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See searches and references containing ORDNANCE DATUM!ORDNANCE DATUM
Vertical datum used as the basis for deriving altitudes on maps
An 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
Vertical datum
NAP markers in Amsterdam Amsterdam Ordnance Datum or Normaal Amsterdams Peil (NAP) is a vertical datum in use in large parts of Western Europe. Originally
Amsterdam_Ordnance_Datum
Reference surface for vertical positions
Normalhöhennull, preceded by Normalnull Great Britain: Ordnance Datum Newlyn Netherlands: Amsterdam Ordnance Datum, was also used by Prussia Switzerland: Metres
Vertical_datum
Reference frame for measuring location
A geodetic datum or geodetic system (also: geodetic reference datum, geodetic reference system, or geodetic reference frame, or terrestrial reference frame)
Geodetic_datum
Topics referred to by the same term
shells Aircraft ordnance, weapons carried by and used by an aircraft Ordnance, Oregon, United States Ordnance Island, Bermuda Ordnance datum (from use in
Ordnance
Dam in Netherlands
a width of 90 metres (300 ft), at an initial height above Amsterdam Ordnance Datum of between 6.7 metres (22 ft) along the section at Friesland, and 7
Afsluitdijk
Elevation of a location above a standardized sea level
abbreviations in English are: AMSL – above mean sea level AOD or AODN – above ordnance datum ASL – above sea level FAMSL – feet above mean sea level FASL – feet
Height_above_mean_sea_level
British tidal observatory
observatory between 1915 and 1921 were used to define the reference level, Ordnance Datum Newlyn, for height measurement on the British mainland. The tide gauge
Newlyn_Tidal_Observatory
National mapping agency for Great Britain
recording heights the Ordnance Survey maintains an orthometric system referenced to Ordnance Datum Newlyn, which is a height datum defined by mean sea level
Ordnance_Survey
Vertical datum for orthometric heights
The North American Vertical Datum of 1988 (NAVD 88) is the vertical datum for orthometric heights established for vertical control surveying in the United
North American Vertical Datum of 1988
North_American_Vertical_Datum_of_1988
System of geographic grid references used in Great Britain
49 is N40, etc. The grid is based on the OSGB36 datum (Ordnance Survey Great Britain 1936). The datum was introduced after the retriangulation of 1936–1962
Ordnance_Survey_National_Grid
System to specify locations on Earth
standards, also includes a choice of geodetic datum (including an Earth ellipsoid), as different datums will yield different latitude and longitude values
Geographic_coordinate_system
Reference frame for geodesy on the continent
North American Datum (NAD) is the horizontal datum used to define latitude and longitude (horizontal coordinates) in North America. A datum is a formal description
North_American_Datum
Area of London, England
of the River Thames to reach a maximum height of 14.5 metres (48 ft) Ordnance Datum. The land was historically part of the Liberties of the Tower of London
Tower_Hill
Point with known height used in surveying when levelling
Broad arrow Geoid Levelling—a surveying technique that uses benchmarks Ordnance datum Spot height "Bench marks and levelling points". Heritage and History
Benchmark_(surveying)
Vertical datum used in Germany
changed its height system over to normal heights based on the datum of the Amsterdam Ordnance Datum, known as the German Mean Height Reference System, DHHN92
Normalhöhennull
Geodetic reference frame fixed to the Eurasian Plate
drift. The development of ETRS89 is related to the global ITRS geodetic datum, in which the representation of the continental drift is balanced in such
European Terrestrial Reference System 1989
European_Terrestrial_Reference_System_1989
Point of known height on a map
recorded beside it that represents its height above a given datum. In the UK this is the Ordnance Datum. Unlike a bench-mark, which is marked by a disc or plate
Spot_height
directions See intercardinal directions. ordnance datum (OD) Any vertical datum used by the British Ordnance Survey as the basis for reporting elevations
Glossary of geography terms (N–Z)
Glossary_of_geography_terms_(N–Z)
Village in Norfolk, England
through; in 1953 a large storm, measured at 5.12 m (16.8 ft) above ordnance datum hit the North Norfolk coast and the shingle ridge was mostly destroyed
Cley_next_the_Sea
Height of a geographic location above a fixed reference point
of 1/3, 1, and 2 arcseconds. Amsterdam Ordnance Datum, a.k.a. Normaal Amsterdams Peil (NAP), Dutch vertical datum Elevation profile Geodesy GTOPO30 a digital
Elevation
Geodetic reference system
the large geodetic systems, such as European Datum (ED50), North American Datum (NAD), and Tokyo Datum (TD), to provide a worldwide geo-data basis, Need
World_Geodetic_System
Geographical reference point from which various heights are measured
the land on which the tide gauge operates, or both. In the UK, the ordnance datum (the 0 metres height on UK maps) is the mean sea level measured at Newlyn
Sea_level
System to specify locations on Earth
Mercator WGS 84 Zone 16N") comprises a choice of Earth ellipsoid, horizontal datum, map projection (except in the geographic coordinate system), origin point
Spatial_reference_system
NATO global coordinate reference system
position reported in a modern datum usually cannot be misunderstood as using an old datum, and vice versa – provided the datums use different MGRS lettering
Military Grid Reference System
Military_Grid_Reference_System
Proposed skyscraper in London
height on the skyline, due to the buildings sharing the same AOD (Above Ordnance Datum) height of 309.6 metres. The building is the third design for a skyscraper
1_Undershaft
Hydraulic engineering structure in the Netherlands
closed at an anticipated water level of 2.25 metres above Amsterdam Ordnance Datum (NAP). Closure of the barrier takes between 20 and 60 minutes. The barrier
Stormvloedkering Hollandse IJssel
Stormvloedkering_Hollandse_IJssel
Municipality in South Holland, Netherlands
the lowest point on the Dutch polders, 7.01 meters below Amsterdam Ordnance Datum. The first reference to the area is from 1233, when on April 20, Floris
Waddinxveen
Topics referred to by the same term
diameter (also: O.D.), cylinder or pipe external diameter Ordnance datum, in Britain, an Ordnance Survey data point od (Unix), a Unix program Object Desktop
OD
Overview of GPS conversion formulas
referenced to the same geodetic datum. A geographic coordinate transformation is a translation among different geodetic datums. Both geographic coordinate
Geographic coordinate conversion
Geographic_coordinate_conversion
Town in South Holland, Netherlands
the lowest point of the Netherlands: 6.76 m (22.2 ft) below Amsterdam Ordnance Datum (mean summer sea level in Amsterdam). It is the hometown of Miss Universe
Nieuwerkerk_aan_den_IJssel
Broadcasting and telecommunications facility near Belfast, Northern Ireland
the west of the city of Belfast, on land 301 metres (988 ft) above Ordnance Datum (mean sea level) in Northern Ireland (grid reference J278727). It includes
Black Mountain transmitting station
Black_Mountain_transmitting_station
Topics referred to by the same term
Open and distance learning, gratis distance education Ordnance Datum Liverpool, an ordnance datum recorded at Victoria Dock in Liverpool, England OpenDaylight
ODL
Apartment building in Bristol, England
homes. The tower is 86.6 m (284 ft) high, or 98.37 m (322.7 ft) above ordnance datum (AOD). The tower overtopped the spire of St Mary Redcliffe during construction
Castle_Park_View
Village in Gloucestershire, England
is 300 metres (330 yd) from the village, 151 metres (495 ft) above Ordnance Datum (AOD), which is a similar elevation to much of the north. The south
Bibury
Hill and beauty spot in Surrey, England
Mole through the North Downs. Its summit, 224 metres (735 ft) above Ordnance Datum, is the 12th highest in Surrey. The western boundary of the hill is
Box_Hill,_Surrey
Official authority for lighthouses in England and Wales
specified its minimum depth ie. over the sill. At that time there was no Ordnance Datum or other accepted vertical benchmark. Therefore, the 1800 Act defined
Trinity_House
Gravity hill in South Ayrshire, Scotland
the bend overlooking Croy railway viaduct in the west (286 feet Above Ordnance Datum) to the wooded Craigencroy Glen (303 feet A.O.D.) to the east. Whilst
Electric_Brae
Mountain in Cambrian Mountains, Wales
massif itself is Pen Pumlumon Fawr, which is 752 metres (2,467 ft) above ordnance datum. Its other important peaks are Pen Pumlumon Arwystli, Y Garn, Pen Pumlumon
Plynlimon
Network of points with known positions used in geodesy and surveying
of control networks, particularly relative to fixed datums (such as that employed for Ordnance Datum Newlyn). Double run level techniques may be employed
Geodetic_control_network
Area of south London
station: an old Bench Mark SW, opposite, stated 360.6 feet (109.9 m) Above Ordnance Datum. Elm Wood Primary School, Carnac Street. Kingswood Primary School, Gipsy
Gipsy_Hill
Town in Cornwall, England
calculate the mean sea level at Newlyn, Ordnance Datum Newlyn, which became the vertical datum the Ordnance Survey uses to map altitudes throughout Great
Newlyn
given are nominal elevation above sea level in feet relative to the Ordnance Datum Liverpool. A former branch of the Wyrley and Essington Canal, the Essington
Water levels of the Birmingham Canal Navigations
Water_levels_of_the_Birmingham_Canal_Navigations
Vertical datum in the United States
National Geodetic Vertical Datum of 1929 (NGVD29), originally known as the Sea Level Datum of 1929, is the vertical datum established for vertical control
National Geodetic Vertical Datum of 1929
National_Geodetic_Vertical_Datum_of_1929
Flooding in southwest England and south Wales
maximum height of the water was 7.74 metres (25 feet 5 inches) above Ordnance Datum. Contemporary accounts of the flood were written by people such as the
1607_Bristol_Channel_floods
Town in Surrey, England
by the National Trust, including Colley Hill, 722 feet (220 m) above ordnance datum (OD) and Reigate Hill 771 feet (235 m) above OD. In Domesday Book of
Reigate
Vertical datum used in parts of Europe
according to the Normalhöhennull levelling system based on the Amsterdam Ordnance Datum Italy: −0.5 to −3.2 cm, orthometric height referring to Genoa Tide Gauge
Metres_above_the_Adriatic
Science of measuring the shape, orientation, and gravity of Earth
networks, space geodesy and terrestrial geodetic techniques, and the use of datums and coordinate systems. Geodesy began in pre-scientific antiquity, so the
Geodesy
Gated community in Surrey, England
strictly private. The summit is 255 feet (78 metres) above mean sea level (Ordnance Datum) and the minimum descent (notch/col) is 174 feet (53 metres). St George's
St_George's_Hill
Registry of geographic reference systems
Parameter Dataset (also EPSG registry) is a public registry of geodetic datums, coordinate reference systems, Earth ellipsoids, coordinate transformations
EPSG Geodetic Parameter Dataset
EPSG_Geodetic_Parameter_Dataset
Topics referred to by the same term
Archaeology Program of Texas A&M University Amsterdam Ordnance Datum (Normaal Amsterdams Peil), a geodetic datum Naphthylaminopropane, a monoamine-releasing drug
Nap_(disambiguation)
Village and parish in West Sussex, England
Rustington adjoins the English Channel, and is up to 7 metres (23 ft) above Ordnance Datum. It has three main recreation grounds and neither woodland nor fields
Rustington
Canal in Amsterdam
in the city center, is -0.40 metres (1 ft 4 in) from the Amsterdam Ordnance Datum. The Herengracht index is an economic index which records the price
Herengracht
Reservoir in Surrey
Parameter Value Top water level above ordnance datum 31.1 m Volume of water storage 35 million m3 Maximum depth of water 21 m Water area 202 ha Maximum
Wraysbury_Reservoir
Roman road in southern England
Chichester passes over the North Downs at Ranmore (200 m (660 ft) above ordnance datum) and the Greensand Ridge at Holmbury St Mary (260 m (850 ft) above OD)
Stane_Street
Longest river in Ulster, passing through Lough Neagh
The levels are regulated between 12.45 metres and 12.6 metres above Ordnance Datum, as defined in the Lough Neagh (Levels) Scheme 1955 (SR&O(NI) 1955/179)
River_Bann
City in South Holland, Netherlands
level, or rather below Normaal Amsterdams Peil (NAP) or 'Amsterdam Ordnance Datum'. The lowest point in the Netherlands (6.76 m (22.2 ft) below NAP) is
Rotterdam
Village in Berkshire, England
borough of Spelthorne in Surrey. Elevations vary between 22 and 20m Above Ordnance Datum with the Thames at 17m AOD 3 miles (4.8 km) south at Staines which is
Colnbrook
Strait separating the Isle of Wight from the mainland of England
incised its bed to a depth of at least 46 metres (151 ft) below current Ordnance Datum. The Purbeck Ball Clay contains kaolinite and mica, showing that in
The_Solent
Reservoir in Fife, Scotland
hectares (1,380 acres) and its surface level is 146 metres (479 ft) above ordnance datum. Most of the catchment area is to the south and south-west of the loch
Cameron_Reservoir
Village and civil parish in West Sussex, England
village at between 128 ft (39 m) and 276 ft (84 m) above sea level (Ordnance Datum) and the South Downs rise to 560 ft (170 m) and 594 ft (181 m) to west
Findon,_West_Sussex
3-D coordinate system centered on the Earth
2010. ECEF datum transformation Archived March 22, 2007, at the Wayback Machine Notes on converting ECEF coordinates to WGS-84 datum Datum Transformations
Earth-centered, Earth-fixed coordinate system
Earth-centered,_Earth-fixed_coordinate_system
Transmitter station in Angus, Scotland
contained within a GRP shroud. These antennas have an average height above Ordnance Datum of 547 metres (1,795 ft). It is owned and operated by Arqiva. It was
Angus_transmitting_station
Prime meridian used by the OSGB36 reference system
The United Kingdom Ordnance Survey Zero Meridian is the prime meridian used by the Ordnance Survey (OSGB36 datum). It is about six metres to the west
United Kingdom Ordnance Survey Zero Meridian
United_Kingdom_Ordnance_Survey_Zero_Meridian
National park in southern England
Wait [249 165] near Nomansland, form the highest point (129 m above Ordnance Datum (OD)) in the New Forest Henderson, Norman (2007). A Walk Around the
New_Forest
River in Wales and England
summer months, the river level at Hereford is 152 feet (46 m) above ordnance datum (AOD), and Hereford is about 70 miles (110 km) from the river mouth
River_Wye
Town in Limburg province, Netherlands
"Wat is het Normaal Amsterdams Peil (NAP)?" [What is the Amsterdam Ordnance Datum]. rijksoverheid.nl (in Dutch). Government of the Netherlands. Archived
Vaals
City and unitary authority in Devon, England
sea level to a height, at Roborough, of about 509 feet (155 m) above Ordnance Datum (AOD). Geologically, Plymouth has a mixture of limestone, Devonian slate
Plymouth
are no points below mean sea level, which diverges locally from Malin ordnance datum. There are reclaimed lands below high tide level and requiring valve
Extreme_points_of_Ireland
Reference frame for European geodesy
ED50 ("European Datum 1950", EPSG:4230) is a geodetic datum which was defined after World War II for the international connection of geodetic networks
ED50
Hill in Cornwall, England
north Cornwall, England, UK. The summit is 308 metres (1,010 ft) above ordnance datum. Condolden is two miles (3 km) southeast of Tintagel village and is
Condolden
Village and parish in Surrey, England
underlain by a mixture of gravel and clay. Elevations range from 18m Above Ordnance Datum to 33m. Birchwood Road and part of Station Road has been designated
West_Byfleet
Wilhelm I on 22 March 1879. This point was derived from the Amsterdam Ordnance Datum and marked off 37 meters over zero. Wilhelm Foerster led the observatory
Berlin_Observatory
Village and parish in West Sussex, England
River Arun and the land is low but well-drained at 2 to 7 metres above Ordnance Datum (sea level). The parish includes HM Prison Ford, otherwise known as
Ford,_West_Sussex
Telecommunications site near Oxford, England
telecommunications facility, situated on land 129.5 metres (425 ft) above Ordnance Datum (mean sea level) to the north east of the city of Oxford, in Oxfordshire
Oxford_transmitting_station
Freshwater lake in the Scottish Highlands
with an average depth of 11.4 m (37 ft), and is 214 m (702 ft) above Ordnance datum. A water sports centre was set up on Loch Insh in 1969 by Clive Freshwater
Loch_Insh
River in Lancashire and Greater Manchester, United Kingdom
Environment Agency 2006, p. 7 Environment Agency 2006, p. 8,9 Above Ordnance Datum (mean sea level) Environment Agency 2006, p. 7,8 Environment Agency
River_Irwell
English resort and harbour
artificially raised with extra shingle to a height of 7.5 metres (25 ft) above Ordnance Datum; subsequent management by the Environment Agency has involved regular
West_Bay,_Dorset
Chinese global navigation satellite system
Level Datum 1929 OSGB36 Ordnance Survey Great Britain 1936 SK-42 Systema Koordinat 1942 goda ED50 European Datum 1950 SAD69 South American Datum 1969 GRS
BeiDou
Canal in Amsterdam, Netherlands
in the city center, is 0.40 metres (1 ft 4 in) below the Amsterdam Ordnance Datum. If ice forms in winter, there is a possibility of skating on the Amsterdam
Keizersgracht
Topics referred to by the same term
overdrive vehicle transmission manufactured by Ford Motor Company Above ordnance datum, a level expressed as a height above mean sea level Adult onset diabetes
AOD
Architectural structure in Scottish Borders, Scotland
2020 equivalent based on CPI Now known as Windlestraw, built in 1906 Ordnance Datum Newlyn "THE KIRNA, B8323". Historic Environment Scotland. Archived from
The_Kirna
Town in Somerset, England
measured at 1.3 m (4 ft 3 in) above the 7.4 m (24 ft 3 in) tidal level Ordnance Datum (OD) at 20:25, and 1.3 m (4 ft 3 in) measured at Avonmouth. The wind
Burnham-on-Sea
Market town in North Yorkshire, England
Times. The town lies between 400 and 500 feet (120 and 150 m) above ordnance datum. The valley of the River Ure below the town has an altitude of 325 feet
Middleham
Town in Surrey, England
gravel deposits have a typical maximum elevation of 14 m (46 ft) above ordnance datum (AOD) and are as little as 0.5 m (1.6 ft) above the surrounding floodplain
Staines-upon-Thames
Thames-side village, Berkshire, England
varying elevations, ranging from 51 to 185 m (167 to 607 ft) above ordnance datum (AOD) at Streatley Warren, a hilltop point on its western border forming
Streatley,_Berkshire
Projecting landmass of Antarctica
The highest peak is Mount Elkins at 2,300 metres (7,500 ft) Above Ordnance Datum (conventional sea level). Geology of Enderby Land Mawson Station History
Enderby_Land
River in East Sussex and Kent, England
rises in the High Weald of Sussex, at around 490 feet (150 m) above ordnance datum (AOD), and descends rapidly. It is joined by the River Dudwell at Etchingham
River_Rother,_East_Sussex
Town and civil parish in Surrey, England
the civil parish is at Botley Hill, which at 269.6 m (885 ft) above ordnance datum is the highest point on the North Downs. The oldest outcrops in the
Oxted
Building in Amsterdam
so-called second sand layer, approximately 20 meters below Amsterdam Ordnance Datum (NAP). Across the full surface of the basement, a concrete foundation
Beurs_van_Berlage
Ship canal in the Netherlands
is dredged to a depth of 14.5–16 metres (48–52 ft) below Amsterdam Ordnance Datum. It is this channel, together with the dredged channels in the North
Nieuwe_Waterweg
Village in Cambridgeshire, England
river valley between 14 metres (46 ft) and 32 metres (105 ft) above ordnance datum and the parish covers an area of 1,150 acres (470 hectares). The boundary
Little_Paxton
Town in Surrey, England
highest point in the parish at Epsom Downs is 155 m (509 ft) above ordnance datum. The High Street defines the main west–east axis of the town and runs
Epsom
Power station near Peninver, Scotland
single loch, with the surface levels of both at 381 feet (116 m) above Ordnance datum (AOD). They cover an area of 0.51 square miles (1.32 km2) and drain
Kerry Falls Hydro-Electric Scheme
Kerry_Falls_Hydro-Electric_Scheme
Level Datum 1929 OSGB36 Ordnance Survey Great Britain 1936 SK-42 Systema Koordinat 1942 goda ED50 European Datum 1950 SAD69 South American Datum 1969 GRS
Earth's_circumference
Proposed hydroelectric power station in Scotland
lies along the Great Glen of Scotland, at an elevation of 29 m above ordnance datum (AOD). Above its north-western shore, the Munro mountain Sròn a' Choire
Coire_Glas_power_station
Cartesian geographic coordinate system
choice of map projection (with specific parameters), a choice of geodetic datum to bind the coordinate system to real locations on the earth, an origin
Projected_coordinate_system
Bank side reservoir in Berkshire, England
Parameter Value Top water level above ordnance datum 35 m Volume of water storage 37 million m3 Maximum depth of water 23 m Water area 192 ha Maximum height
Queen_Mother_Reservoir
Two power stations, the coal-fired station closed in 2019
ordnance datum by filling from borrow pits on site, but the coal store and cooling tower area remain at the original level of 4.87m (16 ft) ordnance datum
Cottam_power_stations
Town in Surrey, England
"Whitehill Tower, War Coppice Road in Caterham Valley" to 110m Above Ordnance Datum along the railway track, immediately below Croydon Road roundabout,
Caterham
travel, tourism, insurance
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