The datum elevation of this station has been determined to be 647.49 ft above NAVD 1988. To obtain gage-height values in NAVD 1988, add 647.49 ft.
Add up to 2 more sites and replot for "Discharge, cubic feet per second, [Primary Sensor]"
Add up to 2 more sites and replot for "Gage height, feet, [Primary Sensor]"
Add up to 2 more sites and replot for "Gage height, feet, [Secondary Sensor]"