Quality Control - Water Level Data (Staff Gauge and Sensor Depth)
Staff Gauge Height and Sensor Station Water Depth: readings should be taken at about the same time (+/- 5 minutes).
QC Sensor Station Water Depth: Use metric ruler to measure from pressure transducer (white disc in CTD sensor) to water surface. Note that this depth measure may be slightly different from the sensor-measured depth but should be consistent over time.