The grouting of foundation rock is a critical constructional technique for most of the mega projects across the world. Grouting operations come up with the challenges of pre-planning, visualization, presentation of data, quantity control, cost effectiveness and budget management. Unless properly managed, the above factors can contribute to project complexity and cost overruns. This paper deals with the applic ation of innovative Arc Geographical Information System (ArcGIS) to effectively present the GIN (Grouting Intensity Number) data and its interpretation. The case study is being carried out on Tarbela4 ~(th) Extension Hydropower Project during the foundation grouting of Omega Thrust Block for Penstock area. Data taken from the grouting record are analyzed and presented through GIS. By assigning the locations ( i.e ., coordinates or project station number) and boreholes plan; the details for each primary, secondary and tertiary boreholes are displayed through GIS. The final data metrics retrieved from the grouting station comprises of borehole grouting logs, total grout takes, grouting stages suspended, etc. The GIN grouting report obtained from the GIS user interface delineates information on 1) ?Grout consumption per primary versus secondary holes; 2) Showing areas of high grout takes; where secondary, tertiary and quaternary boreholes are required; 3) The grouting stages remained unsuccessful. The final interpretation of GIS data is used to avoid unnecessary secondary, tertiary and quaternary holes executions which lead to the completion of the project within the given time frame and allocated resources.
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