FEFLOW | Generation of a Power Time-Series File

Option #1 -  Generate a .pow file from an excel sheet
In Excel you can arrange your time-stepping and your parameter data (e.g. measured hydraulic heads) in two columns and save it as an ASCII formatted text file (.txt). The file should be organized in such ways, that x-values correspond to time-steps and y-values to the variable being stored. The first line starts with a hashtag plus the label of the time-series. This label will be displayed when selecting the time-series in FEFLOW. The second and third line start with an exclamation mark and are reserved for comments. Time-steps and data start in line 4. Please note that time-steps need to be given in numeric format and NOT in some sort of date format (e.g. 2024-03-01). You can combine several time-series by appending them to each other divided by an 'END' tag (see example below). 

# ID1
! Comment line for time series 1
! ...
x₁ y₁
x₂ y₂
...
x_m y_m
END

# ID2
! Comment line for time series 2
! ...
x₁ y₁
x₂ y₂
...
x_n y_n
END

# IDx
! Comment line for time series x
! ...
x₁ y₁
x₂ y₂
 ...
 x_o y_o
END
END

The last time-series is closed with a double 'END' tag. Once the columns are completed, one may save the file and change the extension from .txt to .pow .

Option #02 - Copy and edit existing power files
Alternatively, one can copy an existing time-series from the Time Series Editor in FEFLOW. Choose a time-series and export it to a destination within your FEFLOW model data folder. Rename the file, edit the time-series and re-import it into FEFLOW.