Water Level method codes (siwlmt.edi)
Code indicating how the water level was measured.
--------------------------------- Code Description --------------------------------- A Airline Airline measurement. B Analog Analog or graphic recorder. C Calib. airline Calibrated airline measurement. E Estimated Estimated. F Transducer Transducer. G Pressure-gage Pressure-gage measurement. H Calib.Pres.Gage Calibrated pressure-gage measurement. L Geophysical log Interpreted from geophysical logs. M Manometer Manometer measurement. N Nonrec. gage Nonrecording gage. O Observed Observed. P Acoustic Pulse Acoustic Pulse measurement R Reported Reported, method not known. S Steel tape Steel-tape measurement. T Electric tape Electric-tape measurement. V Calib.Elec.Tape Calibrated electric-tape measurement. W Calib.Elec.Cable Calibrated electric cable. X Uncal.Elec.Cable Uncalibrated electric cable. Z Other Other.