Depth and Water Level source codes (siwlsc.edi)

Source of water level measurement.

---------------------------------
Code  Description
---------------------------------
A     Other Gov't      Reported by another government agency (do not use "A" if reported by owner, use "O").
D     Driller's Log    From driller's log or report.
G     Geologist        Private geologist-consultant or university associate.
L     Geophysical Log  Depth interpreted from geophysical logs by personnel of source agency.
M     Memory           Memory (owner, operator, driller).
O     Owner            Reported by owner of well.
R     Other Reported   Reported by person other than the owner, driller, or another government agency.
S     Reporting Agency Measured by personnel of reporting agency.
U     *Unknown         Source is unknown.
Z     Other            Other source (explain in remarks).