Flow_cd dictionary

[CaelumMroczek]

After running a readNWISdv (or other readNWIS) the output dataframe includes a column that describes the values asked for (which can be renamed as Flow_cd using renameNWISColumns). For example, asking for daily mean discharge ("X_00060_00003") includes another column named "X_00060_00003_cd" with values such as "A", "A e", "P", or "P Eqp". I cannot find anything that explains what these flow codes mean. Does this exist or can it be made available?

[ldecicco-USGS]

Those specific codes can be found here:
https://help.waterdata.usgs.gov/codes-and-parameters/instantaneous-value-qualification-code-uv_rmk_cd

So if you see "A e" it's both:
Approved for publication -- Processing and review completed.
and
The value has been edited or estimated by USGS personnel.

Other codes are found here:
https://help.waterdata.usgs.gov/codes-and-parameters

If you've got more questions, I'd recommend using this repository's Issues:
https://github.com/DOI-USGS/dataRetrieval/issues
We are transitioning to that organization, this one won't be around much longer.