This is a list of the Sites of Special Scientific Interest (SSSIs) in County Durham , England. It excludes SSSIs situated in that area south of the River Tyne that is now part of the metropolitan county of Tyne and Wear as well as the area north of the River Tees which, prior to 1996, formed part of the county of Cleveland.
As of July 2010, County Durham has 88 sites that have been designated as SSSIs, of which 67 have been designated for their biological interest, 16 for their geological interest, and 5 for both. [1]
Five of these sites are shared with an adjacent county:
Sites of Special Scientific Interest are areas that have been selected for special protection because of their floral, faunal or geological significance. The concept was first given a statutory basis in the National Parks and Access to the Countryside Act 1949, the relevant provisions of which were repeated in the Wildlife and Countryside Act 1981. Under the 1949 Act, responsibility for selecting and notifying SSSIs in England was delegated to the newly created Nature Conservancy, which was replaced in 1973 by the Nature Conservancy Council (NCC). In 1991, the NCC was split up, its responsibilities in England being passed to English Nature which, in turn, was amalgamated into a new body, Natural England, in 2006.
The process for establishing an SSSI is as follows: [2]
The initial notification of a site is accompanied by a citation sheet, which outlines the reasons for the notification: the data in the following list is summarised from these individual citation sheets. [3]
Of the 88 SSSIs designated in County Durham, 67 have been designated for their biological interest, 16 for their geological interest, and five for both biological and geological interest.
While many of the SSSIs designated for biological reasons cover a variety of habitats, most have been designated primarily for one (or more) of a small number of reasons, as detailed in the individual citation sheets: [3]
The surface geology of County Durham is largely confined to rocks dating from the Carboniferous and Permian periods. In the west of the county, outcrops of Dinantian limestones are found in the river valleys, while the upland areas are underlain by the younger Namurian Millstone Grit Series. To the east, these rocks dip beneath the Westphalian Coal Measures, which underlay a broad swathe in the centre of the county. Further east, the Coal Measures are overlain by Permian Magnesian Limestone, which forms a low plateau across the eastern part of the county. Igneous intrusions are a prominent feature of the geology and gave rise to extensive mining for lead and other minerals, especially in the upper Weardale area in the west of the county. [4] [5]
Although each SSSI designated for geological reasons has its own distinctive features, they fall into a small number of broad categories, as indicated in the individual citation sheets: [3]
From its inception, English Nature classified sites using the 1974–1996 county system. As Natural England uses the same system, [6] it is also adopted in the following list. As a result, some sites that lie within the ceremonial county of Durham and might therefore be expected to be listed here will be found instead in either the Cleveland or the Tyne and Wear lists.
For other counties, see List of SSSIs by Area of Search.
Waskerley is a village in County Durham, England. It is situated six miles to the southwest of Consett and three miles southwest of Castleside and the A68. Stanhope in the Durham Dales is a further six miles to the southwest and the Derwent Reservoir and the village of Edmundbyers is approximately five miles to the north. The village of Muggleswick is three miles to the north.
Muggleswick is a village and civil parish in County Durham, England. It is situated a few miles to the west of Consett. the population was 130 at the 2001 Census reducing to 113 at the 2011 Census.
The River Wear in Northern England rises in the Pennines and flows eastwards, mostly through County Durham, to the North Sea in the City of Sunderland. At 60 mi (97 km) long, it is one of the region's longest rivers. The Wear wends in a steep valley through the cathedral city of Durham and gives its name to Weardale in its upper reach and Wearside by its mouth.
Upper Teesdale is a Site of Special Scientific Interest (SSSI) in the west County Durham, England. It encompasses an extensive upland area that includes the headwaters of the River Tees and the surrounding catchment area upstream of the village of Langdon Beck.
Hexhamshire Moors is a Site of Special Scientific Interest covering an extensive area of moorland in the Wear Valley district of north-west County Durham and the Tynedale district of south-west Northumberland, England.
Hisehope Burn Valley is a Site of Special Scientific Interest in the Derwentside district of Durham, England. It consists of two separate parcels of land, one on the west bank of Hisehope Burn, the other a few hundred yards to the east, straddling the headwaters of another small burn. The site is some 3 km west of the village of Castleside and 1 km north of the Smiddy Shaw Reservoir. The larger area adjoins the Muggleswick, Stanhope and Edmundbyers Commons and Blanchland Moor SSSI.
Moorhouse and Cross Fell is a Site of Special Scientific Interest covering an extensive area of moorland in the Wear Valley district of west County Durham and the Eden district of Cumbria, England. It is contiguous with Upper Teesdale SSSI to the east and Appleby Fells SSSI to the south. The area covered extends roughly from an arc through the villages of Gamblesby, Leadgate and Garrigill southward as far as Milburn in the west and Cow Green Reservoir in the east. It includes the whole of Cross Fell, the summit of which, at 893 metres asl, is the highest point in the Pennines and in England outside the Lake District.
Lune Forest is a Site of Special Scientific Interest covering an extensive area of moorland in the Teesdale district of west Durham, England. In the north, where it adjoins the Upper Teesdale and Appleby Fells SSSIs, it extends from Mickle Fell eastward almost as far as Harter Fell, above the hamlet of Thringarth. Its southern limit is marked by the River Balder, upstream from Balderhead Reservoir, where it shares a boundary with Cotherstone Moor SSSI to the south. Grains o' th' Beck Meadows and Close House Mine SSSIs are entirely surrounded by Lune Forest, but do not form part of it.
Muggleswick, Stanhope and Edmundbyers Commons and Blanchland Moor is a Site of Special Scientific Interest in County Durham and Northumberland, England. It consists of two separate areas, the larger—encompassing the upland areas of Muggleswick, Stanhope and Edmundbyers Commons—in the Derwentside and Wear Valley districts of north Durham, the smaller—Blanchland Moor—in the Tynedale district of south-west Northumberland.
Pow Hill Bog is a Site of Special Scientific Interest in the Wear Valley district of County Durham, England. It lies alongside Derwent Reservoir, approximately 2 km north-west of the village of Edmundbyers and adjacent to the Edmundbyers Common portion of the Muggleswick, Stanhope and Edmundbyers Commons and Blanchland Moor SSSI.
Raisby Hill Quarry is a Site of Special Scientific Interest in east County Durham, England. It lies just under 2 kilometres (1.2 mi) east of the village of Coxhoe.
Waskerley Reservoir is the largest of a group of three reservoirs located on Muggleswick Common, County Durham, with the others being Smiddy Shaw and Hisehope Reservoirs.
Smiddy Shaw Reservoir is one of a group of three reservoirs located on Muggleswick Common, County Durham, the others being Waskerley and Hisehope Reservoirs.
Hisehope Reservoir is the smallest of a group of three reservoirs located on Muggleswick Common, County Durham, the others being Waskerley and Smiddy Shaw Reservoirs.
The geology of County Durham in northeast England consists of a basement of Lower Palaeozoic rocks overlain by a varying thickness of Carboniferous and Permo-Triassic sedimentary rocks which dip generally eastwards towards the North Sea. These have been intruded by a pluton, sills and dykes at various times from the Devonian Period to the Palaeogene. The whole is overlain by a suite of unconsolidated deposits of Quaternary age arising from glaciation and from other processes operating during the post-glacial period to the present. The geological interest of the west of the county was recognised by the designation in 2003 of the North Pennines Area of Outstanding Natural Beauty as a European Geopark.
Quarry Moor is a Site of Special Scientific Interest, or SSSI, at the south edge of Ripon, North Yorkshire, England, and adjacent to the A61 road. It contains an outcrop of Magnesian Limestone, exposed by former quarrying. 255 million years ago this limestone was the peripheral sediment of a tropical sea. The land was donated in 1945 to the people of Ripon by the town's mayor, Alderman Thomas Fowler Spence, a varnish manufacturer. The land was notified as an SSSI in 1986 because its calcareous grassland supported a large diversity of plant species. The site features a Schedule 8 protected plant, thistle broomrape. The land is protected as a nature reserve, and it is also managed as a recreational area. Therefore, its calcareous grass area is fenced off for protection and study, but it also contains a car park, information signs, a children's play area, accessible paths, benches, and dog waste bins.