River Gade at Great Gaddesden - geograph

The River Gade is a river running almost entirely through

Hertfordshire Hertfordshire ( or ; often abbreviated Herts) is a ceremonial county in the East of England and one of the home counties. It borders Bedfordshire to the north-west, Cambridgeshire to the north-east, Essex to the east, Greater London to the ...

. It rises from a spring in the

chalk Chalk is a soft, white, porous, sedimentary carbonate rock. It is a form of limestone composed of the mineral calcite and originally formed deep under the sea by the compression of microscopic plankton that had settled to the sea floor. Ch ...

of the

Chiltern Hills The Chiltern Hills or the Chilterns are a chalk escarpment in southern England, located to the north-west of London, covering across Oxfordshire, Buckinghamshire, Hertfordshire and Bedfordshire; they stretch from Goring-on-Thames in the south- ...

at Dagnall,

Buckinghamshire Buckinghamshire (, abbreviated ''Bucks'') is a Ceremonial counties of England, ceremonial county in South East England and one of the home counties. It is bordered by Northamptonshire to the north, Bedfordshire to the north-east, Hertfordshir ...

and flows through

Hemel Hempstead Hemel Hempstead () is a town in the Dacorum district in Hertfordshire, England. It is located north-west of London; nearby towns and cities include Watford, St Albans and Berkhamsted. The population at the 2021 United Kingdom census, 2021 cens ...

, Kings Langley, then along the west side of

Watford Watford () is a town and non-metropolitan district with Borough status in the United Kingdom, borough status in Hertfordshire, England, northwest of Central London, on the banks of the River Colne, Hertfordshire, River Colne. Initially a smal ...

through

Cassiobury Park Cassiobury Park is the principal public park in Watford, Hertfordshire, in England. It was created in 1909 from the purchase by Watford Borough Council of part of the estate of the Earl of Essex, Earls of Essex around Cassiobury House which wa ...

. After passing

Croxley Green Croxley Green is both a village and a suburb of Rickmansworth in Hertfordshire, England. It is also a civil parish. Located on the A412 between Watford to the north-east and Rickmansworth to the south-west, it is approximately north-west of ...

it reaches

Rickmansworth Rickmansworth () is a town in south-west Hertfordshire, England, located approximately north-west of central London, south-west of Watford and inside the perimeter of the M25 motorway. The town is mainly to the north of the Grand Union Canal ( ...

, where it joins the River Colne. For its whole course the Gade is unnavigable. Its principal tributary is the River Bulbourne which joins it at Two Waters, just below Hemel Hempstead. The river was once used to power

water mill A watermill or water mill is a mill that uses hydropower. It is a structure that uses a water wheel or water turbine to drive a mechanical process such as milling (grinding), rolling, or hammering. Such processes are needed in the production ...

s, such as those at Water End,

and Two Waters as well as powering the

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paper mill A paper mill is a factory devoted to making paper from vegetable fibres such as wood pulp, old rags, and other ingredients. Prior to the invention and adoption of the Fourdrinier machine and other types of paper machine that use an endless belt ...

s at Apsley and Croxley. It supported the farming of

watercress Watercress or yellowcress (''Nasturtium officinale'') is a species of aquatic flowering plant in the cabbage family, Brassicaceae. Watercress is a rapidly growing perennial plant native to Eurasia. It is one of the oldest known leaf vegetabl ...

, Water End, the Grade 2 liste
Jellicoe Water Gardens
and Two Waters until water was diverted from the river in 1947 to supply the growing

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. Below Hemel Hempstead it runs alongside and sometimes forms part of the

Grand Union Canal The Grand Union Canal in England is part of the Canals of the United Kingdom, British canal system. It is the principal navigable waterway between London and the Midlands. Starting in London, one arm runs to Leicester and another to Birmi ...

. The remains of a

Roman villa A Roman villa was typically a farmhouse or country house in the territory of the Roman Republic and the Roman Empire, sometimes reaching extravagant proportions. Nevertheless, the term "Roman villa" generally covers buildings with the common ...

were found at Gadebridge Park in Hemel Hempstead. The Gade is one of the rivers referred to in the name of the Three Rivers district. It is home to a wide range of biodiversity, including ducks and a range of insect life. The river bed from the source at Dagnall to Great Gaddesden, about 3 miles downstream is usually dry. After prolonged rain, it will fill and often flood.

References

Dacorum Landscape Character Assessment
High Gade Valley, Dacorum Borough Council, 2004. Accessed April 2007 {{DEFAULTSORT:Gade Geography of Three Rivers District 1Gade Rivers of Hertfordshire Rivers of Buckinghamshire Dacorum