List of local nature reserves in Hertfordshire

{{Short description|none}}

File:The Aquadrome, Bury Lake - geograph.org.uk - 1588838.jpg|300px]]

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{{cite web|publisher=Hertfordshire Local Information System|url=http://www.hertslis.org/peoppla/pop/respop/|title=Resident Population|access-date=29 July 2015|url-status=live|archive-url=https://web.archive.org/web/20150715020127/http://www.hertslis.org/peoppla/pop/respop/|archive-date=15 July 2015}} in an area of {{convert|634|sqmi|km2}}.{{cite web|url=http://www.hertslis.org/geog/areameas/|publisher=Hertfordshire Local Information System|title=Area Measurements|access-date=10 February 2015|url-status=live|archive-url=https://web.archive.org/web/20150210194001/http://www.hertslis.org/geog/areameas/|archive-date=10 February 2015}}

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.{{cite web|url=https://www.gov.uk/protected-or-designated-areas|title=Protected or designated areas|date=9 April 2013|publisher=Department for Environment, Food & Rural Affairs and Natural England|access-date=29 July 2015|url-status=live|archive-url=https://web.archive.org/web/20150504145328/https://www.gov.uk/protected-or-designated-areas|archive-date=4 May 2015}}{{cite web|url=https://www.gov.uk/create-and-manage-local-nature-reserves|title=Local nature reserves: setting up and management|date=2 October 2014|publisher=Department for Environment, Food & Rural Affairs and Natural England|access-date=29 July 2015|url-status=live|archive-url=https://web.archive.org/web/20150704111109/https://www.gov.uk/create-and-manage-local-nature-reserves|archive-date=4 July 2015}}

As of July 2015, forty-two LNRs in Hertfordshire have been notified to Natural England.{{cite web|url=http://www.lnr.naturalengland.org.uk/Special/lnr/lnr_results.asp?N=&C=21&Submit=Search|publisher=Nature England|title=Local Nature Reserves: Search Results for Hertfordshire|access-date=29 July 2015|url-status=live|archive-url=https://web.archive.org/web/20150210191033/http://www.lnr.naturalengland.org.uk/Special/lnr/lnr_results.asp?N=&C=21&Submit=Search|archive-date=10 February 2015}} The largest site is Therfield Heath with {{convert| 147.3|ha|acre}}. It has some of the richest chalk grassland in England, and it is also a Site of Special Scientific Interest (SSSI).{{cite web|url=http://www.sssi.naturalengland.org.uk/citation/citation_photo/1001839.pdf|title=Therfield Heath citation|series=Sites of Special Scientific Interest|publisher=Natural England|access-date=9 February 2015|url-status=live|archive-url=https://web.archive.org/web/20160303235513/http://www.sssi.naturalengland.org.uk/citation/citation_photo/1001839.pdf|archive-date=3 March 2016}} The smallest is Oxleys Wood in Hatfield, which has an area of only {{convert| 1.2|ha|acre}}. This wood often floods, and it provides a habitat for a wide range of insects and birds.{{cite web |url=http://www.lnr.naturalengland.org.uk/Special/lnr/lnr_details.asp?C=21&N=&ID=1617 |title=Oxleys Wood |series=Local Nature Reserves |publisher=Natural England |date=14 March 2013 |access-date=10 February 2015 |url-status=live |archive-url=https://web.archive.org/web/20150210192643/http://www.lnr.naturalengland.org.uk/Special/lnr/lnr_details.asp?C=21&N=&ID=1617 |archive-date=10 February 2015 }} 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,{{cite web|url= http://www.lnr.naturalengland.org.uk/Special/lnr/lnr_details.asp?C=21&N=&ID=217|title= Hilfield Park Reservoir|series= Local Nature Reserves|publisher= Natural England|date= 14 March 2013|access-date= 10 February 2015|url-status= live|archive-url= https://web.archive.org/web/20150210192637/http://www.lnr.naturalengland.org.uk/Special/lnr/lnr_details.asp?C=21&N=&ID=217|archive-date= 10 February 2015}} and the newest Weston Hills in 2012.{{cite web|url=http://www.north-herts.gov.uk/weston-hills|title=Weston Hills|publisher=North Hertfordshire District Council|access-date=24 April 2015|url-status=live|archive-url=https://web.archive.org/web/20150724025350/http://www.north-herts.gov.uk/weston-hills|archive-date=24 July 2015}}

{{geoGroup}}

Key

=Other classifications=

Sites

class="wikitable sortable plainrowheaders"

!scope="col" | Site

!scope="col" class="unsortable" | Photograph

!scope="col" data-sort-type="number"| Area{{efn|The area is taken from the Natural England map of each site. (Click on the identify icon (i) in the "Feature Tools" and then click on the site.){{cite web|url=http://www.lnr.naturalengland.org.uk/Special/lnr/lnr_results.asp?N=&C=21&Submit=Search|title=Local Nature Reserves: Search Results for Hertfordshire|publisher=Natural England|access-date=5 February 2015|url-status=live|archive-url=https://web.archive.org/web/20150210191033/http://www.lnr.naturalengland.org.uk/Special/lnr/lnr_results.asp?N=&C=21&Submit=Search|archive-date=10 February 2015}} }}

!scope="col" | Location{{efn|The location is taken from the Natural England details page for the site.}}

!scope="col" class="unsortable" | Map{{efn|The maps are on the Natural England database of Local Nature Reserves.}}

!scope="col" class="unsortable" | Details{{efn|Details are on the pages on each site in the Natural England database of Local Nature Reserves.}}

!scope="col" |Other classifications

!scope="col" class="unsortable" | Description

scope="row"|Albans Wood

|100px

|{{convert|4.1 |ha|acre |sortable=on}}

| Watford
{{coord| 51.6941 | -0.3983 |type:landmark_region:GB|name= Albans Wood }}
{{gbmappingsmall|TL 108 007 }}

|[http://magic.defra.gov.uk/MagicMap.aspx?startTopic=Designations&activelayer=lnrIndex&query=REF_CODE%3D%271475791%27 Map]

|[https://web.archive.org/web/20150210192125/http://www.lnr.naturalengland.org.uk/Special/lnr/lnr_details.asp?C=21&N=&ID=1682 Details]

|

|The 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.{{cite web|url=http://www.lnr.naturalengland.org.uk/Special/lnr/lnr_details.asp?C=21&N=&ID=1682 |title=Albans Wood |series=Local Nature Reserves |publisher=Natural England |date=13 March 2013 |access-date=1 April 2015 |url-status=dead |archive-url=https://web.archive.org/web/20150210192125/http://www.lnr.naturalengland.org.uk/Special/lnr/lnr_details.asp?C=21&N=&ID=1682 |archive-date=10 February 2015 }}

scope="row"|Batford Springs

|File:River Lea Waterfall at Batford - geograph.org.uk - 190902.jpg

|{{convert| 3.5|ha|acre |sortable=on}}

|St Albans
{{coord| 51.8228 | -0.3386 |type:landmark_region:GB|name= Batford Springs }}
{{gbmappingsmall|TL 146 151 }}

|[http://magic.defra.gov.uk/MagicMap.aspx?startTopic=Designations&activelayer=lnrIndex&query=REF_CODE%3D%271008765%27 Map]

|[https://web.archive.org/web/20150206200628/http://www.lnr.naturalengland.org.uk/Special/lnr/lnr_details.asp?C=21&N=&ID=26 Details]

|

|The 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.{{cite web|url=http://www.lnr.naturalengland.org.uk/Special/lnr/lnr_details.asp?C=21&N=&ID=26 |title=Batford Springs |series=Local Nature Reserves |publisher=Natural England |date=13 March 2013 |access-date=6 February 2015 |url-status=dead |archive-url=https://web.archive.org/web/20150206200628/http://www.lnr.naturalengland.org.uk/Special/lnr/lnr_details.asp?C=21&N=&ID=26 |archive-date= 6 February 2015 }}

scope="row"|Cassiobury Park

|File:Daffodils, Cassiobury Park, Watford.jpg

|{{convert|25.1 |ha|acre |sortable=on}}

|Watford
{{coord| 51.6594 | -0.4256 |type:landmark_region:GB|name= Cassiobury Park }}
{{gbmappingsmall| TQ 090 968}}

|[http://magic.defra.gov.uk/MagicMap.aspx?startTopic=Designations&activelayer=lnrIndex&query=REF_CODE%3D%271481535%27 Map]

|[http://www.lnr.naturalengland.org.uk/Special/lnr/lnr_details.asp?C=21&N=&ID=1683 Details]

|HMWT{{cite web |url= http://www.hertswildlifetrust.org.uk/reserves/cassiobury-park-lnr |title= Cassiobury Park LNR |publisher= Herts and Middlesex Wildlife Trust |access-date= 12 July 2016 |url-status= dead |archive-url= https://web.archive.org/web/20160703092051/http://www.hertswildlifetrust.org.uk/reserves/cassiobury-park-lnr |archive-date= 2016-07-03 }}

| 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.{{cite web|url=http://www.lnr.naturalengland.org.uk/Special/lnr/lnr_details.asp?C=0&N=cassiobury&ID=1683 |title=Cassiobury Park |series=Local Nature Reserves |publisher=Natural England |date=6 October 2014 |access-date=6 February 2015 |url-status=dead |archive-url=https://web.archive.org/web/20150210192222/http://www.lnr.naturalengland.org.uk/Special/lnr/lnr_details.asp?C=0&N=cassiobury&ID=1683 |archive-date=10 February 2015 }}

scope="row"|Cheshunt Park{{efn|This site is wrongly named Chestnut Park on the details page and correctly Cheshunt Park on the map}}

|100px

|{{convert|40.0 |ha|acre |sortable=on}}

|Broxbourne
{{coord| 51.7167 | -0.04575 |type:landmark_region:GB|name= Cheshunt Park }}
{{gbmappingsmall|TL 351 038 }}

|[http://magic.defra.gov.uk/MagicMap.aspx?startTopic=Designations&activelayer=lnrIndex&query=REF_CODE%3D%271477741%27 Map]

|[https://web.archive.org/web/20150210192721/http://www.lnr.naturalengland.org.uk/Special/lnr/lnr_details.asp?C=21&N=&ID=1771 Details]

|

|The 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.{{cite web|url=http://www.hertslink.org/cms/getactive/placestovisit/cheshuntpark/|title=Cheshunt Park|publisher=Hertfordshire Countryside Management Service|access-date=18 February 2015|url-status=live|archive-url=https://web.archive.org/web/20150208205416/http://www.hertslink.org/cms/getactive/placestovisit/cheshuntpark/|archive-date=8 February 2015}}{{cite web|url=http://www.hertslink.org/cms/content/15488274/16532563/cheshuntp.pdf|publisher=Borough of Broxbourne|title=Cheshunt Park leaflet|access-date=18 February 2015|url-status=live|archive-url=https://web.archive.org/web/20150218223115/http://www.hertslink.org/cms/content/15488274/16532563/cheshuntp.pdf|archive-date=18 February 2015}}

scope="row"|Chorleywood Common

|File:Chorleywood Common1.jpg

|{{convert|75.6 |ha|acre |sortable=on}}

|Three Rivers
{{coord| 51.6542 | -0.5110 |type:landmark_region:GB|name= Chorleywood Common}}
{{gbmappingsmall|TQ 031 961 }}

|[http://magic.defra.gov.uk/MagicMap.aspx?startTopic=Designations&activelayer=lnrIndex&query=REF_CODE%3D%271083005%27 Map]

|[http://www.lnr.naturalengland.org.uk/Special/lnr/lnr_details.asp?C=21&N=&ID=1348 Details]

|CAONB{{cite web|url=http://www.chilternsaonb.org/ccbmaps/367/137/chorleywood-common.html|title=Chorleywood Common|publisher=Chilterns Conservation Board|access-date=6 February 2015|url-status=live|archive-url=https://web.archive.org/web/20150206213214/http://www.chilternsaonb.org/ccbmaps/367/137/chorleywood-common.html|archive-date=6 February 2015}}

|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.{{cite web|url=http://www.lnr.naturalengland.org.uk/Special/lnr/lnr_details.asp?C=21&N=&ID=1348|title=Chorleywood Common|series=Local Nature Reserves|publisher=Natural England|date=13 March 2013|access-date=6 February 2015|url-status=live|archive-url=https://web.archive.org/web/20150206222211/http://www.lnr.naturalengland.org.uk/Special/lnr/lnr_details.asp?C=21&N=&ID=1348|archive-date=6 February 2015}}

scope="row"|Chorleywood House Estate

|File:Chorleywood House and part of Chorleywood House Estate - geograph.org.uk - 1765085.jpg

|{{convert|64.3 |ha|acre |sortable=on}}

|Three Rivers
{{coord| 51.6631 | -0.5021 |type:landmark_region:GB|name= Chorleywood House Estate }}
{{gbmappingsmall|TQ 037 971 }}

|[http://magic.defra.gov.uk/MagicMap.aspx?startTopic=Designations&activelayer=lnrIndex&query=REF_CODE%3D%271451123%27 Map]

|[http://www.lnr.naturalengland.org.uk/Special/lnr/lnr_details.asp?C=21&N=&ID=1551 Details]

|

|The River Chess runs through the estate, which has formal parkland surrounding a 200-year-old manor house, meadows and mature woodland.{{cite web|url=http://www.threerivers.gov.uk/egcl-page/chorleywood-house-estate|title=Chorleywood House Estate|publisher=Three Rivers District Council|access-date=6 February 2015|url-status=dead|archive-url=https://web.archive.org/web/20150311200951/http://www.threerivers.gov.uk/egcl-page/chorleywood-house-estate|archive-date=11 March 2015}}

scope="row"|Colney Heath

|File:River Colne in Colney Heath Local Nature Reserve 1.JPG

|{{convert|22.5 |ha|acre |sortable=on}}

|St Albans
{{coord| 51.7380 | -0.2606|type:landmark_region:GB|name= Colney Heath }}
{{gbmappingsmall|TL 202 058 }}

|[http://magic.defra.gov.uk/MagicMap.aspx?startTopic=Designations&activelayer=lnrIndex&query=REF_CODE%3D%271009336%27 Map]

|[http://www.lnr.naturalengland.org.uk/Special/lnr/lnr_details.asp?C=21&N=&ID=604 Details]

|

|The 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.{{cite web|url=http://www.lnr.naturalengland.org.uk/Special/lnr/lnr_details.asp?C=21&N=&ID=604|title=Colney Heath|series=Local Nature Reserves|publisher=Natural England|date=13 March 2013|access-date=6 February 2015|url-status=live|archive-url=https://web.archive.org/web/20141101213931/http://www.lnr.naturalengland.org.uk/Special/lnr/lnr_details.asp?C=21&N=&ID=604|archive-date=1 November 2014}}

scope="row"|{{sortname|The| Commons|The Commons, Welwyn Garden City|The Commons}}

|100px

|{{convert|13.2 |ha|acre |sortable=on}}

|Welwyn Hatfield
{{coord| 51.7835 | -0.1762 |type:landmark_region:GB|name= The Commons, Welwyn Garden City }}
{{gbmappingsmall|TL 259 110 }}

|[http://magic.defra.gov.uk/MagicMap.aspx?startTopic=Designations&activelayer=lnrIndex&query=REF_CODE%3D%271009335%27 Map]

|[http://www.lnr.naturalengland.org.uk/Special/lnr/lnr_details.asp?C=21&N=&ID=603 Details]

|

|The site has a variety of habitats including oak woodland, flower-rich meadows, wet fens, ditches and ponds. The meadows are grazed by livestock.{{cite web|url=http://www.welhat.gov.uk/article/1383/The-Commons|title=The Commons|publisher=Welwyn Hatfield Borough Council|access-date=22 March 2015|url-status=live|archive-url=https://web.archive.org/web/20150107054700/http://www.welhat.gov.uk/article/1383/The-Commons|archive-date=7 January 2015}}

scope="row"|Croxley Common Moor

|File:River Gade with Croxley Common Moor on the right.JPG

|{{convert|41.2 |ha|acre |sortable=on}}

|Three Rivers
{{coord| 51.6416 | -0.4363 |type:landmark_region:GB|name= Croxley Common Moor}}
{{gbmappingsmall|TQ 083 948 }}

|[http://magic.defra.gov.uk/MagicMap.aspx?startTopic=Designations&activelayer=lnrIndex&query=REF_CODE%3D%271009321%27 Map]

|[http://www.lnr.naturalengland.org.uk/Special/lnr/lnr_details.asp?C=21&N=&ID=589 Details]

|SSSI

|The site is mainly grass heathland with some ancient woodland and hazel coppice. Over 250 species of plants have been recorded.{{cite web|url=http://www.sssi.naturalengland.org.uk/citation/citation_photo/1000788.pdf |title=Croxley Common Moor citation |series=Sites of Special Scientific Interest |publisher=Natural England |access-date=10 December 2014 |url-status=dead |archive-url=https://web.archive.org/web/20160304045158/http://www.sssi.naturalengland.org.uk/citation/citation_photo/1000788.pdf |archive-date= 4 March 2016 }}{{cite web|url=http://www.lnr.naturalengland.org.uk/Special/lnr/lnr_details.asp?C=0&N=&ID=589 |title=Croxley Common Moor |series=Local Nature Reserves |publisher=Natural England |date=13 March 2013 |access-date=10 December 2014 |url-status=dead |archive-url=https://web.archive.org/web/20140809035055/http://www.lnr.naturalengland.org.uk/Special/lnr/lnr_details.asp?C=0&N=&ID=589 |archive-date= 9 August 2014 }}

scope="row"|Danesbury Park

|100px

|{{convert| 24.5|ha|acre |sortable=on}}

|Welwyn Hatfield
{{coord| 51.8372 | -0.2176 |type:landmark_region:GB|name= Danesbury Park }}
{{gbmappingsmall|TL 229 169 }}

|[http://magic.defra.gov.uk/MagicMap.aspx?startTopic=Designations&activelayer=lnrIndex&query=REF_CODE%3D%271009337%27 Map]

|[https://web.archive.org/web/20150210192432/http://www.lnr.naturalengland.org.uk/Special/lnr/lnr_details.asp?C=21&N=&ID=605 Details]

|

|The 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.{{cite web|url=http://www.welhat.gov.uk/article/1380/Danesbury|title=Danesbury|publisher=Welwyn Hatfield Borough Council|access-date=22 March 2015|url-status=live|archive-url=https://web.archive.org/web/20150107054651/http://www.welhat.gov.uk/article/1380/Danesbury|archive-date=7 January 2015}}

scope="row"|Fisher's Field

|100px

|{{convert| 1.8|ha|acre |sortable=on}}

|Hertsmere
{{coord|51.6579 | -0.3823 |type:landmark_region:GB|name= Fisher's Field }}
{{gbmappingsmall|TQ 120 967 }}

|[http://magic.defra.gov.uk/MagicMap.aspx?startTopic=Designations&activelayer=lnrIndex&query=REF_CODE%3D%271009873%27 Map]

|[http://www.lnr.naturalengland.org.uk/Special/lnr/lnr_details.asp?C=21&N=&ID=1357 Details]

|

|The 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.{{cite web|url=http://www.hertsmere.gov.uk/Documents/08-Parks--Leisure/Parks--Open-Spaces/Park-facilities/Bushey/Fishers-Field-panel.pdf|title=Fisher's Field nature reserve|publisher=Hertsmere Borough Council|access-date=2 April 2015|url-status=live|archive-url=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|archive-date=10 February 2015}}

scope="row"|Furzefield Wood and Lower Halfpenny

|File:Pigeon in Furzefield Wood - geograph.org.uk - 1417896.jpg

|{{convert| 7.4|ha|acre |sortable=on}}

|Hertsmere
{{coord| 51.7057 | -0.2040 |type:landmark_region:GB|name= Furzefield Wood and Lower Halfpenny }}
{{gbmappingsmall|TL 242 023 }}

|[http://magic.defra.gov.uk/MagicMap.aspx?startTopic=Designations&activelayer=lnrIndex&query=REF_CODE%3D%271009874%27 Map]

|[https://web.archive.org/web/20150207004611/http://www.lnr.naturalengland.org.uk/Special/lnr/lnr_details.asp?C=21&N=&ID=1359 Details]

|

|The 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.{{cite web|url=http://www.hertslink.org/cms/content/15488274/16532571/furzefieldw.pdf|title=Furzefield Wood|publisher=Hertfordshire County Council|access-date=6 February 2015|url-status=live|archive-url=https://web.archive.org/web/20150207011414/http://www.hertslink.org/cms/content/15488274/16532571/furzefieldw.pdf|archive-date=7 February 2015}}

scope="row"|Garston Park

|100px

|{{convert|6.4 |ha|acre |sortable=on}}

|Watford
{{coord| 51.6912 | -0.3796 |type:landmark_region:GB|name= Garston Park }}
{{gbmappingsmall|TL 121 004 }}

|[http://magic.defra.gov.uk/MagicMap.aspx?startTopic=Designations&activelayer=lnrIndex&query=REF_CODE%3D%271481536%27 Map]

|[https://web.archive.org/web/20150210191148/http://www.lnr.naturalengland.org.uk/Special/lnr/lnr_details.asp?C=21&N=&ID=1707 Details]

|

|The 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.{{cite web|url=http://www.lnr.naturalengland.org.uk/Special/lnr/lnr_details.asp?C=21&N=&ID=1707 |title=Garston Park |series=Local Nature Reserves |publisher=Natural England |date=6 October 2014 |access-date=1 April 2015 |url-status=dead |archive-url=https://web.archive.org/web/20150210191148/http://www.lnr.naturalengland.org.uk/Special/lnr/lnr_details.asp?C=21&N=&ID=1707 |archive-date=10 February 2015 }}

scope="row"|Harebreaks Wood

|100px

|{{convert| 5.1|ha|acre |sortable=on}}

|Watford
{{coord|51.6808 | -0.4089 |type:landmark_region:GB|name= Harebreaks Wood }}
{{gbmappingsmall| TQ 101 992 }}

|[http://magic.defra.gov.uk/MagicMap.aspx?startTopic=Designations&activelayer=lnrIndex&query=REF_CODE%3D%271083009%27 Map]

|[https://web.archive.org/web/20150210190704/http://www.lnr.naturalengland.org.uk/Special/lnr/lnr_details.asp?C=21&N=&ID=1365 Details]

|

|The 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.{{cite web|url=http://www.watford.gov.uk/ccm/content/leisure-and-community/nature-reserves-in-watford.en?page=4 |title=Harebreaks Wood |publisher=Watford Borough Council |access-date=2 April 2015 |url-status=dead |archive-url=https://web.archive.org/web/20150210233552/http://www.watford.gov.uk/ccm/content/leisure-and-community/nature-reserves-in-watford.en?page=4 |archive-date=10 February 2015 }}{{cite web|url=http://www.harebreakswood.org.uk/index.html|title=Home page|publisher=Friends of Harebreaks Wood|access-date=2 April 2015|url-status=live|archive-url=https://web.archive.org/web/20140531181440/http://harebreakswood.org.uk/index.html|archive-date=31 May 2014}}

scope="row"|Hilfield Park Reservoir{{efn|Access to Hilfield Park Reservoir is restricted to members of the Herts and Middlesex Wildlife Trust. It is the only LNR in Hertfordshire which is not open to the public. }}

|100px

|{{convert|74.7 |ha|acre |sortable=on}}

|Hertsmere
{{coord| 51.6491 | -0.3276 |type:landmark_region:GB|name= Hilfield Park Reservoir }}
{{gbmappingsmall|TQ 158 958 }}

|[http://magic.defra.gov.uk/MagicMap.aspx?startTopic=Designations&activelayer=lnrIndex&query=REF_CODE%3D%271008955%27 Map]

|[http://www.lnr.naturalengland.org.uk/Special/lnr/lnr_details.asp?C=21&N=&ID=217 Details]

|HMWT{{cite web|url=http://www.hertswildlifetrust.org.uk/reserves/hilfield-park-reservoir|title=Hilfield Park Reservoir|publisher=Herts and Middlesex Wildlife Trust|access-date=29 July 2015|url-status=dead|archive-url=https://web.archive.org/web/20150705222612/http://www.hertswildlifetrust.org.uk/reserves/hilfield-park-reservoir|archive-date=5 July 2015|df=dmy-all}}

|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.{{cite web|url=http://www.lnr.naturalengland.org.uk/Special/lnr/lnr_details.asp?C=0&N=&ID=217|title=Hilfield Park Reservoir|series=Local Nature Reserves|publisher=Natural England|date=14 March 2013|access-date=29 July 2015|url-status=live|archive-url=https://web.archive.org/web/20150929124719/http://www.lnr.naturalengland.org.uk/Special/lnr/lnr_details.asp?C=0&N=&ID=217|archive-date=29 September 2015}}{{cite web|url=http://www.hnhs.org/kcfinder/upload/files/Hilfield%20Park%202013.pdf|title=Hilfield Park Reservoir Wildlife Report 2013|publisher=Herts and Middlesex Wildlife Trust and Affinity Water|access-date=29 July 2015|url-status=live|archive-url=https://web.archive.org/web/20150929031018/http://www.hnhs.org/kcfinder/upload/files/Hilfield%20Park%202013.pdf|archive-date=29 September 2015}}

scope="row"|Howe Dell

|100px

|{{convert|4.0 |ha|acre |sortable=on}}

|Welwyn Hatfield
{{coord| 51.7572

0.2222 |type:landmark_region:GB|name= Howe Dell }}
{{gbmappingsmall|TL 228 080 }}

|[http://magic.defra.gov.uk/MagicMap.aspx?startTopic=Designations&activelayer=lnrIndex&query=REF_CODE%3D%271460435%27 Map]

|[https://web.archive.org/web/20150210191029/http://www.lnr.naturalengland.org.uk/Special/lnr/lnr_details.asp?C=21&N=&ID=1616 Details]

|

|The site is woodland which runs along both sides of a stream with steep sides. The main trees are hornbeam, oak and beech.{{cite web|url=http://www.lnr.naturalengland.org.uk/Special/lnr/lnr_details.asp?C=21&N=&ID=1616 |title=Howe Dell |series=Local Nature Reserves |publisher=Natural England |date=17 March 2013 |access-date=16 February 2015 |url-status=dead |archive-url=https://web.archive.org/web/20150210191029/http://www.lnr.naturalengland.org.uk/Special/lnr/lnr_details.asp?C=21&N=&ID=1616 |archive-date=10 February 2015 }}

scope="row"|Howe Grove Wood

|100px

|{{convert|8.5 |ha|acre |sortable=on}}

|Dacorum
{{coord| 51.7661 | -0.4668 |type:landmark_region:GB|name= Howe Grove Wood }}
{{gbmappingsmall|TL 059 086 }}

|[http://magic.defra.gov.uk/MagicMap.aspx?startTopic=Designations&activelayer=lnrIndex&query=REF_CODE%3D%271009334%27 Map]

|[http://www.lnr.naturalengland.org.uk/Special/lnr/lnr_details.asp?C=21&N=&ID=602 Details]

|

|This site is dense woodland next to the A4147 road in Hemel Hempstead.{{cite web|url=http://www.lnr.naturalengland.org.uk/Special/lnr/lnr_details.asp?C=0&N=&ID=602 |title=Howe Grove Wood |series=Local Nature Reserves |publisher=Natural England |date=14 March 2013 |access-date=26 February 2015 |url-status=dead |archive-url=https://web.archive.org/web/20140809045540/http://www.lnr.naturalengland.org.uk/Special/lnr/lnr_details.asp?C=0&N=&ID=602 |archive-date= 9 August 2014 }}

scope="row"|Ivel Springs

|File:Spring at Radwell feeding the Ivel - geograph.org.uk - 113839.jpg

|{{convert| 15.4|ha|acre |sortable=on}}

|North Hertfordshire
{{coord| 51.9942 | -0.1939 |type:landmark_region:GB|name= Ivel Springs }}
{{gbmappingsmall|TL 241 344 }}

|[http://magic.defra.gov.uk/MagicMap.aspx?startTopic=Designations&activelayer=lnrIndex&query=REF_CODE%3D%271475816%27 Map]

|[http://www.lnr.naturalengland.org.uk/Special/lnr/lnr_details.asp?C=21&N=&ID=1701 Details]

|

|The 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.{{cite web|url=http://www.lnr.naturalengland.org.uk/Special/lnr/lnr_details.asp?C=21&N=&ID=1701|title=Ivel Springs|series=Local Nature Reserves|publisher=Natural England|access-date=6 February 2015|url-status=live|archive-url=https://web.archive.org/web/20150207024810/http://www.lnr.naturalengland.org.uk/Special/lnr/lnr_details.asp?C=21&N=&ID=1701|archive-date=7 February 2015}}

scope="row"|{{sortname|The| Lairage Land|The Lairage Land}}

|100px

|{{convert|4.4 |ha|acre |sortable=on}}

|Watford
{{coord| 51.6448 | -0.4059 |type:landmark_region:GB|name= The Lairage Land }}
{{gbmappingsmall|TQ 104 952 }}

|[http://magic.defra.gov.uk/MagicMap.aspx?startTopic=Designations&activelayer=lnrIndex&query=REF_CODE%3D%271009554%27 Map]

|[http://www.lnr.naturalengland.org.uk/Special/lnr/lnr_details.asp?C=21&N=&ID=1373 Details]

|

|The 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.{{cite web|url= http://www.lnr.naturalengland.org.uk/Special/lnr/lnr_details.asp?C=21&N=&ID=1373|title= The Lairage Land|series= Local Nature Reserves|publisher= Natural England|date= 14 March 2013|access-date= 3 April 2015|url-status= live|archive-url= https://web.archive.org/web/20150210192641/http://www.lnr.naturalengland.org.uk/Special/lnr/lnr_details.asp?C=21&N=&ID=1373|archive-date= 10 February 2015}}

scope="row"|Mardley Heath

|File:Mardley Heath Picnic Area - geograph.org.uk - 486680.jpg

|{{convert| 41.1|ha|acre |sortable=on}}

|Welwyn Hatfield
{{coord| 51.8494 | -0.1925 |type:landmark_region:GB|name= Mardley Heath }}
{{gbmappingsmall| TL 246 183}}

|[http://magic.defra.gov.uk/MagicMap.aspx?startTopic=Designations&activelayer=lnrIndex&query=REF_CODE%3D%271009875%27 Map]

|[http://www.lnr.naturalengland.org.uk/Special/lnr/lnr_details.asp?C=21&N=&ID=1382 Details]

|

|In 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.{{cite web|url=http://www.welhat.gov.uk/article/1378/Mardley-Heath|title=Mardley Heath|publisher=Welwyn Hatfield Borough Council|access-date=6 February 2015|url-status=live|archive-url=https://web.archive.org/web/20150107054644/http://www.welhat.gov.uk/article/1378/Mardley-Heath|archive-date=7 January 2015}}

scope="row"|Marshalls Heath

|100px

|{{convert|4.0 |ha|acre |sortable=on}}

|St Albans
{{coord| 51.8207 | -0.3169 |type:landmark_region:GB|name=Marshalls Heath }}
{{gbmappingsmall|TL 161 149 }}

|[http://magic.defra.gov.uk/MagicMap.aspx?startTopic=Designations&activelayer=lnrIndex&query=REF_CODE%3D%271009023%27 Map]

|[http://www.lnr.naturalengland.org.uk/Special/lnr/lnr_details.asp?C=21&N=&ID=287 Details]

|

|The 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.{{cite web|url=http://www.lnr.naturalengland.org.uk/Special/lnr/lnr_details.asp?C=0&N=&ID=287|title=Marshalls Heath|series=Local Nature Reserves|publisher=Natural England|date=14 March 2013|access-date=16 July 2015|url-status=live|archive-url=https://web.archive.org/web/20150720205532/http://www.lnr.naturalengland.org.uk/Special/lnr/lnr_details.asp?C=0&N=&ID=287|archive-date=20 July 2015}}

scope="row"|Northaw Great Wood Country Park

|100px

|{{convert| 120.7|ha|acre |sortable=on}}

|Welwyn Hatfield
{{coord| 51.7227 | -0.14105304 |type:landmark_region:GB|name= Northaw Great Wood Country Park }}
{{gbmappingsmall|TL 285 043 }}

|[http://magic.defra.gov.uk/MagicMap.aspx?startTopic=Designations&activelayer=lnrIndex&query=REF_CODE%3D%271009876%27 Map]

|[http://www.lnr.naturalengland.org.uk/Special/lnr/lnr_details.asp?C=21&N=&ID=1193 Details]

|SSSI

|The 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.{{cite web|url=http://www.sssi.naturalengland.org.uk/citation/citation_photo/1000830.pdf|title=Northaw Great Wood citation|series=Sites of Special Scientific Interest|publisher=Natural England|access-date=23 December 2014|url-status=live|archive-url=https://web.archive.org/web/20160303224158/http://www.sssi.naturalengland.org.uk/citation/citation_photo/1000830.pdf|archive-date=3 March 2016}}

scope="row"|Norton Common

|File:Trees on a snowy Norton Common - geograph.org.uk - 404206.jpg

|{{convert|25.7 |ha|acre |sortable=on}}

|North Hertfordshire
{{coord| 51.9848 | -0.2278 |type:landmark_region:GB|name= Norton Common }}
{{gbmappingsmall|TL 218 333 }}

|[http://magic.defra.gov.uk/MagicMap.aspx?startTopic=Designations&activelayer=lnrIndex&query=REF_CODE%3D%271475824%27 Map]

|[http://www.lnr.naturalengland.org.uk/Special/lnr/lnr_details.asp?C=21&N=&ID=1694 Details]

|

|Woodland 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.{{cite web|url=http://www.lnr.naturalengland.org.uk/Special/lnr/lnr_details.asp?C=21&N=&ID=1694|title=Norton Common|series=Local Nature Reserves|publisher=Natural England|date=14 March 2013|access-date=6 February 2015|url-status=live|archive-url=https://web.archive.org/web/20150207172731/http://www.lnr.naturalengland.org.uk/Special/lnr/lnr_details.asp?C=21&N=&ID=1694|archive-date=7 February 2015}}{{cite web|url=http://www.north-herts.gov.uk/norton_common_nature_reserve_leaflet.pdf|title=Welcome to Norton Common|publisher=North Hertfordshire District Council|access-date=6 February 2015|url-status=dead|archive-url=https://web.archive.org/web/20120224152409/http://www.north-herts.gov.uk/norton_common_nature_reserve_leaflet.pdf|archive-date=24 February 2012}}

scope="row"|Oughtonhead Common

|File:River Oughton at Oughtonhead Common - geograph.org.uk - 889594.jpg

|{{convert| 17.4|ha|acre |sortable=on}}

|North Hertfordshire
{{coord| 51.9607 | -0.3015 |type:landmark_region:GB|name= Oughtonhead Commo }}
{{gbmappingsmall|TL 168 305 }}

|[http://magic.defra.gov.uk/MagicMap.aspx?startTopic=Designations&activelayer=lnrIndex&query=REF_CODE%3D%271009877%27 Map]

|[http://www.lnr.naturalengland.org.uk/Special/lnr/lnr_details.asp?C=21&N=&ID=1170 Details]

|

|The common is part of the Chilterns Area of Outstanding Natural Beauty.{{cite web|url=http://www.chilternsaonb.org/ccbmaps/1419/137/oughtonhead-common.html|title=Oughtonhead Common|publisher=Chilterns Conservation Board|access-date=8 February 2015|url-status=live|archive-url=https://web.archive.org/web/20150208135231/http://www.chilternsaonb.org/ccbmaps/1419/137/oughtonhead-common.html|archive-date=8 February 2015}} It has a wide variety of habitats, and the River Oughton flows along the edge. English Longhorn cattle graze pasture areas.{{cite web|url=http://www.north-herts.gov.uk/index/leisure_and_culture/parks__countryside_and_open_spaces/nature_reserves/oughtonhead_common-2.htm|title=Oughtonhead Common|publisher=North Hertfordshire District Council|access-date=8 February 2015|url-status=dead|archive-url=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|archive-date=7 February 2015}}

scope="row"|Oxhey Woods

|File:Oxhey Woods 3.JPG

|{{convert|100.2 |ha|acre |sortable=on}}

|Three Rivers
{{coord| 51.6241| -0.4080 |type:landmark_region:GB|name= Oxhey Woods }}
{{gbmappingsmall|TQ 103 929 }}

|[http://magic.defra.gov.uk/MagicMap.aspx?startTopic=Designations&activelayer=lnrIndex&query=REF_CODE%3D%271009320%27 Map]

|[http://www.lnr.naturalengland.org.uk/Special/lnr/lnr_details.asp?C=21&N=&ID=588 Details]

|

|The 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.{{cite web|url=http://www.threerivers.gov.uk/Default.aspx/Web/LocalNatureReserves#oxheywoods|title=Local Nature Reserves|publisher=Three Rivers District Council|access-date=25 September 2013|url-status=dead|archive-url=https://web.archive.org/web/20130927080858/http://www.threerivers.gov.uk/Default.aspx/Web/LocalNatureReserves#oxheywoods|archive-date=27 September 2013}} Plants include bluebells, anemones and violets and the rare wild service tree.{{cite web|url=http://www.lnr.naturalengland.org.uk/Special/lnr/lnr_details.asp?C=0&N=oxhey&ID=588|title=Oxhey Woods|series=Local Nature Reserves|publisher=Natural England|access-date=25 September 2013|url-status=live|archive-url=https://web.archive.org/web/20130927170044/http://www.lnr.naturalengland.org.uk/Special/lnr/lnr_details.asp?C=0&N=oxhey&ID=588|archive-date=27 September 2013}}

scope="row"|Oxleys Wood

|100px

|{{convert|1.2 |ha|acre |sortable=on}}

|Welwyn Hatfield
{{coord| 51.7509

0.2232 |type:landmark_region:GB|name= Oxleys Wood }}
{{gbmappingsmall| TL 227 073 }}

|[http://magic.defra.gov.uk/MagicMap.aspx?startTopic=Designations&activelayer=lnrIndex&query=REF_CODE%3D%271460436%27 Map]

|[http://www.lnr.naturalengland.org.uk/Special/lnr/lnr_details.asp?C=21&N=&ID=1617 Details]

|

|The 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.{{cite web|url=http://www.lnr.naturalengland.org.uk/Special/lnr/lnr_details.asp?C=21&N=&ID=1617|title=Oxleys Wood|series=Local Nature Reserves|publisher=Natural England|date=14 March 2013|access-date=16 February 2015|url-status=live|archive-url=https://web.archive.org/web/20150210192643/http://www.lnr.naturalengland.org.uk/Special/lnr/lnr_details.asp?C=21&N=&ID=1617|archive-date=10 February 2015}}

scope="row"|Prestwick Road Meadows

|100px

|{{convert|2.8 |ha|acre |sortable=on}}

|Three Rivers
{{coord| 51.6176 | -0.3880 |type:landmark_region:GB|name= Prestwick Road Meadows }}
{{gbmappingsmall|TQ 117 922 }}

|[http://magic.defra.gov.uk/MagicMap.aspx?startTopic=Designations&activelayer=lnrIndex&query=REF_CODE%3D%271082910%27 Map]

|[http://www.lnr.naturalengland.org.uk/Special/lnr/lnr_details.asp?C=21&N=&ID=1279 Details]

|

|This 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.{{cite web|url=http://www.hertslink.org/cms/content/15488274/16532622/prestwickrdw.pdf|title=Prestwick Road Meadows|publisher=Three Rivers District Council| access-date= 29 July 2015}}

scope="row"|Purwell Meadows

|100px

|{{convert|8.6 |ha|acre |sortable=on}}

|North Hertfordshire
{{coord| 51.9538 | -0.2552 |type:landmark_region:GB|name= Purwell Meadows }}
{{gbmappingsmall|TL 200 298 }}

|[http://magic.defra.gov.uk/MagicMap.aspx?startTopic=Designations&activelayer=lnrIndex&query=REF_CODE%3D%271009085%27 Map]

|[http://www.lnr.naturalengland.org.uk/Special/lnr/lnr_details.asp?C=21&N=&ID=349 Details]

|

|The River Purwell runs through the meadows. Wildlife includes kingfishers, which are native to the area, and water voles.{{cite web|url=http://www.north-herts.gov.uk/index/leisure_and_culture/parks__countryside_and_open_spaces/nature_reserves/purwell_meadows.htm|title=Purwell Meadows|publisher=North Hertfordshire District Council|access-date=7 March 2015|url-status=dead|archive-url=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|archive-date=7 February 2015}}

scope="row"|Rickmansworth Aquadrome

|File:Rickmansworth Aquadrome 002.jpg

|{{convert|41.0 |ha|acre |sortable=on}}

|Three Rivers
{{coord| 51.6331

0.4785 |type:landmark_region:GB|name= Rickmansworth Aquadrome }}
{{gbmappingsmall|TQ 054 938 }}

|[http://magic.defra.gov.uk/MagicMap.aspx?startTopic=Designations&activelayer=lnrIndex&query=REF_CODE%3D%271451122%27 Map]

|[http://www.lnr.naturalengland.org.uk/Special/lnr/lnr_details.asp?C=21&N=&ID=1566 Details]

|

|There are two lakes and a diverse range of wildlife habitats.{{cite web|url=http://www.threerivers.gov.uk/egcl-page/rickmansworth-aquadrome|publisher=Three Rivers District Council|title=Rickmansworth Aquadrome|access-date=8 February 2015|url-status=dead|archive-url=https://web.archive.org/web/20150306192408/http://www.threerivers.gov.uk/egcl-page/rickmansworth-aquadrome|archive-date=6 March 2015}} The site has trees such as oaks and willows, birds including herons and moorhens, and small copper and gatekeeper butterflies.{{cite web|url=http://www.hertslink.org/cms/content/15488274/16532630/ricaquadromeleafletw.pdf|title=Rickmansworth Aquadrome leaflet|publisher=Three Rivers District Council|access-date=8 February 2015|url-status=live|archive-url=https://web.archive.org/web/20150924025911/http://www.hertslink.org/cms/content/15488274/16532630/ricaquadromeleafletw.pdf|archive-date=24 September 2015}}

scope="row"|Sherrardspark Wood

|File:Sherrardspark Wood - Entrance from Campus West Car Park - geograph.org.uk - 1211226.jpg

|{{convert| 73.2|ha|acre |sortable=on}}

|Welwyn Hatfield
{{coord| 51.8102 | -0.2172 |type:landmark_region:GB|name= Sherrardspark Wood }}
{{gbmappingsmall| TL 230 139 }}

|[http://magic.defra.gov.uk/MagicMap.aspx?startTopic=Designations&activelayer=lnrIndex&query=REF_CODE%3D%271009333%27 Map]

|[http://www.lnr.naturalengland.org.uk/Special/lnr/lnr_details.asp?C=21&N=&ID=601 Details]

|SSSI

| Much 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.{{cite web|url= http://www.english-nature.org.uk/citation/citation_photo/1000271.pdf|title= Sherrardspark Wood citation|series= Sites of Special Scientific Interest|publisher= Natural England|access-date= 8 February 2015|url-status= live|archive-url= https://web.archive.org/web/20150924000935/http://www.english-nature.org.uk/citation/citation_photo/1000271.pdf|archive-date= 24 September 2015}}

scope="row"|Shrubhill Common

|100px

|{{convert| 9.8|ha|acre |sortable=on}}

|Dacorum
{{coord| 51.7539 | -0.5020 |type:landmark_region:GB|name= Shrubhill Common}}
{{gbmappingsmall| TL 035 072 }}

|[http://magic.defra.gov.uk/MagicMap.aspx?startTopic=Designations&activelayer=lnrIndex&query=REF_CODE%3D%271009138%27 Map]

|[http://www.lnr.naturalengland.org.uk/Special/lnr/lnr_details.asp?C=21&N=&ID=403 Details]

|CAONB{{cite web|url=http://www.chilternsaonb.org/ccbmaps/1470/137/shrub-hill-common.html|title=Shrub Hill Common|publisher=Chilterns Conservation Board|access-date=26 February 2015|url-status=live|archive-url=https://web.archive.org/web/20150227005338/http://www.chilternsaonb.org/ccbmaps/1470/137/shrub-hill-common.html|archive-date=27 February 2015}}

|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.{{cite web|url=http://www.dacenvforum.org.uk/mbr_shrubhill.php|title=Shrubhill Common Nature Reserve|publisher=Dacorum Environmental Forum - Members Pages|date=3 February 2015|url-status=dead|archive-url=https://web.archive.org/web/20160303235752/http://www.dacenvforum.org.uk/mbr_shrubhill.php|archive-date=3 March 2016}}

scope="row"|Singlers Marsh

|100px

|{{convert| 6.3|ha|acre |sortable=on}}

|Welwyn Hatfield
{{coord|51.8354 | -0.2206 |type:landmark_region:GB|name= Singlers Marsh }}
{{gbmappingsmall|TL 227 167 }}

|[http://magic.defra.gov.uk/MagicMap.aspx?startTopic=Designations&activelayer=lnrIndex&query=REF_CODE%3D%271460438%27 Map]

|[http://www.lnr.naturalengland.org.uk/Special/lnr/lnr_details.asp?C=21&N=&ID=1619 Details]

|

|The 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.{{cite web|url=http://www.welhat.gov.uk/singlersmarsh|title=Singlers Marsh|publisher=Welwyn Hatfield Borough Council|access-date=22 March 2015|url-status=dead|archive-url=https://web.archive.org/web/20150509004032/http://www.welhat.gov.uk/singlersmarsh|archive-date=9 May 2015|df=dmy-all}}

scope="row"|Stanborough Reedmarsh

|100px

|{{convert|3.3 |ha|acre |sortable=on}}

|Welwyn Hatfield
{{coord| 51.8102 | -0.2172 |type:landmark_region:GB|name= Stanborough Reedmarsh }}
{{gbmappingsmall|TL 230 139 }}

|[http://magic.defra.gov.uk/MagicMap.aspx?startTopic=Designations&activelayer=lnrIndex&query=REF_CODE%3D%271460437%27 Map]

|[http://www.lnr.naturalengland.org.uk/Special/lnr/lnr_details.asp?C=21&N=&ID=1618 Details]

|HMWT

|The 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.{{cite web|url=http://www.lnr.naturalengland.org.uk/Special/lnr/lnr_details.asp?C=21&N=&ID=1618|title=Stanborough Reedmarsh|series=Local Nature Reserves|publisher=Natural England|date=14 March 2013|access-date=16 February 2015|url-status=live|archive-url=https://web.archive.org/web/20150210192605/http://www.lnr.naturalengland.org.uk/Special/lnr/lnr_details.asp?C=21&N=&ID=1618|archive-date=10 February 2015}} Water figwort, common meadow rue and water chickweed grow along the river bank.{{cite web|url=http://www.hertswildlifetrust.org.uk/reserves/stanborough-reedmarsh|title=Stanborough Reedmarsh|publisher=Herts and Middlesex Wildlife Trust|access-date=16 February 2015|url-status=dead|archive-url=https://web.archive.org/web/20150211054527/http://www.hertswildlifetrust.org.uk/reserves/stanborough-reedmarsh|archive-date=11 February 2015|df=dmy-all}}

scope="row"|Stocker's Lake

|File:Rickmansworth, Stocker's Lake - geograph.org.uk - 1030096.jpg

|{{convert|37.9 |ha|acre |sortable=on}}

|Three Rivers
{{coord| 51.6297 | -0.4887 |type:landmark_region:GB|name= Stockers Lake }}
{{gbmappingsmall|TQ 047 934 }}

|[http://magic.defra.gov.uk/MagicMap.aspx?startTopic=Designations&activelayer=lnrIndex&query=REF_CODE%3D%271009168%27 Map]

|[http://www.lnr.naturalengland.org.uk/Special/lnr/lnr_details.asp?C=21&N=&ID=808 Details]

|HMWT{{cite web|url=http://www.hertswildlifetrust.org.uk/reserves/stockers-lake|title=Stocker's Lake|publisher=Herts and Middlesex Wildlife Trust|url-status=dead|archive-url=https://web.archive.org/web/20150321004643/http://www.hertswildlifetrust.org.uk/reserves/stockers-lake|archive-date=2015-03-21|access-date=2015-04-19}}

|This is an old flooded gravel pit which has over sixty species of breeding birds, including shoveler and goldeneye ducks in nationally important numbers.{{cite web|url= http://www.lnr.naturalengland.org.uk/Special/lnr/lnr_details.asp?C=21&N=&ID=808|title= Stockers Lake|series= Local Nature Reserves|publisher= Natural England|date= 14 March 2013|access-date= 8 February 2015|url-status= live|archive-url= https://web.archive.org/web/20150210190800/http://www.lnr.naturalengland.org.uk/Special/lnr/lnr_details.asp?C=21&N=&ID=808|archive-date= 10 February 2015}}

scope="row"|Therfield Heath

|File:Pulsatilla Vulgaris On Therfield Heath 02.JPG

|{{convert|147.3 |ha|acre |sortable=on}}

|North Hertfordshire
{{coord| 52.0423

0.05491 |type:landmark_region:GB|name= Therfield Heath }}
{{gbmappingsmall|TL 335 400 }}

|[http://magic.defra.gov.uk/MagicMap.aspx?startTopic=Designations&activelayer=lnrIndex&query=REF_CODE%3D%271009200%27 Map]

|[http://www.lnr.naturalengland.org.uk/Special/lnr/lnr_details.asp?C=21&N=&ID=465 Details]

|SSSI

|This 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.

scope="row"|Top Field and Cozens Grove

|100px

|{{convert| 6.1|ha|acre |sortable=on}}

|Broxbourne
{{coord| 51.7416 | -0.03164 |type:landmark_region:GB|name= Top Field and Cozens Grove }}
{{gbmappingsmall| TL 360 066 }}

|[http://magic.defra.gov.uk/MagicMap.aspx?startTopic=Designations&activelayer=lnrIndex&query=REF_CODE%3D%271134138%27 Map]

|[http://www.lnr.naturalengland.org.uk/Special/lnr/lnr_details.asp?C=21&N=&ID=1208 Details]

|

|Top 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.{{cite web|url=http://www.lnr.naturalengland.org.uk/Special/lnr/lnr_details.asp?C=21&N=&ID=1208|title=Top Field and Cozens Grove|series=Local Nature Reserves|publisher=Natural England|date=15 March 2013|access-date=16 February 2015|url-status=live|archive-url=https://web.archive.org/web/20150210192517/http://www.lnr.naturalengland.org.uk/Special/lnr/lnr_details.asp?C=21&N=&ID=1208|archive-date=10 February 2015}}{{cite web|url=http://www.broxbourne.gov.uk/leisure-parks-and-green-spaces/top-field-cozens-grove|title=Top Field Cozens Grove|publisher=Broxbourne Borough Council|access-date=16 February 2015|url-status=live|archive-url=https://web.archive.org/web/20160304033018/http://www.broxbourne.gov.uk/leisure-parks-and-green-spaces/top-field-cozens-grove|archive-date=4 March 2016}}

scope="row"|Watercress Wildlife Site

|100px

|{{convert| 1.2|ha|acre |sortable=on}}

|St Albans
{{coord| 51.7436 | -0.3328 |type:landmark_region:GB|name= Watercress Wildlife Site }}
{{gbmappingsmall|TL 152 063 }}

|[http://magic.defra.gov.uk/MagicMap.aspx?startTopic=Designations&activelayer=lnrIndex&query=REF_CODE%3D%271009879%27 Map]

|[http://www.lnr.naturalengland.org.uk/Special/lnr/lnr_details.asp?C=21&N=&ID=1437 Details]

|

| The site was formerly one of the many commercial watercress beds in the area.{{cite web|url=http://www.watercresslnr.org.uk/history/|title=History|publisher=Watercress Wildlife Association|access-date=28 June 2015|url-status=live|archive-url=https://web.archive.org/web/20150630183631/http://www.watercresslnr.org.uk/history/|archive-date=30 June 2015}} It has a wide variety of wildlife, including water rails, kingfishers, little grebes and muntjac deer.{{cite web |url=http://www.lnr.naturalengland.org.uk/Special/lnr/lnr_details.asp?C=0&N=&ID=1437 |title=Watercress Wildlife Site |series=Local Nature Reserves |publisher=Natural England |date=16 March 2013 |access-date=28 June 2015 |url-status=live |archive-url=https://web.archive.org/web/20150630234733/http://www.lnr.naturalengland.org.uk/Special/lnr/lnr_details.asp?C=0&N=&ID=1437 |archive-date=30 June 2015 }}

scope="row"|Waterford Heath

|File:Waterford Heath south 8.JPG

|{{convert|35.2 |ha|acre |sortable=on}}

|East Hertfordshire
{{coord| 51.8181

0.09215 |type:landmark_region:GB|name=Waterford Heath }}
{{gbmappingsmall|TL 316 150 }}

|[http://magic.defra.gov.uk/MagicMap.aspx?startTopic=Designations&activelayer=lnrIndex&query=REF_CODE%3D%271009564%27 Map]

|[http://www.lnr.naturalengland.org.uk/Special/lnr/lnr_details.asp?C=21&N=&ID=1438 Details]

|HMWT{{cite web|url=http://www.hertswildlifetrust.org.uk/reserves/waterford-heath|title=Waterford Heath|publisher=Herts and Middlesex Wildlife Trust|access-date=4 February 2015|url-status=dead|archive-url=https://web.archive.org/web/20150205023130/http://www.hertswildlifetrust.org.uk/reserves/waterford-heath|archive-date=5 February 2015|df=dmy-all}}

|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.{{cite web|url= http://www.lnr.naturalengland.org.uk/Special/lnr/lnr_details.asp?C=0&N=&ID=1438|title= Waterford Heath|series= Local Nature Reserves|publisher= Natural England|date= 16 March 2013|access-date= 4 February 2015|url-status= live|archive-url= https://web.archive.org/web/20140808173818/http://www.lnr.naturalengland.org.uk/Special/lnr/lnr_details.asp?C=0&N=&ID=1438|archive-date= 8 August 2014}}

scope="row"|Weston Hills

|100px

|{{convert|17.0 |ha|acre |sortable=on}}

|North Hertfordshire
{{coord| 51.8042 | -0.18189 |type:landmark_region:GB|name=Weston Hills }}
{{gbmappingsmall|TL 250 326 }}

|[http://magic.defra.gov.uk/MagicMap.aspx?startTopic=Designations&activelayer=lnrIndex&query=REF_CODE%3D%271481548%27 Map]

|[http://www.lnr.naturalengland.org.uk/Special/lnr/lnr_details.asp?C=21&N=&ID=1795 Details]

|

|Chalk 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.{{cite web|url=http://www.hertswildlifetrust.org.uk/sites/default/files/files/March%202013%20grasslands.pdf|publisher=Hertfordshire Wildlife Trusts Partnership|title=Newsletter|date=March 2013|access-date=29 April 2015|url-status=dead|archive-url=https://web.archive.org/web/20150924030720/http://www.hertswildlifetrust.org.uk/sites/default/files/files/March%202013%20grasslands.pdf|archive-date=24 September 2015|df=dmy-all}}

scope="row"|Wheathampstead

|100px

|{{convert|5.9 |ha|acre |sortable=on}}

|St Albans
{{coord| 51.8042 | -0.18188 |type:landmark_region:GB|name= Wheathampstead }}
{{gbmappingsmall|TL 177 131 }}

|[http://magic.defra.gov.uk/MagicMap.aspx?startTopic=Designations&activelayer=lnrIndex&query=REF_CODE%3D%271009880%27 Map]

|[http://www.lnr.naturalengland.org.uk/Special/lnr/lnr_details.asp?C=0&N=weston&ID=1795 Details]

|

|This 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.{{cite web|url=http://www.lnr.naturalengland.org.uk/Special/lnr/lnr_details.asp?C=0&N=&ID=1272|title=Wheathampstead|series=Local Nature Reserves|publisher=Natural England|date=16 March 2013|access-date=17 July 2015|url-status=live|archive-url=https://web.archive.org/web/20150721054609/http://www.lnr.naturalengland.org.uk/Special/lnr/lnr_details.asp?C=0&N=&ID=1272|archive-date=21 July 2015}}

scope="row"|{{sortname|The| Wick|The Wick Local Nature Reserve|The Wick}}

|100px

|{{convert|3.4 |ha|acre |sortable=on}}

|St Albans
{{coord|51.7619

0.3108|type:landmark_region:GB|name=The Wick, St Albans }}
{{gbmappingsmall|TL 166 083 }}

|[http://magic.defra.gov.uk/MagicMap.aspx?startTopic=Designations&activelayer=lnrIndex&query=REF_CODE%3D%271009201%27 Map]

|[http://www.lnr.naturalengland.org.uk/Special/lnr/lnr_details.asp?C=21&N=&ID=466 Details]

|

|This 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.{{cite web|url=http://www.lnr.naturalengland.org.uk/Special/lnr/lnr_details.asp?C=0&N=&ID=466|title=The Wick|series=Local Nature Reserves|publisher=Natural England|date=14 March 2013|access-date=23 July 2015|url-status=live|archive-url=https://web.archive.org/web/20150724025542/http://www.lnr.naturalengland.org.uk/Special/lnr/lnr_details.asp?C=0&N=&ID=466|archive-date=24 July 2015}}

scope="row"|{{sortname|The| Withey Beds|The Withey Beds}}

|100px

|{{convert| 7.5|ha|acre |sortable=on}}

|Three Rivers
{{coord|51.6345 | -0.4438 |type:landmark_region:GB|name= The Withey Beds }}
{{gbmappingsmall|TQ 078 940 }}

|[http://magic.defra.gov.uk/MagicMap.aspx?startTopic=Designations&activelayer=lnrIndex&query=REF_CODE%3D%271082912%27 Map]

|[http://www.lnr.naturalengland.org.uk/Special/lnr/lnr_details.asp?C=21&N=&ID=1433 Details]

|

|The 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.{{cite web|url=http://www.lnr.naturalengland.org.uk/Special/lnr/lnr_details.asp?C=0&N=&ID=1433|title=The Withey Beds|series=Local Nature Reserves|publisher=Natural England|date=14 March 2013|access-date=25 April 2015|url-status=live|archive-url=https://web.archive.org/web/20140808210410/http://www.lnr.naturalengland.org.uk/Special/lnr/lnr_details.asp?C=0&N=&ID=1433|archive-date=8 August 2014}}

See also

Notes

{{notelist}}

{{coord|51.9|-0.2|type:adm2nd_region:GB|display=title}}

References

{{Reflist|30em}}

{{Local Nature Reserves in Hertfordshire}}

{{LNR lists}}

{{featured list}}

{{DEFAULTSORT:Local Nature Reserves in Hertfordshire}}

Hertfordshire

Category:Hertfordshire-related lists