Abstract: Many challenges are being faced by wireless sensor networks in general and that of large scale in specific. Location accuracy and scalability in information dissemination are important challenges facing large scale wireless networks. Hexagonal Two Tier Data Dissemination (HTTDD) is an approach that disseminates the data between multiple sources and multiple mobile sinks and targets these two challenges. Instead of propagating the query message from sinks to all sensor nodes in the field to setup the data forwarding information, HTTDD uses a hexagonal grid structure so that only sensor nodes at the grid vertices need to have the forwarding data. Once a sensor node detects an event of interest it becomes a source which proactively builds a hexagonal grid and sets up the forwarding route consisting of the sensor nodes closest to the grid vertices hence called dissemination nodes. The path taken by a query issued to a source from a sink consists of two tiers. The first tier is within the coverage area of the sink and the second tier is the pass made of the dissemination nodes constituting the grid structure. The performance of hexagonal TTDD evaluated through detailed analysis and simulation is presented in this study and compared to the squared TTDD approach to prove the improvement added by HTTDD.