A systematic collation of geotechnical information has given engineering geology an important role in the renewal of London's docklands. It has provided a ready source of information to other parties and allowed an improvement in the understanding of the regional engineering geology of the area. A microcomputer database, termed GEODASY, was devised specifically to store the data. This allowed for a projected 10 000 boreholes and holds both stratigraphic as well as field and laboratory test data. The data can be retrieved in a variety of formats. The basic output is a tabulated format which collates and unifies the presentation of the data. Other graphical output produces scaled plans or long sections while preprocessing by the system during enquiry gives X-Y plots allowing a high level of interpretation of the data. The approach could be similarly used wherever there is a strongly defined area of interest.