Packages
| Name | Long name | Version introduced |
|---|---|---|
| Required packages | ||
| BAS | Basic | original |
| OC | Output Control | original |
| Groundwater flow packages | ||
| BCF | Block-Centered Flow | original |
| LPF | Layer-Property Flow | MODFLOW-2000 (1.0) |
| HUF | Hydrogeologic Unit Flow | MODFLOW-2000 (1.1) |
| HFB | Horizontal Flow Barrier | MODFLOW-88 |
| UZF | Unsaturated-Zone Flow | MODFLOW-2005 (1.2) |
| Solvers | ||
| DE4 | Direct Solver | MODFLOW-88 (2.5) |
| GMG | Geometric Multigrid Solver | MODFLOW-2000 (1.15.00) |
| LMG | Link-AMG | MODFLOW-2000 (1.4) |
| PCG | Preconditioned Conjugate-Gradient | MODFLOW-88 |
| SIP | Strongly Implicit Procedure | original |
| SOR | Slice Successive Over-Relaxation | original |
| Head-dependent flux boundary packages | ||
| DAF | DAFLOW | MODFLOW-2000 (1.11) |
| DRN | Drain | original |
| DRT | Drain Return | MODFLOW-2000 (1.1) |
| ETS | Evapotranspiration Segments | MODFLOW-2000 (1.1) |
| EVT | Evapotranspiration | original |
| GHB | General-Head Boundary | original |
| LAK | Lake | MODFLOW-2000 (1.1) |
| MNW | Multi-Node, Drawdown-Limited Well | MODFLOW-2000 (1.11) |
| RES | Reservoir | MODFLOW-88 (2.6) |
| RIV | River | original |
| SFR | Streamflow-Routing | MODFLOW-2000 (1.14.00) |
| STR | Stream | MODFLOW-88 |
| Other stress packages | ||
| WEL | Well | original |
| CHD | Constant-Head Boundary | MODFLOW-88 |
| FHB | Flow and Head Boundary | MODFLOW-96 (3.2) |
| RCH | Recharge | original |
| Miscellaneous packages | ||
| DIS | Discretization | MODFLOW-2000 (1.0) |
| GAG | Gage | MODFLOW-2000 |
| HYD | HYDMOD | MODFLOW-2000 (1.1) |
| IBS | Interbed-Storage | MODFLOW-88 |
| KDEP | Hydraulic-Conductivity Depth-Dependence Capability | MODFLOW-2000 (1.12) |
| LMT | Link-MT3DMS | MODFLOW-2000 (1.5) |
| LVDA | Model-Layer Variable-Direction Horizontal Anisotropy Capability | MODFLOW-2000 (1.12) |
| SUB | Subsidence and Aquifer-System Compaction | MODFLOW-2000 (1.12) |
| SWT | Subsidence and Aquifer-System Compaction Package for Water-Table Aquifers | MODFLOW-2000 (1.18) |
| UTL | Utility | original |
| Observation process input files | ||
| OBS | Input File For All Observations | MODFLOW-2000 |
| HOB | Head-Observation | MODFLOW-2000 |
| DROB | Drain Observation | MODFLOW-2000 |
| DTOB | Drain Return Observation | MODFLOW-2000 |
| RVOB | River Observation | MODFLOW-2000 |
| GBOB | General-Head-Boundary Observation | MODFLOW-2000 |
| CHOB | Constant-Head Flow Observation | MODFLOW-2000 |
| ADV | Advective-Transport Observation | MODFLOW-2000 (1.0) |
| STOB | Stream Observation | MODFLOW-2000 |
| Obsolete packages | ||
| GFD | General Finite-Difference | MODFLOW-88 to 96 |
| TLK | Transient Leakage | MODFLOW-88 to 96 |
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