Borough Council. 2 April 2015. live. https://web.archive.org/web/20150210213319/http://www.hertsmere.gov.uk/Documents/08-Parks--Leisure/Parks--Open-Spaces/Park-facilities/Bushey/Fishers-Field-panel.pdf. 10 February 2015.
  25. Web site: Furzefield Wood. Hertfordshire County Council. 6 February 2015. live. https://web.archive.org/web/20150207011414/http://www.hertslink.org/cms/content/15488274/16532571/furzefieldw.pdf. 7 February 2015.
  26. Web site: Garston Park . Local Nature Reserves . Natural England . 6 October 2014 . 1 April 2015 . dead . https://web.archive.org/web/20150210191148/http://www.lnr.naturalengland.org.uk/Special/lnr/lnr_details.asp?C=21&N=&ID=1707 . 10 February 2015 .
  27. Web site: Harebreaks Wood . Watford Borough Council . 2 April 2015 . dead . https://web.archive.org/web/20150210233552/http://www.watford.gov.uk/ccm/content/leisure-and-community/nature-reserves-in-watford.en?page=4 . 10 February 2015 .
  28. Web site: Home page. Friends of Harebreaks Wood. 2 April 2015. live. https://web.archive.org/web/20140531181440/http://harebreakswood.org.uk/index.html. 31 May 2014.
  29. Web site: Hilfield Park Reservoir. Herts and Middlesex Wildlife Trust. 29 July 2015. dead. https://web.archive.org/web/20150705222612/http://www.hertswildlifetrust.org.uk/reserves/hilfield-park-reservoir. 5 July 2015. dmy-all.
  30. Web site: Hilfield Park Reservoir. Local Nature Reserves. Natural England. 14 March 2013. 29 July 2015. live. https://web.archive.org/web/20150929124719/http://www.lnr.naturalengland.org.uk/Special/lnr/lnr_details.asp?C=0&N=&ID=217. 29 September 2015.
  31. Web site: Hilfield Park Reservoir Wildlife Report 2013. Herts and Middlesex Wildlife Trust and Affinity Water. 29 July 2015. live. https://web.archive.org/web/20150929031018/http://www.hnhs.org/kcfinder/upload/files/Hilfield%20Park%202013.pdf. 29 September 2015.
  32. Web site: Howe Dell . Local Nature Reserves . Natural England . 17 March 2013 . 16 February 2015 . dead . https://web.archive.org/web/20150210191029/http://www.lnr.naturalengland.org.uk/Special/lnr/lnr_details.asp?C=21&N=&ID=1616 . 10 February 2015 .
  33. Web site: Howe Grove Wood . Local Nature Reserves . Natural England . 14 March 2013 . 26 February 2015 . dead . https://web.archive.org/web/20140809045540/http://www.lnr.naturalengland.org.uk/Special/lnr/lnr_details.asp?C=0&N=&ID=602 . 9 August 2014 .
  34. Web site: Ivel Springs. Local Nature Reserves. Natural England. 6 February 2015. live. https://web.archive.org/web/20150207024810/http://www.lnr.naturalengland.org.uk/Special/lnr/lnr_details.asp?C=21&N=&ID=1701. 7 February 2015.
  35. Web site: The Lairage Land. Local Nature Reserves. Natural England. 14 March 2013. 3 April 2015. live. https://web.archive.org/web/20150210192641/http://www.lnr.naturalengland.org.uk/Special/lnr/lnr_details.asp?C=21&N=&ID=1373. 10 February 2015.
  36. Web site: Mardley Heath. Welwyn Hatfield Borough Council. 6 February 2015. live. https://web.archive.org/web/20150107054644/http://www.welhat.gov.uk/article/1378/Mardley-Heath. 7 January 2015.
  37. Web site: Marshalls Heath. Local Nature Reserves. Natural England. 14 March 2013. 16 July 2015. live. https://web.archive.org/web/20150720205532/http://www.lnr.naturalengland.org.uk/Special/lnr/lnr_details.asp?C=0&N=&ID=287. 20 July 2015.
  38. Web site: Northaw Great Wood citation. Sites of Special Scientific Interest. Natural England. 23 December 2014. live. https://web.archive.org/web/20160303224158/http://www.sssi.naturalengland.org.uk/citation/citation_photo/1000830.pdf. 3 March 2016.
  39. Web site: Norton Common. Local Nature Reserves. Natural England. 14 March 2013. 6 February 2015. live. https://web.archive.org/web/20150207172731/http://www.lnr.naturalengland.org.uk/Special/lnr/lnr_details.asp?C=21&N=&ID=1694. 7 February 2015.
  40. Web site: Welcome to Norton Common. North Hertfordshire District Council. 6 February 2015. dead. https://web.archive.org/web/20120224152409/http://www.north-herts.gov.uk/norton_common_nature_reserve_leaflet.pdf. 24 February 2012.
  41. Web site: Oughtonhead Common. Chilterns Conservation Board. 8 February 2015. live. https://web.archive.org/web/20150208135231/http://www.chilternsaonb.org/ccbmaps/1419/137/oughtonhead-common.html. 8 February 2015.
  42. Web site: Oughtonhead Common. North Hertfordshire District Council. 8 February 2015. dead. https://web.archive.org/web/20150207185108/http://www.north-herts.gov.uk/index/leisure_and_culture/parks__countryside_and_open_spaces/nature_reserves/oughtonhead_common-2.htm. 7 February 2015.
  43. Web site: Local Nature Reserves. Three Rivers District Council. 25 September 2013. dead. https://web.archive.org/web/20130927080858/http://www.threerivers.gov.uk/Default.aspx/Web/LocalNatureReserves#oxheywoods. 27 September 2013.
  44. Web site: Oxhey Woods. Local Nature Reserves. Natural England. 25 September 2013. live. https://web.archive.org/web/20130927170044/http://www.lnr.naturalengland.org.uk/Special/lnr/lnr_details.asp?C=0&N=oxhey&ID=588. 27 September 2013.
  45. Web site: Oxleys Wood. Local Nature Reserves. Natural England. 14 March 2013. 16 February 2015. live. https://web.archive.org/web/20150210192643/http://www.lnr.naturalengland.org.uk/Special/lnr/lnr_details.asp?C=21&N=&ID=1617. 10 February 2015.
  46. Web site: Prestwick Road Meadows. Three Rivers District Council. 29 July 2015.
  47. Web site: Purwell Meadows. North Hertfordshire District Council. 7 March 2015. dead. https://web.archive.org/web/20150207183157/http://www.north-herts.gov.uk/index/leisure_and_culture/parks__countryside_and_open_spaces/nature_reserves/purwell_meadows.htm. 7 February 2015.
  48. Web site: Rickmansworth Aquadrome. Three Rivers District Council. 8 February 2015. dead. https://web.archive.org/web/20150306192408/http://www.threerivers.gov.uk/egcl-page/rickmansworth-aquadrome. 6 March 2015.
  49. Web site: Rickmansworth Aquadrome leaflet. Three Rivers District Council. 8 February 2015. live. https://web.archive.org/web/20150924025911/http://www.hertslink.org/cms/content/15488274/16532630/ricaquadromeleafletw.pdf. 24 September 2015.
  50. Web site: Sherrardspark Wood citation. Sites of Special Scientific Interest. Natural England. 8 February 2015. live. https://web.archive.org/web/20150924000935/http://www.english-nature.org.uk/citation/citation_photo/1000271.pdf. 24 September 2015.
  51. Web site: Shrub Hill Common. Chilterns Conservation Board. 26 February 2015. live. https://web.archive.org/web/20150227005338/http://www.chilternsaonb.org/ccbmaps/1470/137/shrub-hill-common.html. 27 February 2015.
  52. Web site: Shrubhill Common Nature Reserve. Dacorum Environmental Forum - Members Pages. 3 February 2015. dead. https://web.archive.org/web/20160303235752/http://www.dacenvforum.org.uk/mbr_shrubhill.php. 3 March 2016.
  53. Web site: Singlers Marsh. Welwyn Hatfield Borough Council. 22 March 2015. dead. https://web.archive.org/web/20150509004032/http://www.welhat.gov.uk/singlersmarsh. 9 May 2015. dmy-all.
  54. Web site: Stanborough Reedmarsh. Local Nature Reserves. Natural England. 14 March 2013. 16 February 2015. live. https://web.archive.org/web/20150210192605/http://www.lnr.naturalengland.org.uk/Special/lnr/lnr_details.asp?C=21&N=&ID=1618. 10 February 2015.
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