modpath

The modpath module uses the cell by cell flow values generated from a MODFLOW project along with head values and other MODFLOW parameters to trace the path of a particle of water as it moves through the ground. The paths are calculated using the same algorithms used by U.S. Geological Survey MODPATH and the results should be similar.

The modpath module at this point does not handle transient simulations the same way that the U.S.G.S. MODPATH does. It treats each time step as a steady state model, and uses the parameters from the .dwr/.dwz file based on the starting time.

A valid modpath field file (.eff/.efz) should contain the following as cell data components: Head; CCF; ELEV_TOP; ELEV_BOT; and POROSITY. The Head component should contain the head value for each cell, the ELEV_TOP and ELEV_BOT should components should contain the elevation of the top of the cell, and the elevation of the bottom of the cell respectively, and the POROSITY should contain the flow due to porosity for that each cell. All other MODFLOW parameters (drains, wells, recharge, etc..) should be written into a .dwr/.dwz file.

Module Input Ports

• Z Scale [Number] Accepts Z Scale (vertical exaggeration) from other modules
• Input Field [Field] Accepts a data field.
• Input Starting Locations [Field] Accepts the starting points for each line
• Start Date [Number] The starting time
• Ending Date [Number] The ending time

Module Output Ports

• Z Scale [Number] Outputs Z Scale (vertical exaggeration) to other modules
• Output Field [Field] Outputs the streamlines
• Start Date [Number] The starting time
• Ending Date [Number] The ending time
• Output Object [Renderable]: Outputs to the viewer.