GeoSWMM Tools
The GeoSWMM Tools is a set of dynamic tools that enable the user to calculate several input properties for a SWMM model. These properties are associated with the physical and hydrologic characteristics of the subcatchments and conduits in a model. These tools efficiently prepare and manage these data, which can then be assigned to the respective SWMM object property fields during model building. Along with these pre-processing tools, GeoSWMM integrates some post-processing tools. The current version of the GeoSWMM (v 5. 0) also integrates the 2D modeling approach and respective pre-processing tools to prepare the 2D network. A separate chapter has been included in this version elaborating the GeoSWMM 2D modeling tools. Here in this chapter, all the pre-processing tools that are integrated with GeoSWMM to process and prepare input data and some of the post processing tools which help to visualize the model results with its inherent capabilities.
Table 12: Summary of the GeoSWMM Tools and their Applications
Pre-processing Tools | Object Category | Calculated Properties |
|---|---|---|
Watershed Delineation Tool | Subcatchment | Subcatchment shape and area, and subcatchment outlet position |
Watershed Delineation Tool | Conduit | Conduit (open channel) shape and length |
Link Inlet-Outlet Assignment Tool | Conduit | Conduit Inlet and Outlet Nodes Name |
Network Analysis Tool | Conduit, Junction | Network connectivity check |
Slope Calculation | Subcatchment | Average surface slope in percentage |
Imperviousness Calculation | Subcatchment | Percentage of impervious area |
Width Calculation | Subcatchment | Characteristic width of overland flow-path |
Land Use Properties | Land Use | Land Use reclassification |
Land Use Properties | Subcatchment | Manning's roughness coefficient for impervious and pervious area; Depth of depression storage for impervious and pervious area |
Conduit Roughness | Conduit | Manning's roughness coefficient |
Post-processing Tools | Object Category | Functionalities |
Extract Elevation Data | Conduit, Junction | Extract elevation data and shows Ground Level at the Profile Plot View. |
Flood Mapping Tool | Inundation Depth and Flood Boundary Layer | Generates Flood Boundary Layer based on GeoSWMM 1D simulation. |