The D2M2 model is a management tool that identifies optimal networks of dredging, transfer, and disposal sites to inform dredged material management plans. It effectively analyzes up to millions of combinations of dredging and placement sites to find optimal allocations of specific volumes of dredged material between sites. It optimizes management value under multiple considerations, including sediment type, dredging equipment, transportation paths, storage needs, material use, environmental concerns and other factors.
The D2M2 software package includes a suite of three modules meant to identify optimal dredged material management solutions given user-specified inputs about the sites, links, equipment and decision-making criteria such as cost and environmental benefit. The three modules, the Geographical Information System (GIS), Linear Programming System (LPS), and Decision Support System (DSS), allow managers to create sites and routes in GIS, enter system properties and preferences and calculate optimal dredging networks, and explore and rank dredging options using a multi-criteria decision analysis, respectively.