For the statistical documentation of the regions, no uniform basis was available. As far as water conservation area ordinances were concerned, atlas supplements in the scale 1:5000 were available. Information concerning wells was recorded and documented with reference to the demarcation from iso-distances, (instigated after the 1946 allied ordinance). Ordinance information for other areas was taken from the Berlin map 1:5000 and then digitalized. The precision given for the Berlin region is due to the availability of the map in scale 1:5000. In contrast, information for the conservation zones in the Brandenburg region had to be taken from smaller scale maps, an exact statement for single sites is not possible.
This map gives an overview. For judicial binding information use the original maps from the ordinances
The project essentially used the graphic software "Mercury" of the Fa. CGM. Basis was the "Map of Berlin 1:5000 – screen data (K5 RD) – " the Ministry of Urban Development, Dept. III.
The selected map scale of 1 : 50,000 does not allow Berlin Public Water Companies wells to be depicted individually, but only as well galleries. The depiction of Conservation Zone II in the former West Berlin and the captation zone (Zone I) are also missing.