In InfoSWMM, the "GIS Gateway" is an essential feature for integrating geographic information system (GIS) data with the software's stormwater modeling capabilities. Here's how it functions:
Functionality of the GIS Gateway in InfoSWMM:
- Data Import and Export:
- Import: Users can import various GIS data formats like shapefiles, AutoCAD files, or GIS databases into InfoSWMM. This data can be transformed into model elements such as drainage networks or catchments[^1][^2].
- Export: The gateway also facilitates exporting model data and simulation results back into GIS formats, aiding in visualization, further analysis, or reporting[^1][^2].
- Shapefile Creation:
- Tool Usage: The "Create Shapefile" tool within the GIS Gateway enables the generation of ESRI Shapefiles from InfoSWMM data. This tool populates attribute tables with model-specific data and can be applied to the entire model or just the active network[^2].
- Practical Application: Useful for creating shapefiles that detail model components or for calibrating models by comparing GIS data with simulation outcomes[^2].
- Model Setup and Calibration:
- Data Integration: The GIS Gateway helps in pre-processing data for model setup by directly importing spatial data for network configuration, land use, or catchment delineation[^1][^2].
- Calibration: After simulations, results can be exported to GIS for calibration, where model outputs are compared with observed data to adjust model parameters[^2].
- Specific Use Cases in Documentation:
- Break Nodes: For scenarios involving break nodes in force mains, the GIS Gateway assists in precise node placement and attribute setting[^3].
- Pump and Force Main Systems: It supports the setup by integrating spatial data for defining pump stations, force mains, and operational rules[^3].
Practical Example:
- In urban stormwater modeling, you could use the GIS Gateway to import a city's existing drainage network shapefile into InfoSWMM. Post-simulation, you might export results like flow velocities or flood extents as shapefiles for overlay with other GIS data to assess impacts or for presentation purposes.
Citations:
[^1]: Innovyze. (n.d.). InfoSWMM Help Documentation. Retrieved from innovyze.com.
[^2]: SWMM 5 Mini Blogs. (2019). Using the GIS Gateway in InfoSWMM. Retrieved from swmm5.blogspot.com.
[^3]: SWMM 5 Mini Blogs. (2019). Modeling Break Nodes in Force Mains with InfoSWMM. Retrieved from swmm5.blogspot.com.
Please note, the exact features and their implementation can vary with different versions of InfoSWMM, but the foundational aspects of the GIS Gateway remain consistent.
