Modflow

MODFLOW

While GWD is flexible and has been used to visualize different models, development has been focused on the MODFLOW, MT3D, mod-PATH3DU and MODPATH, including the latest unstructured grid capabilities within MODFLOW-USG and MODFLOW6. GWD supports any type of the unstructured grids including but not limited to the quadtree, triangular or voronoi grid refinement. GWD provides user-friendly visualization tools to explore, understand and visualize the groundwater models, view the model numerical grid, input data such as properties and boundary conditions, and output data including heads, concentrations, fluxes and pathlines.

Models can be examined using the cross-sectional, cut-away, fence and layer "exploded" views. Easy to use widgets allows you to slice or cut anywhere through the model grid.

Explore Model properties, boundary packages and output grids using the cell inspector Annotation tool. Time series data such as pumping rates, observations can be presented using the Chart annotation.

Visualize the MT3D outputs as 3D grids, volumes or 3D contours, or create the subset using the cross-sectional, cut-away, fence views.

Visualize the modPATH3DU or Modpath pathlines to display the travel time or the capture ID.

GWD includes support for visualizing the vertical CLNs used to represent the pumping wells and also horizontal CLNs used to simulate the groundwater interaction with streams and/or lakes as described in the article by Muffels et all.

Groundwater Desktop provides a streamlined, custom interface for the USGS ZONEBUDGET utility. This integration offers an intuitive workflow for defining model zones and parameters, as well as a robust graphical user interface (GUI) to execute ZONEBUDGET executable and visualize sub-regional water budgets.

After executing the Zone Budget GWD will read CSV2 output and fill out pivot table to display volumetric budget in tabular form.This pivot table displays the volumetric budget in a structured, tabular form with the following characteristics:

Row-Based Data: Each row in the underlying CSV2 file represents a unique combination of one zone and one time step.
Columnar Terms: Every separate inflow and outflow budget term (e.g., Recharge, Wells, River, etc.) is assigned its own column for clear comparison.
Zone Summary: The table provides a concise summary of the flow budget for each subregion, similar to the outputs seen in the Zones tab of tools like GMS.
Dynamic Filtering: Users can typically sort or filter the table by time or zone to observe how specific terms change throughout the simulation period

The Zone Budget Charts window in GWD allows you to visualize the processed CSV2 data using two primary chart formats:

Histogram and Bar Chart: This chart is used to compare the magnitude of different budget components (e.g., Recharge, Wells, River Leakage) for a specific time step or zone. It provides a visual snapshot of the inflows versus outflows.
Time Series: This chart displays how specific budget terms or the total water balance change over the duration of the simulation. It is essential for transient models to identify trends, seasonal fluctuations, or the timing of peak stresses. Press and hold Shift key to add or remove individual budget items to the time series plot.

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