B.3 Boundary Layer Properties
| Resolution | Defines the size of each 2D cell. It is measured from the distance between 2D nodes (feet or meters) |
| Cell Type | Type of cell geometry, i.e. Hexagonal |
| Roughness | Manning's roughness coefficient |
| Seepage | Rate of seepage loss into surrounding soil mm/hr or in/hr |
*only applicable for GeoSWMM 2D Modeling