Blank administrative map of the region and department of the French Guiana, France, for geo-location purpose, with arrondissements boundaries.
Own work

Shorelines and lakes : NASA Shuttle Radar Topography Mission (SWBD) (public domain) ;
Landsat 7 ETM+ imagery ;
Additional reference for confirmation: Géoportail.
Eric Gaba (Sting - fr:Sting)