About iMOD - iMOD
iMOD is freely available and open source software for a wide range of ground water modelling tasks. iMOD consists of user interfaces, pre- and postprocessing software and computational cores based on USGS MODFLOW source code to support analysis of groundwater flow.
Development of iMOD started in 2006. Since the end of 2021 two software products are distinguished: iMOD 5 and iMOD Suite.
Comparison iMOD 5 and iMOD Suite
The proven technology and expertise of iMOD is consolidated within iMOD 5. iMOD 5 supports structured calculations with MODFLOW2005 and structured MODFLOW 6 and can be coupled to the unsaturated zone model MetaSWAP. The model input and output can be visualised in its fast interactive viewer.
Important technological innovations will be developed in the new iMOD Suite, whereas iMOD 5 will be maintained the coming years, but will see no big new feature developments. Table 1 and Table 2 respectively provide comparisons between iMOD Suite and iMOD 5 for the components and supported MODFLOW6 packages.
| iMOD Suite | iMOD 5 | |
|---|---|---|
| computational kernels | MODFLOW 2005, MODFLOW 6, SEAWAT, MT3DMS | MODFLOW 2005, MODFLOW 6, SEAWAT, MT3DMS, MetaSWAP |
| file types | NetCDF, UGRID, shp, tiff, idf, ipf, gen | idf, ipf, isg, gen |
| grid types | structured & unstructured | structured & nested structured |
| scripted pre-processing | iMOD Python | iMOD Batch |
| interactive pre-processing | (QGIS) | iMOD GUI |
| scripted 2D plot | iMOD Python | iMOD Batch |
| interactive 2D plot | iMOD QGIS plugin (& QGIS) | iMOD GUI |
| scripted 3D plot | iMOD Python | |
| interactive 3D plot | iMOD 3D Viewer | iMOD GUI |
| Package | Description | iMOD Suite | iMOD 5 |
|---|---|---|---|
| DIS | Structured Discretization | x | x |
| DISV | Discretization by Vertices | x | |
| DISU | Structured Discretization | ||
| IC | Initial Conditions | x | x |
| OC | Output Control | x | x |
| NPF | Node Property Flow | x | x |
| HFB | Horizontal Flow Barrier | x | x |
| STO | Storage | x | x |
| CSUB | Skeletal Storage, Compaction, and Subsidence | ||
| BUY | Buoyancy | ||
| CHD | Constant-Head | x | x |
| WEL | Well | x | x |
| DRN | Drain | x | x |
| RIV | River | x | x |
| GHB | General-Head Boundary | x | x |
| RCH | Recharge | x | x |
| EVT | Evapotranspiration | x | x |
| MAW | Multi-Aquifer Well | ||
| SFR | Streamflow Routing | x | |
| LAK | Lake | ||
| UZF | Unsaturated Zone Flow | x | x |
| MVR | Water Mover |