List of Sites of Special Scientific Interest in Hertfordshire

Tring Reservoirs at sunrise

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 634 square miles (1,640 km²).^[2]

As of January 2016, there are 43 sites designated within this Area of Search, 36 of which have been designated for their biological interest and 7 for their geological interest.^[3] In England the body responsible for designating SSSIs is Natural England, which chooses a site "because of its flora, fauna, or geological or physiographical features".^[4]

The data in the table is taken from Natural England's website in the form of citation sheets for each SSSI.

For other counties, see List of Sites of Special Scientific Interest by Area of Search.

Key

Interest

• B = a site of biological interest
• G = a site of geological interest

Other classifications

• CAONB = Chilterns Area of Outstanding Natural Beauty
• GCR = Geological Conservation Review
• EWT = Essex Wildlife Trust
• HMWT = Herts and Middlesex Wildlife Trust
• LNR = Local nature reserve
• NCR = A Nature Conservation Review
• NNR = National nature reserve
• NT = National Trust
• Ramsar = Ramsar site
• RHPG = Register of Historic Parks and Gardens of Special Historic Interest in England
• RSPB = Royal Society for the Protection of Birds
• SM = Scheduled Monument
• SPA = Special Protection Area
• WT = Woodland Trust

Sites

Site name	Photograph	B	G	Area[lower-alpha 1]	Public access	Location[lower-alpha 1]	Other classifications	Map[lower-alpha 1]	Citation[lower-alpha 1]
Aldbury Nowers				19.8 hectares (49 acres)	YES	Tring 51°48′43″N 0°37′19″W / 51.8120°N 0.6219°W SP951135	HMWT[5]	Map	Citation
Alpine Meadow				0.8 hectares (2.0 acres)	YES	Berkhamsted 51°46′57″N 0°34′04″W / 51.7826°N 0.5677°W SP989103	HMWT[6]	Map	Citation
Amwell Quarry				37.1 hectares (92 acres)	YES	Amwell 51°47′52″N 0°00′16″W / 51.7978°N 0.0045°W TL377129	HMWT,[7] SPA, SPA[8] Ramsar[9]	Map	Citation
Ashridge Commons & Woods				627.3 hectares (1,550 acres)	YES	Little Gaddesden 51°48′42″N 0°35′14″W / 51.8116°N 0.5871°W SP975135	CAONB,[10] NT[10]	Map	Citation
Ashwell Springs				0.3 hectares (0.74 acres)	YES	Ashwell 52°02′32″N 0°08′59″W / 52.0421°N 0.1497°W TL270398		Map	Citation
Benington High Wood				20.7 hectares (51 acres)	YES	Benington 51°53′43″N 0°08′02″W / 51.8952°N 0.1339°W TL285235		Map	Citation
Blagrove Common				5.0 hectares (12 acres)	YES	Sandon 51°59′12″N 0°04′13″W / 51.9868°N 0.0704°W TL326338	HMWT[11]	Map	Citation
Bricket Wood Common				75.5 hectares (187 acres)	YES	Bricket Wood 51°41′47″N 0°21′59″W / 51.6964°N 0.3664°W TL130010		Map	Citation
Castle Lime Works Quarry				1.4 hectares (3.5 acres)	NO	South Mimms 51°42′31″N 0°13′22″W / 51.7087°N 0.2227°W TL229026	GCR[12]	Map	Citation
Croxley Common Moor				39.6 hectares (98 acres)	YES	Croxley Green 51°38′33″N 0°26′11″W / 51.6425°N 0.4363°W TQ083949	LNR[13]	Map	Citation
Downfield Pit, Westmill				0.3 hectares (0.74 acres)	YES	Ware 51°49′51″N 0°02′37″W / 51.8308°N 0.0437°W TL349165		Map	Citation
Frogmore Meadows				4.6 hectares (11 acres)	YES	Chenies 51°40′47″N 0°31′29″W / 51.6796°N 0.5247°W TQ021989	CAONB,[14] HMWT,[15]	Map	Citation
Great Hormead Park				15.0 hectares (37 acres)	YES	Great Hormead 51°56′36″N 0°03′42″E / 51.9432°N 0.0616°E TL418292		Map	Citation
Hertford Heath				29.1 hectares (72 acres)	YES	Hertford Heath 51°46′53″N 0°02′14″W / 51.7813°N 0.0372°W TL355110 & TL350106	HMWT[16]	Map	Citation
Hillcollins Pit				0.2 hectares (0.49 acres)	YES	Furneux Pelham 51°55′16″N 0°05′43″E / 51.9211°N 0.0954°E TL442268	GCR[17]	Map	Citation
Hunsdon Mead				34.2 hectares (85 acres)	YES	Harlow 51°46′47″N 0°03′15″E / 51.7797°N 0.0541°E TL418110	HMWT[18]	Map	Citation
Knebworth Woods				128.8 hectares (318 acres)	YES	Stevenage 51°53′09″N 0°13′02″W / 51.8857°N 0.2172°W TL228223		Map	Citation
Little Heath Pit				1.2 hectares (3.0 acres)	YES	Potten End 51°45′48″N 0°31′40″W / 51.7633°N 0.5278°W TL017082	GCR,[19] NT[20]	Map	Citation
Moor Hall Meadows				24.0 hectares (59 acres)	YES	Ardeley 51°55′16″N 0°04′03″W / 51.9211°N 0.0674°W TL330265		Map	Citation
Moor Mill Quarry, West				0.2 hectares (0.49 acres)	NO	How Wood 51°42′43″N 0°21′02″W / 51.7119°N 0.3506°W TL141027	GCR[21]	Map	Citation
Northaw Great Wood				224.3 hectares (554 acres)	YES	Cuffley 51°43′22″N 0°08′54″W / 51.7228°N 0.1483°W TL280043	LNR[22]	Map	Citation
Oddy Hill and Tring Park				36.0 hectares (89 acres)	YES	Tring 51°47′20″N 0°38′50″W / 51.7890°N 0.6473°W SP934109 51°47′01″N 0°39′22″W / 51.7837°N 0.6561°W SP928103	RHPG.[23]	Map	Citation
Oughtonhead Lane				1.0 hectare (2.5 acres)	YES	Hitchin 51°57′19″N 0°17′45″W / 51.9552°N 0.2959°W TL172299	GCR[24]	Map	Citation
Patmore Heath				8.5 hectares (21 acres)	YES	Albury 51°54′43″N 0°05′47″E / 51.9120°N 0.0965°E TL443258	HMWT[25]	Map	Citation
Plashes Wood				73.2 hectares (181 acres)	YES	Standon 51°52′01″N 0°00′21″E / 51.8669°N 0.0058°E TL382206		Map	Citation
Redwell Wood				52.6 hectares (130 acres)	YES	South Mimms 51°42′29″N 0°14′45″W / 51.7081°N 0.2459°W TL213025		Map	Citation
Roughdown Common				3.7 hectares (9.1 acres)	YES	Hemel Hempstead 51°44′25″N 0°29′06″W / 51.7402°N 0.4850°W TL047057	CAONB[26]	Map	Citation
Rye Meads				60.3 hectares (149 acres)	YES	Rye House 51°46′34″N 0°00′22″E / 51.7760°N 0.0061°E TL385105	Ramsar,[27] SPA[8] RSPB,[27] HMWT[28]	Map	Citation
Sarratt Bottom				3.5 hectares (8.6 acres)	NO	Sarratt 51°40′46″N 0°30′37″W / 51.6794°N 0.5102°W TQ031989		Map	Citation
Sawbridgeworth Marsh				6.2 hectares (15 acres)	YES	Sawbridgeworth 51°49′15″N 0°09′48″E / 51.8209°N 0.1634°E TL492158	EWT[29]	Map	Citation
Sherrardspark Wood				74.4 hectares (184 acres)	YES	Welwyn Garden City 51°48′37″N 0°13′02″W / 51.8102°N 0.2172°W TL230139	LNR[30]	Map	Citation
Tewinbury				7.3 hectares (18 acres)	NO	Tewin 51°48′34″N 0°10′04″W / 51.8095°N 0.1679°W TL264139	HMWT[31]	Map	Citation
Therfield Heath				146.5 hectares (362 acres)	YES	Therfield 52°02′32″N 0°03′18″W / 52.0423°N 0.0549°W TL335400	LNR,[32] SM[33][34]	Map	Citation
Thorley Flood Pound				17.3 hectares (43 acres)	YES	Thorley 51°50′36″N 0°09′41″E / 51.8434°N 0.1615°E TL490183	HMWT[35]	Map	Citation
Tring Reservoirs				100.0 hectares (247 acres)	YES	Tring 51°48′49″N 0°40′06″W / 51.8135°N 0.6683°W SP919136 SP905131	HMWT[36]	Map	Citation
Tring Woodlands				24.1 hectares (60 acres)	YES	Tring 51°46′52″N 0°40′20″W / 51.7812°N 0.6721°W SP917100	CAONB[37]	Map	Citation
Turnford and Cheshunt Pits				174.4 hectares (431 acres)	YES	Cheshunt 51°42′32″N 0°01′07″W / 51.7090°N 0.0186°W TL370030	SPA[8]	Map	Citation
Wain Wood				19.0 hectares (47 acres)	YES	Preston 51°54′56″N 0°17′09″W / 51.9155°N 0.2858°W TL180255		Map	Citation
Water End Swallow Holes				11.1 hectares (27 acres)	YES	Welham Green 51°43′26″N 0°13′14″W / 51.7239°N 0.2206°W TL230043		Map	Citation
Westwood Quarry				0.1 hectares (0.25 acres)	NO	Watford 51°40′56″N 0°27′08″W / 51.6823°N 0.4523°W TQ071993	GCR[38]	Map	Citation
Whippendell Wood				66.7 hectares (165 acres)	YES	Watford 51°40′07″N 0°26′44″W / 51.6687°N 0.4455°W TQ076978		Map	Citation
Wormley-Hoddesdonpark Wood North				143.9 hectares (356 acres)	YES	Hoddesdon 51°45′32″N 0°02′33″W / 51.7589°N 0.0425°W TL352085 TL325075	NNR,[39] WT,[39] NCR,[40] HMWT,[41] SAC[42]	Map	Citation
Wormley-Hoddesdonpark Wood South				196.2 hectares (485 acres)	YES	Cheshunt 51°44′39″N 0°04′25″W / 51.7441°N 0.0735°W TL331068	NNR,[43] NCR,[44] SAC[42]	Map	Citation

See also

• List of Local Nature Reserves in Hertfordshire
• Herts and Middlesex Wildlife Trust

Notes

1. Maps and citations for each site are taken from the Natural England database. The area and location of the site is shown on the citation. The listing is as in January 2016.

References

1. "Resident Population". Hertfordshire Local Information System. Retrieved 29 July 2015.
2. "Area Measurements". Hertfordshire Local Information System. Retrieved 10 February 2015.
3. "Designated Sites View - Hertfordshire". Natural England. Retrieved 12 January 2016.
4. "Guidelines for selection of biological SSSIs". Joint Nature Conservation Committee. Retrieved 12 January 2016.
5. "Aldbury Nowers". Herts and Middlesex Wildlife Trust. Retrieved 11 January 2016.
6. "Alpine Meadow". Hertfordshire and Middlesex Wildlife Trust. Retrieved 21 December 2014.
7. "Amwell". Hertfordshire and Middlesex Wildlife Trust. Retrieved 19 December 2014.
8. "Lee Valley". Joint Nature Conservation Committee. Retrieved 16 January 2016.
9. "Lee Valley". Ramsar Sites Information Service. Retrieved 19 December 2014.
10. "Ashridge Commons and Woods citation" (PDF). Sites of Special Scientific Interest. Natural England. Retrieved 4 January 2016.
11. "Blagrove Common". Hertfordshire and Middlesex Wildlife Trust. Retrieved 12 January 2015.
12. "Castle Lime Works Quarry (Karst)". Joint Nature Conservation Committee. Retrieved 11 January 2016.
13. "Croxley Common Moor". Local Nature Reserves. Natural England. 13 March 2013. Retrieved 10 December 2014.
14. "Frogmore Meadows citation" (PDF). Sites of Special Scientific Interest. Natural England. Retrieved 11 December 2014.
15. "Frogmore Meadow". Herts and Middlesex Wildlife Trust. Retrieved 11 December 2014.
16. "Hertford Heath". Herts and Middlesex Wildlife Trust. Retrieved 15 February 2015.
17. "Furneux Pelham Gravel Pit (Hillcollins Pit) (Quaternary of the Thames)". Joint Nature Conservation Committee. Retrieved 18 February 2015.
18. "Hunsdon and Eastwick Meads". Herts & Middlesex Wildlife Trust. Retrieved 11 January 2016.
19. "Little Heath Pit (Quaternary of the Thames)". Joint Nature Conservation Committee. Retrieved 11 January 2016.
20. "Little Heath Pit citation" (PDF). Sites of Special Scientific Interest. Natural England. Retrieved 25 February 2015.
21. "Moor Mill Quarry (Quaternary of the Thames)". Joint Nature Conservation Committee. Retrieved 11 January 2016.
22. "Northaw Great Wood Country Park". Local Nature Reserves. Natural England. 14 March 2013. Retrieved 22 March 2015.
23. "Tring Park". English Heritage. Retrieved 23 December 2014.
24. "Oughtonhead Lane, Hitchin (Quaternary of East Anglia)". Joint Nature Conservation Committee. Retrieved 11 January 2016.
25. "Patmore Heath". Herts and Middlesex Wildlife Trust. Retrieved 11 December 2014.
26. "Roughdown Common". Chilterns Conservation Board. Retrieved 21 December 2014.
27. "Rye Meads (SSSI SPA RAMSAR)". Royal Society for the Protection of Birds, South East Hertfordshire Local Group. Retrieved 28 September 2015.
28. "Rye Meads". Herts and Middlesex Wildlife Trust. Retrieved 11 December 2014.
29. "Sawbridgeworth Marsh Nature Reserve". Essex Wildlife Trust. Retrieved 28 December 2014.
30. "Sherrardspark Wood". Local Nature Reserves. Natural England. Retrieved 12 January 2016.
31. "Tewinbury". Herts and Middlesex Wildlife Trust. Retrieved 22 March 2015.
32. "Therfield Heath". Local Nature Reserves. Natural England. Retrieved 26 July 2013.
33. "1010428 - The National Heritage List for England". Retrieved 12 January 2016.
34. "1010431 - The National Heritage List for England". Retrieved 12 January 2016.
35. "Thorley Wash". Herts and Middlesex Wildlife Trust. Retrieved 11 March 2015.
36. "Tring Reservoirs". Herts and Middlesex Wildlife Trust. Retrieved 19 April 2015.
37. "Tring Woodlands citation" (PDF). Sites of Special Scientific Interest. Natural England. Retrieved 14 January 2015.
38. "Westwood Quarry (Quaternary of the Thames)". Joint Nature Conservation Committee. Retrieved 12 January 2016.
39. "Broxbourne Woods". Countryside Management Service. Retrieved 12 January 2016.
40. "Wormley-Hoddesdonpark Wood North citation" (PDF). Sites of Special Scientific Interest. Natural England. Retrieved 18 October 2015.
41. "Danemead". Herts and Middlesex Wildlife Trust. Retrieved 19 April 2015.
42. "Broxbourne Woods". Natural England. Retrieved 17 October 2015.
43. "Map of Wormley-Hoddesdonpark Wood South". Sites of Special Scientific Interest. Natural England. Retrieved 10 January 2016.
44. "Wormley-Hoddesdonpark Wood South citation" (PDF). Sites of Special Scientific Interest. Natural England. Retrieved 10 January 2016.