The reference point from which a water level is measured. The starting date and time that this measurement point is valid. The ending date and time that this measurement point is valid. The code, used for crest-stage gages, indicating if the pin or cap is the measurement point. The minimum stage that can be read from this sensor at the measurement point. The default units are feet. The maximum stage that can be read from this sensor at the measurement point. The default units are feet. The elevation of the measurement point. The default units are feet.