The River Till rises near

Tilshead Tilshead () is a village and civil parish in the county of Wiltshire in Southern England, about northwest of the town of Amesbury. It is close to the geographical centre of Salisbury Plain, on the A360 road approximately midway between the vi ...

Salisbury Plain Salisbury Plain is a chalk plateau in southern England covering . It is part of a system of chalk downlands throughout eastern and southern England formed by the rocks of the Chalk Group and largely lies within the county of Wiltshire, but st ...

in the English county of Wiltshire. It flows for about south and south-east, through

Orcheston Orcheston ) is a Civil parishes in England, civil parish and village in Wiltshire, England, lying on Salisbury Plain less than a mile north-west of neighbouring Shrewton. The present-day parish combines the two former parishes of Orcheston St Ma ...

, Maddington,

Shrewton Shrewton is a village and Civil parishes in England, civil parish on Salisbury Plain in Wiltshire, England, around west of Amesbury and north of Salisbury. It lies on the A360 road between Stonehenge and Tilshead. It is close to the source of ...

Winterbourne Stoke Winterbourne Stoke is a village and civil parish in Wiltshire, England, about west of Amesbury and west of the prehistoric monument of Stonehenge. The village is on the River Till at the southern edge of Salisbury Plain, on both sides of a ...

Berwick St James Berwick St James is a village and Civil parishes in England, civil parish on the River Till, Wiltshire, River Till in Wiltshire, England, about northwest of Salisbury, on the southern edge of Salisbury Plain. The parish includes the hamlet of A ...

and Stapleford, to join the

River Wylye The River Wylye ( ), also known in its upper reaches as the River Deverill, is a chalk stream in Wiltshire, England, with clear water flowing over gravel. It is popular with fly fishermen. A half-mile stretch of the river and three lakes in W ...

. The upper part of the river is a winterbourne, flowing only in winter and early spring. The whole length of the Till has been designated as a

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 ...

, as its vegetation includes

water crowfoot ''Ranunculus'' is a large genus of about 1750 species of flowering plants in the family Ranunculaceae. Members of the genus are known as buttercups, spearworts and water crowfoots. The genus is distributed worldwide, primarily in temperate an ...

which provides habitat for fish and snails. Although Tilshead village appears to be named from the river, the opposite applies. The village name was first used in the 16th century, and comes from older names based on "Theodwulf's hide" (recorded in

Domesday Book Domesday Book ( ; the Middle English spelling of "Doomsday Book") is a manuscript record of the Great Survey of much of England and parts of Wales completed in 1086 at the behest of William the Conqueror. The manuscript was originally known by ...

as ''Tidolthide''). The river was called the Winterbourne until around the start of the 20th century, when the name River Till began to be used on

Ordnance Survey The Ordnance Survey (OS) is the national mapping agency for Great Britain. The agency's name indicates its original military purpose (see Artillery, ordnance and surveying), which was to map Scotland in the wake of the Jacobite rising of ...

maps.

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 animals that neither develop nor retain a vertebral column (commonly known as a ''spine'' or ''backbone''), which evolved from the notochord. It is a paraphyletic grouping including all animals excluding the chordata, chordate s ...

angiosperm Flowering plants are plants that bear flowers and fruits, and form the clade Angiospermae (). The term angiosperm is derived from the Greek words (; 'container, vessel') and (; 'seed'), meaning that the seeds are enclosed within a fruit ...

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 Till in 2019:

References

{{DEFAULTSORT:Till Rivers of Wiltshire