The River Slea is a tributary of the south branch of the

River Wey The River Wey is a main tributary of the River Thames in south east England. Its two branches, one of which rises near Alton, Hampshire, Alton in Hampshire and the other in West Sussex to the south of Haslemere, join at Tilford in Surrey. Onc ...

in Hampshire.

Course

The river flows east from the confluence of the Kingsley and the longer Oakhanger streams at Kingsley Mill, through the village of

Sleaford Sleaford is a market town and Civil parishes in England, civil parish in the North Kesteven district of Lincolnshire, England. On the edge of the The Fens, Fenlands, it is north-east of Grantham, west of Boston, Lincolnshire, Boston, and sou ...

until it meets the Wey just north of Brockford Bridge. The section between Kingsley Mill and Sleaford is also known as the Oxney Stream. The Slea's main tributary is the Oxney Moss which rises on the west side of

Bordon Bordon is a town in the East Hampshire district of Hampshire, England. It lies in the interior of the royal Woolmer Forest, about southeast of Alton. The town forms a part of the civil parish of Whitehill which is one of two contiguous villa ...

and joins at Sleaford.

Water quality

The Environment Agency measure 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 Slea in 2019:

References

Slea Wey catchment {{England-river-stub