This project seeks to develop enhanced guidelines for marsh spatial planning supported by a geospatial visualization tool that allows stakeholders to see outcomes of different marsh interventions such as vegetation enhancement, thin layer placement, oyster reef (living shoreline) construction, or cuts through marsh terrain. To do so, we will integrate results from previous US Coastal Research Program (USCRP) projects, conduct a field campaign in coastal Georgia, and develop a high-resolution hydrodynamic model for coastal Georgia. We will use the field study results and previous USCRP proposals to create a series of marsh scenarios for numerical simulations. These scenarios will provide the basis for marsh spatial planning guidelines that will facilitate input from multiple stakeholders to form a geospatial planning application. The application will confer multiple benefits of marsh interventions and re-alignments and provide trade-offs between options.