River MisbourneThe River Misbourne is a chalk river that rises in a field on the outskirts of Great Missenden in Buckinghamshire, passing through Little Missenden, Old Amersham, Chalfont St Giles, Chalfont St Peter and under the Chiltern railway line and the M25 motorway to its confluence with the River Colne just north of where the Colne is crossed by Western Avenue, the A40 road. It falls by around 94 m (310 ft) in the course of its 27 km (17 miles) length.
Misfit streamA misfit stream is a river that is either too large or too small to have eroded the valley or cave passage in which it flows. This term is also used for a stream or river with meanders that obviously are not proportional in size to the meanders of the valley or meander scars cut into its valley walls. If the misfit stream is too large for either its valley or meanders, it is known as an overfit stream.
Chalk streamChalk streams are rivers that rise from springs in landscapes with chalkbedrock. Since chalk is permeable, water easily percolates through the ground to the water table and chalk streams therefore receive little surface runoff. As a result, the water in the streams contains little organic matter and sediment and is generally very clear.
High WycombeTown in Buckinghamshire, EnglandTown in EnglandHigh Wycombe, often referred to as Wycombe ( ), is a market town in Buckinghamshire, England. Lying in the valley of the River Wye surrounded by the Chiltern Hills, it is 29 miles (47 km) west-northwest of Charing Cross in London, 13 miles (21 km) south-southeast of Aylesbury, 23 miles (37 km) southeast of Oxford, 15 miles (24 km) northeast of Reading and 8 miles (13 km) north of Maidenhead.
Ordnance datumAn ordnance datum (OD) is a vertical datum used by an Ordnance Survey as the basis for deriving altitudes on maps. A spot height may be expressed as above ordnance datum (AOD). Usually mean sea level (MSL) at a particular place is used for the datum. British IslesIn Great Britain, OD for the Ordnance Survey is Ordnance Datum Newlyn (ODN), defined as the mean sea level (MSL) as recorded by the Newlyn Tidal Observatory between 1915 and 1921.
Market townIn Europe a market town is a settlement that obtained a market right (by custom or royal charter) in the Middle Ages, which allowed it to host a regular market; this distinguished it from a village or a city. In Great Britain, small rural towns with a hinterland of villages are still commonly called market towns, and this is sometimes reflected in their names (e.g. Downham Market, Market Rasen, or Market Drayton).
Chiltern HillsThe Chiltern Hills or the Chilterns () are a chalkescarpment in southern England to the north-west of London, covering 660 mi (1,700 km) across Oxfordshire, Buckinghamshire, Hertfordshire and Bedfordshire. The hills stretch 45 miles (72 km) from Goring-on-Thames in the south-west to Hitchin in the north-east, and are 12 miles (19 km) at their widest.
BuckinghamshireBuckinghamshire ( , abbreviated Bucks) is a ceremonial county in South East England. It is bordered by Northamptonshire to the north, Bedfordshire to the north-east, Hertfordshire to the east, Greater London to the south-east, Berkshire to the south, and Oxfordshire to the west. The largest settlement is the city of Milton Keynes. The county has an area of 1,874 km2 (724 sq mi) and had an estimated population of 884,656 in 2024.
Central LondonCentral London is the innermost part of London, in England, spanning the City of London and several boroughs. Over time, a number of definitions have been used to define the scope of Central London for statistics, urban planning and local government.
AylesburyAylesbury ( AYLZ-bər-ee or ELLZ-bree) is the county town of Buckinghamshire, England. It is located midway between High Wycombe and Milton Keynes. In 2021, Aylesbury civil parish had a population of 63,273, while its urban area had a population of 87,950; the housing target for the town is set to grow, with 16,000 homes to be built by 2033.
London metropolitan areaThe London metropolitan area is the metropolitan area of London, England. It has several definitions, including the London Travel to Work Area, and usually consists of the London urban area, settlements that share London's infrastructure, and places from which it is practicable to commute to work in London. It is also known as the London commuter belt, or Southeast metropolitan area.
Civil parishIn England, a civil parish is a type of administrative parish used for local government. It is a territorial designation which is the lowest tier of local government. Civil parishes can trace their origin to the ancient system of parishes, which for centuries were the principal unit of secular and religious administration in most of England and Wales. Civil and religious parishes were formally split into two types in the 19th century and are now entirely separate.*As an Amazon Associate I earn from qualifying purchases.