Guyana, formerly British Guiana, became independent in
1966 and was declared a cooperative Republic in 1970.
In 1942, the United States Army produced some photomaps
of British Guiana at 1:62,500 scale.
In the mid-1940s a 1:125,000 series of conventional
colored maps was issued (AMS E691). The principal
geodetic framework for the country was established by the
Inter-American Geodetic Survey (IAGS), and from 1967 this
was densified and extended by the British Directorate of
Overseas Surveys (DOS) (now Ordnance Survey International
(OSI)). The basic scale of mapping for the entire
country is 1:50,000, provisional mapping at this scale
was issued by DOS from the early 1950s, and by the mid-1960s
had covered about one-sixth of the country, mainly
the densely settled coastal plain. A new program then was
started with Canadian assistance aimed at completing
1:50,000 scale cover of the country with 50 ft interval
contoured mapping. The work was carried out by Terra
Surveys of Ottawa in cooperation with the Lands and
Surveys Department (LSDG), Georgetown. This program
was completed in 1981. Sheets are monochrome and each
covers a 15' square. Projection is Transverse Mercator,
Hayford international ellipsoid, and an edition was produced
with UTM grid added by DOS.
In the period 1976 to 1987, DOS undertook a joint mapping
project with LSDG in the coastal area, and issued a series of
over 400 1:10,000 scale controlled photomosaics of the
coastal plain (DOS 240M) and 120 sheets of controlled photomosaics
at 1:5,000 scale of Georgetown, New Amsterdam
and part of the coast north of the Essequibo River mouth
(DOS 140M). Then between 1987 and 1990, 44 1:50,000
scale sheets of the coastal plain (DOS 440) were recompiled
and published by OSI for LSDG. Contours are at 20 m intervals.
1:2,500 scale mapping of Georgetown and other settlements
(DOS 040) was issued in the late 1970s.
Soviet military topographic mapping exists at the following scales: 1:1,000,000 (5 sheets, complete coverage, published 1966-1990) and
1:500,000 (10 sheets, complete coverage, published 1964-1987). These products are available in print, digital raster and digital vector GIS formats
from East View Geospatial.
Copyright © 2014 East View Geospatial, Inc.