Cleeve Hill () is a 15.1

hectare The hectare (; SI symbol: ha) is a non-SI metric unit of area equal to a square with 100-metre sides (1 hm2), or 10,000 m2, and is primarily used in the measurement of land. There are 100 hectares in one square kilometre. An acre is a ...

(37.4 acre)

biological Site of Special Scientific Interest A Site of Special Scientific Interest (SSSI) in Great Britain or an Area of Special Scientific Interest (ASSI) in the Isle of Man and Northern Ireland is a conservation designation denoting a protected area in the United Kingdom and Isle of ...

between

Old Cleeve Old Cleeve (https://www.oldcleeveparishcouncil.org/) is a village south east of Minehead in the Somerset West and Taunton district of Somerset, England, and also a civil parish. The civil parish of Old Cleeve covers an area of and includes t ...

and

Watchet Watchet is a harbour town, civil parish and electoral ward in the county of Somerset, England, with a population in 2011 of 3,785. It is situated west of Bridgwater, north-west of Taunton, and east of Minehead. The town lies at the mouth of ...

Somerset ( en, All The People of Somerset) , locator_map = , coordinates = , region = South West England , established_date = Ancient , established_by = , preceded_by = , origin = , lord_lieutenant_office =Lord Lieutenant of Somerset , lord_ ...

, notified in 1989. The site covers a moderate to steeply sloping south face of the

Washford River The Washford River rises at near Luxborough in the Brendon Hills and flows through Somerset to the Bristol Channel at Watchet. The river valley passes through the Cleeve Hill Site of Special Scientific Interest, and close to Cleeve Abbey ...

Valley. It supports a rich and diverse calcareous

grassland A grassland is an area where the vegetation is dominated by grasses (Poaceae). However, sedge (Cyperaceae) and rush (Juncaceae) can also be found along with variable proportions of legumes, like clover, and other herbs. Grasslands occur natur ...

community with associated mixed woodland and scrub. The site contains two species of plant which are nationally rare in Great Britain,

Nit-grass ''Gastridium ventricosum'' is a species of Poaceae, grass known by the common name nit-grass (British Isles) or nit grass (USA). This is an annual grass bearing a long, thin, smooth inflorescence of spikelets. It is native to Europe, North Africa ...

(''Gastridium ventricosum'') and

Rough Marsh-mallow Rough may refer to: * Roughness (disambiguation) * Rough (golf), the area outside the fairway on a golf course Geography * Rough (facility), former gas field now gas storage facility, off the Yorkshire coast of England People * Alan Rough (born 1 ...

(''Althaea hirsuta'').

References

Sites of Special Scientific Interest in Somerset Sites of Special Scientific Interest notified in 1989 {{Somerset-geo-stub