Errors inherent in the digitizing process inevitably lead to variations in the locations of boundaries of neighboring cadastral blocks. It then becomes necessary to adjust the digitized data to compensate for discrepancies and discontinuities in the digitized cadastral information. For this purpose it is proposed that a procedure commonly used in aerial triangulation be adopted. Each map is regarded as an equivalent to a single photograph and a set of neighboring maps as a photogrammetric block. A system of appropriate equations is formed to adjust the “block”. Points lying on boundaries of adjacent cadastral blocks are the substitute for the transfer and tie points used in photogrammetry, and traverse or trigpoints available on the maps constitute the control data. The results of this procedure are: “orientation” data for each map to transform its content to the state plane coordinate system and adjusted coordinates of points positioned on boundaries shared by neighboring maps.