Tunisia became independent of France in 1956, and declared
itself a republic the following year. The official mapping organization
is the Office de la Topographie et de la
Cartographie (OTC), Tunis, established in 1974. OTC is
responsible for geodetic, topographic, aerial photographic
and cadastral survey and publishes topographic and cadastral
maps and urban plans. Prior to the establishment of OTC,
topographic series had been produced at scales of 1:50,000;
1:100,000 and 1:200,000 by the French Institut Géographique
National and its predecessor, the Service Géographique
de l'Armée. The former are in the IGN'sType-1922 style, on
a Lambert conformal projection, Clarke 1880 ellipsoid, and
date from the 1950s. Earlier sheets from the 1930s, were
often based on plane-table surveys undertaken in the 1890s;
these maps were on the Bonne projection. The 1:50,000 scale
mapping covered the northern half of the country, while
1:100,000 scale maps covered the middle zone and extended
further south. The 1:200,000 scale map covered the whole
country in 46 sheets on the Bonne projection.
New mapping programs using photogrammetric techniques
were initiated by OTC in the 1970s, and new series
were in progress at scales of 1:25,000; 1:50,000 and
1:200,000 during the 1980s with the help of the Japanese
Geographical Survey Institute, and with new aerial photography
flown by the Pacific Aerial Survey Co.
In 1992, a revised program was established to map the
country at scales of 1:25,000; 1:50,000 or 1:100,000
according to economic development of the region, and with
the addition of a complete modern cover at 1:200,000 scale
in 2006. The fruition of this plan, however, depends on securing funding.
Soviet military topographic mapping of Tunisia is available at the following scales: 1:1,000,000 (3 sheets, complete coverage, published 1975-1984);
1:500,000 (7 sheets, complete coverage, published 1970-1987); 1:200,000 (46 sheets, complete coverage, published 1977-1988); 1:100,000 (116 sheets, primarily complete
coverage, published 1973-1986) and a city (1:25,000) topographic map of Tunis published in 1976. These products are available in print, digital raster and digital vector
GIS formats from East View Geospatial.
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