At the end of the 1960s, the Venice Water Authority Hydrographic Office carried out a survey of the lagoon bed and produced the relative 1:5000 Bathymetric Map of the Lagoon, updating the previous map dating from 1932.
During the 1970s, responsibility for 1:5000 maps was transferred to the Regional Authorities and the Veneto Region produced the 1:5000 Regional Technical Map.  
At the beginning of the 1990s, the Information Service (in collaboration with the Venice Water Authority Hydrographic Office, CNR Institute for Grand Mass Dynamics and Italian Military Geographic Institute of Florence) updated the lagoon bathymetry and at the end of the 1990s (in collaboration with the Veneto Region) carried out a new survey campaign, producing the 1:5000 Technical Map of the Lagoon.

Finally, at the beginning of the 2000s, the Information Service carried out a bathymetric, topographic and photogrammetric survey campaign resulting in production of a new version of the 1:5000 Digital Map of the Venice Lagoon.

To delimit urban areas liable to flooding caused by high waters precisely and therefore contribute to preparation of interventions to raise the lowest lying areas of the city centre (delegated to the local authorities), the Information Service produced 1:5000 maps with altitudes for Venice, Chioggia, Burano, Murano and Mazzorbo.  

Recently, in collaboration with Venice Province and the CNR, the Information Service produced a 1:20000 Geomorphologic Map of Venice and Lagoon Boundary Area.

In the context of the safeguarding interventions and in relation to the need for ever more detailed and up-to-date information on the ecosystem area, the Information System carried out a survey of the lagoon area with periodical aerial photography and set up a department for the stereo-rendering of aerial photographs, creating the necessary pre-conditions to respond rapidly to any cartographic request regarding specific or limited portions of the area.

Finally, the Information Service is also responsible for delimiting and defining areas of State-owned property in the lagoon in collaboration with the Venice Property Valuation Office; for acquiring and organising data on the morphometric characteristics of the hydraulic network of the drainage basin (in collaboration with the land reclamation consortiums) and for setting up a database of historic maps of the lagoon, with the help of the Venice, Treviso and Padua State Archives.

Another example of useful and positive institutional collaboration is the Map of Archaeological Risk, produced by the Veneto Superintendency for Archaeology in close collaboration with the Information Service and giving an overview of the distribution and characteristics of archaeological sites in the lagoon, thus providing advance information on the relationships and possible interferences between the safeguarding interventions and the archaeological heritage of the lagoon.