GMS:SEAWAT
| SEAWAT | |
|---|---|
| Model Info | |
| Model type | 3D Flow and Transport Model |
| Developer | USGS |
| Documentation | SEAWAT Manual |
| Tutorials | SEAWAT Tutorials |
SEAWAT is a three dimensional variable density groundwater flow and transport model developed by the USGS based on MODFLOW and MT3DMS. SEAWAT v4 is based on MODFLOW 2000 and MT3DMS 5.2. SEAWAT includes two additional packages: Variable-Density Flow (VDF) and Viscosity (VSC). A complete description of SEAWAT is beyond the scope of this reference manual. It is assumed that the reader has a basic knowledge of SEAWAT and has read the SEAWAT documentation.
GMS supports SEAWAT as a pre- and post-processor. The interface to SEAWAT relies on the interface to MODFLOW and MT3DMS. The input data for SEAWAT is generated by GMS and saved to a set of files including a MODFLOW model, an MT3D model if transport is used, and a SEAWAT model pointing to the MODFLOW and MT3D model's package files. These files are then read by SEAWAT and executed, and real/actual head values are output by SEAWAT v4 (whereas SEAWAT v2 outputs equivalent freshwater heads). SEAWAT uses the MODFLOW and MT3D interfaces for boundary condition display and for post-processing which explains why many of the output files are saved as MODFLOW or MT3DMS files as shown in the Output Files table below.
The SEAWAT model can be added to a paid edition of GMS.
SEAWAT Files
Below are tables of some of the available input and output files for SEAWAT.
- For more information on these files see their respective MODFLOW, MT3DMS, and SEAWAT manuals
| Name | Description |
|---|---|
| SWN | SEAWAT Name Control File |
| VDF | SEAWAT Variable-Density Flow Process Input File |
| VSC | SEAWAT Viscosity Package Input File |
| GLO | MODFLOW Global Listing File |
| OUT | MODFLOW Output File |
| HED | MODFLOW HDF5 Head File |
| CCF | MODFLOW Cell-to-Cell Flow File |
| LMT | MODFLOW Link-MT3DMS Package |
| OBS | MODFLOW Main Observation Process input file |
| CHOB | MODFLOW Constant-Head Flow Observation Input File |
| ASP | MODFLOW Advanced Spacial Parameterization File |
| DIS | MODFLOW Discretization File |
| BA6 | MODFLOW Basic Package |
| LPF | MODFLOW Layer Property Flow Package |
| OC | MODFLOW Process Output Control Option |
| RCH | MODFLOW Recharge Package |
| WEL | MODFLOW Process Well Package |
| CHD | MODFLOW Time-Variant Specified-Head Package |
| PCG | MODFLOW Preconditioned Conjugate-Gradient Package |
| BTN | MT3DMS Basic Transport Package |
| ADV | MT3DMS Advection Package |
| SSM | MT3DMS Sink/Source Mixing Package |
| GCG | MT3DMS Generalized Conjugate-Gradient Solver Package |
| Name | Description |
|---|---|
| CBB | SEAWAT Binary Cell-By-Cell Flow File |
| HDS | SEAWAT Head File |
| LIST | SEAWAT List File |
| GLO | SEAWAT Global Listing File |
| _W | MODFLOW Weighted Residuals Data Exchange File |
| _WW | MODFLOW Weighted Equivalents & Weighted Observation |
| _WS | MODFLOW Weighted Residuals and Simulated Equivalents |
| _R | MODFLOW Unweighted Residuals Data Exchange File |
| _OS | MODFLOW Observed Values and Simulated Equivalents File |
| _B | MODFLOW Data Exchange File |
| _NM | MODFLOW Weighted Residuals and Probability Plotting file |
| OUT | MODFLOW Output File |
| CCF | MODFLOW Cell-to-Cell Flow File |
| GLO | MODFLOW Global Listing File |
| HED | MODFLOW HDF5 Head File |
| UCN | MT3DMS Unformatted Concentration File |
| CNF | MT3DMS Spatial Configuration File |
| P00 | Unsuccessful Termination Error File |
Importing a SEAWAT Simulation
An existing SEAWAT v4 model can be imported into GMS by opening the name file which must have a ".nam" extension. Upon opening the name file, GMS uses the name file to determine if the simulation is MODFLOW-2000, MODFLOW-2005, or a SEAWAT simulation based on the packages included.
Once the import is complete, if the model includes transport packages or the VDF or VSC packages then a SEAWAT model is automatically created inside GMS.
If the model only includes MODFLOW packages, then the SEAWAT model needs to be created by enabling the SEAWAT model interface by selecting SEAWAT in the Model Interfaces dialog available under the Edit menu, and then selecting New Simulation under the SEAWAT menu.
SEAWAT Links
SEAWAT External Links
| GMS – Groundwater Modeling System | ||
|---|---|---|
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| Models: | FEFLOW • FEMWATER • HydroGeoSphere • MODAEM • MODFLOW • MODPATH • mod-PATH3DU • MT3DMS • MT3D-USGS • PEST • PHT3D • RT3D • SEAM3D • SEAWAT • SEEP2D • T-PROGS • ZONEBUDGET | |
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