Ordnance Survey of Ireland (Suibhéireacht Ordanáis)
(OSI) in Phoenix Park Dublin has been the national
mapping agency since the creation of the Republic in 1922.
There is a long history of operations by British mapping
agencies in Ireland prior to this date, and six-inch mapping
was established as a basic scale from 1824, complete cover
being achieved in 1846. 1:63,360 scale mapping was started
in 1855 and completed in 1895, and a 1:2,500 scale County
series map was completed between 1887 and 1913 for the
whole of Ireland apart from mountains and moorland areas.
Larger scale town maps were also compiled and Ireland
was one of the best mapped countries at the start of the
However after independence very little new topographic
mapping was carried out for 40 years until the instigation
of a new mapping policy in 1964. This policy introduced a
new integrated national family of map scales, all based upon
the Irish grid and a new first order triangulation completed
by the mid-1960s. 1:1,000 scale was adopted for urban areas
with more than 1,000 population, 1:2,500 was established as
a basic scale for the whole of Ireland, and a derived and
contoured 1:5,000 scale was also started. The conversion and
field update of County series mapping progressed relatively
slowly in terms of published mapping, and a decision was
implemented in 1989 to abandon this program to move
to new basic scales derived from entirely new surveys, and
to publish a range of customer-oriented digital products,
based upon three separate vector map databases. It was also
decided to scan the whole of the published archive of County
series and Irish grid mapping, to create a seamless rectified
raster database using the Tellus system.
Soviet military topographic mapping of Ireland exists at the following scales: 1:1,000,000 (3 sheets, complete coverage, published 1985-1987);
1:500,000 (7 sheets, complete coverage, published 1984-1985); 1:200,000 (31 sheets, complete coverage, published 1967-1985); 1:100,000 (89 sheets, complete coverage,
published 1979-1980) and a city (1:10,000) topographic map of Dublin published in 1980. These products are available in print, digital raster and digital vector GIS formats
from East View Geospatial.
Copyright © 2014 East View Geospatial, Inc.