The present paper has with principal objective show the geologic/geomorphologic evolution of the coastal plain of the Bertioga, coast of the State of São Paulo and estimate the transformations in its environment, as a result of the growing human occupation in its plain coast.

Bertioga remained little impacted until approximately two decades behind. After the construction of the new roads to the north coast it started the process of devastation and pollution of its beaches, showing a modification of the environment, consequence of crescent occupation that has been occurring along of these roads and at the coast region itself.

With the use of the aerial photographs and existing maps it has been possible to make geomorphology and geology mapping, as well as evolution of the landscape use and occupation of four periods: 1962, 1977, 1986 and 1994. The information generated by the laboratory researches, in place visits and principal impacts verified , were registered in the synthesis map, entitled: "Integrated Synthesis Map".

On the geologic/geomorphologic maps are shown information of the litology and characteristics of the coastal relief.

In the synthesis map are shown information about the natural characteristics face to the human modifications. With the information available in the maps it is possible to make descriptions of the process in the Bertioga's coastal region and the results on the coastal relief.

To make the maps it was used Geographical Information's Systems such as: AutoCAD, ARCVIEW, ARCINFO and IDRISI.