ordnance datum BrE , OD (Abkürzung)

The land is fairly level, being for the greater part a little more than 100 ft. above ordnance datum.

Wokefield Parish varies between 40m and 95m above sea level as measured against ordnance datum.

These antennas have an average height above Ordnance Datum of .

A spot height may be expressed as AOD for "above ordnance datum".

Heights given are nominal distance above sea level in feet relative to the Ordnance Datum Liverpool.

It reaches a high-point of 152m Ordnance Datum just before entering Banstead.

It's 7.01 meters below Amsterdam Ordnance Datum.

A further storm surge in 1978 measured 4.19 metres above ordnance datum and the protection measures confined flooding to the marshes and A149 coast road.

Ordnance Datum Newlyn, the mean sea-level height datum in Great Britain.

Ordnance Datum, a vertical datum used in Great Britain as the basis for deriving altitudes on maps.

Tunnel Datum is a datum based on Ordnance Datum used in designing tunnels which pass below sea level.

Elevations range between 114m AOD to 54m Above Ordnance Datum with many ridges and folds in the land creating an undulating terrain.

Within the boundaries of this municipality lies the lowest point of the Netherlands: 6.76 m (22.2 ft) below Amsterdam Ordnance Datum (mean summer sea level in Amsterdam).

Elevations range from 230m Above Ordnance Datum in the southwest extreme, "Whitehill Tower, War Coppice Road in Caterham Valley".

In 1878 reference heights were taken fom the Amsterdam Ordnance Datum and transferred to the New Berlin Observatory in in order to define the Normalhöhenpunkt of 1879.

Normaal Amsterdams Peil (NAP) or Amsterdam Ordnance Datum is a vertical datum in use in large parts of Western Europe.

This stretch of the valley is broad and flat bottomed with the valley bottom being around 50m above ordnance datum and the sides rising to 150m above ordnance datum.

The Bill requires the development corporation to operate the barrage so that the water immediately behind it should be maintained at a level between 4 m and 4.5 m above ordnance datum except in certain circumstances defined in the Bill.

In Northern Ireland, OD for the Ordnance Survey of Northern Ireland is Belfast Ordnance Datum, the MSL at Clarendon Lock, Belfast between 1951 and 1956.

The Ordnance Survey, the United Kingdom's mapping agency, used to base all elevations including mapped contour lines and spot heights on the mean sea level at Newlyn defined by this benchmark (see Ordnance Datum Newlyn).

The geopotential height of this point was calculated in 1986 as part of the United European Levelling Network (UELN), based on the Amsterdam Ordnance Datum, which represents the average level of the North Sea.

Since 1 January 2000 the whole of Germany has 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.

Once the repairing stopped, it became easier for waves to get through; in 1953 a large storm, measured at 5.12 metres above ordnance datum (see North Sea flood of 1953) hit the North Norfolk coast and the shingle ridge was mostly destroyed.

Elevations of the central part of Downside, on all sides of the Common vary from 36m AOD in the southwest to 27m Above Ordnance Datum in the northeast, while the common itself ranges between 29-33m AOD.

The land rises on both sides of the Brook which runs through the parish from north-east to south-west from 16 feet above ordnance datum at the Brook to 66 ft. on the north-east side, and 50 ft. on the south-west.