Development of GeoSWMM 2D Projects
GeoSWMM 2D modeling tools enable the user to create and assign attributes for 2D features in a GeoSWMM project. These tools assist users in defining a boundary layer, creating all the associated nodes, and links to generate the 2D mesh, connecting the 2D features with the 1D features through different connection options, and generate flood extent raster. Each tool requires prerequisite layer(s) to process and generate the next level of layer(s). Users need to follow the hierarchical process established within these tools to generate the subsequent output layer(s).
Table 20: Pre-requisite and Output layers for 2D Modeling Tools
2D Modeling Tools | Prerequisite layer(s) | Output layer | Output layer geometry type |
|---|---|---|---|
Define Boundary Layer | No layer is required |
| polygon |
Create 2D Nodes | Boundary Layer | Nodes 2D | Point |
Create 2D Layers | Nodes 2D | Junctions 2D | Point |
Conduits 2D | polyline | ||
Cells 2D | polygon | ||
Connect 1D-2D | Junction 2D | Orifices 2D/Weirs 2D | polyline |