The River Nadder is a tributary of the River Avon, flowing in south

Wiltshire Wiltshire (; abbreviated Wilts) is a historic and ceremonial county in South West England with an area of . It is landlocked and borders the counties of Dorset to the southwest, Somerset to the west, Hampshire to the southeast, Gloucestershire ...

, England.

Course

The river flows north from Ludwell to West End where it is joined by the Ferne Brook, close to the Lower Coombe and Ferne Brook Meadows site of special scientific interest ( SSSI). At Wardour it is joined by the

River Sem The River Sem is a natural waterway that flows through the ceremonial county of Wiltshire in England. It flows approximately from its source near East Knoyle to join the River Nadder near Wardour. Course The source is Summerleaze Pond near ...

. The river then flows east through Tisbury, where it is joined by the Fonthill Brook, and then onto

Barford St Martin Barford St Martin is a village and civil parish in Wiltshire, England, about west of Wilton, around the junction of the A30 and the B3089. Barford is known as one of the Nadder Valley villages, named for the River Nadder which flows through ...

and Burcombe before reaching Wilton. Near Quidhampton, the Wylye joins from the north. After passing

Harnham Harnham is a suburb of the city of Salisbury in Wiltshire, England, centred about south of Salisbury Cathedral and across the River Avon. Harnham is split into the areas of West Harnham and East Harnham. History Early history The area has h ...

, the Nadder joins the Avon near

Salisbury Cathedral Salisbury Cathedral, formally the Cathedral Church of the Blessed Virgin Mary, is an Anglican cathedral in Salisbury, England. The cathedral is the mother church of the Diocese of Salisbury and is the seat of the Bishop of Salisbury. The buil ...

. Including its headwaters, the river's length is about .

Water quality

The Environment Agency measures the water quality of the river systems in England. Each is given an overall ecological status, which may be one of five levels: high, good, moderate, poor and bad. There are several components that are used to determine this, including biological status, which looks at the quantity and varieties of

invertebrate Invertebrates are a paraphyletic group of animals that neither possess nor develop a vertebral column (commonly known as a ''backbone'' or ''spine''), derived from the notochord. This is a grouping including all animals apart from the chorda ...

angiosperm Flowering plants are plants that bear flowers and fruits, and form the clade Angiospermae (), commonly called angiosperms. The term "angiosperm" is derived from the Greek words ('container, vessel') and ('seed'), and refers to those plants th ...

s and fish. Chemical status, which compares the concentrations of various chemicals against known safe concentrations, is rated good or fail. Text was copied from this source, which is available under a
Open Government Licence v3.0
© Crown copyright. Water quality of the River Nadder in 2019:

Image gallery

Image:River Nadder at Teffont Mill.jpg, The Nadder at

Teffont Teffont is a civil parish in the south of Wiltshire, England, consisting of the villages of Teffont Magna and Teffont Evias. It is in the Nadder valley, north of the river, about west of Salisbury. The parish was created in 1934 by combining ...

Mill Image:Palladian_bridge_Wilton_House.jpg, Flowing under the Palladian Bridge at Wilton House Image:River_Nadder_Salisbury_Cathedral.jpg, Salisbury Cathedral seen from the banks of the Nadder Image:River_Nadder_Harnham_Mill.jpg, The watermill at Harnham is near where the Nadder meets the Avon Image:Reed beds - River Nadder at Harnham.jpg, Reed beds along the banks of the Nadder at Harnham

References

External links

Discover Nadder
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Cranborne Chase Cranborne Chase () is an area of central southern England, straddling the counties Dorset, Hampshire and Wiltshire. It is part of the Cranborne Chase and West Wiltshire Downs Area of Outstanding Natural Beauty (AONB). The area is dominated by, ...

AONB {{authority control Nadder 2Nadder