The circulation model, ADCIRC, within the COE Surface Water Modeling System, was performed to quantify potential impacts in the Bay Joe Wise system from the proposed marsh restoration. Impacts could occur that would alter circulation processes resulting in changes in sedimentation patterns. In addition, the results were evaluated in terms of maintaining sufficient water levels and flow within the bay system to support the newly created marsh. A 2-D mesh was created using the measured topographic and bathymetric data. The primary tidal forcing functions for this area were input along the model's gulf boundary and water levels and flow velocities were simulated throughout the mesh. Field data from measured current and tide data were used to calibrate the model. To evaluate the designs, the 2-D meshes were modified for each marsh fill template, and circulation modeling for each design was conducted. Results were evaluated to ensure the designs did not greatly reduce flow, increase (causing potential scour) or decrease (causing potential deposition) water velocities significantly, or cause significant changes to water elevations through the bay system. The modeling results indicated that significant changes to the flow through the bay system are not anticipated provided the primary flow-way leading from the bay's west side to Pass Chaland is maintained. Other observed impacts to the simulated water levels and velocities were minor and localized.