PA Aquatic Resource Restoration Conference 2026: Past, Present and Future

Two-dimensional hydrodynamic models have become an indispensable tool for evaluating spatial patterns of flow velocity and boundary shear stress within stream channels and floodplains during flood events. The design of resilient stream restoration projects requires accurate prediction of these hydraulic forces to ensure channel stability, floodplain integrity, and long-term project performance under a range of flood conditions. Recent research has demonstrated that two-dimensional models can also be used to predict the type and distribution of wetland habitats that may evolve in response to flood-driven velocity patterns, linking hydraulic processes to ecological outcomes. As a result, two-dimensional modeling has emerged as a critical component of restoration design, enabling practitioners to evaluate whether floodplains are sufficiently wide and hydraulically connected to promote low-stress, retentive channel–floodplain systems. When applied appropriately, these models support restoration designs that balance flood resilience, geomorphic stability, and habitat development across a range of watershed settings.