FloPy

Produce a reproducible groundwater model and a checked water budget. FloPy writes and reads MODFLOW files; solving also requires a compatible MODFLOW executable.

Inputs and choices

• Establish horizontal CRS, vertical datum, length/time units, layer tops/bottoms, active cells, hydraulic properties, stresses and observation uncertainties.
• Head is an elevation relative to a datum. Depth below a well collar must first be converted with the collar elevation; a LAS depth curve is not a head series.
• Choose steady or transient conditions from the question and stress history. Distinguish hydraulic conductivity (length/time), transmissivity (length²/time), recharge (length/time) and pumping (length³/time; extraction is negative).
• Keep MODFLOW 6 packages separate from older MODFLOW model/package APIs. Use an isolated project environment and record the executable version and origin.

Workflow