Nivellement General Guyanais 1977
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Nivellement General Guyanais 1977 Open
Datum Details [VALID]
Name: Nivellement General Guyanais 1977
Code: 5153
Type: vertical
Usage:
Usage Details
Scope: Geodesy, engineering survey, topographic mapping.
Extent:

Origin: Mean sea level 1936 at Cayenne. Origin = marker BM35 on stone on St Francois battery, Cayenne, with defined elevation of 1.64m above msl. NGG1977 height 0.00m is 1.96m above sounding datum defined at Cayenne in 1936 by SHM.
Realisation Method:
Publication Date: 1977