The measurement of the gage height of zero flow for a streamflow control section. The date and time the gage height of zero flow was inspected. The gage height of zero flow, which is the depth of water over the point of zero flow subtracted from the current gage height. The default units are feet. Code indicating whether gage height was supplied or calculated. The accuracy of the measurement of the gage height of zero flow as assigned by the field person. The default units are in feet. The method of determining the accuracy of the measurement of the gage height of zero flow. The depth of the water over the point of zero flow (PZF) as measured in the field. The default units are feet. The stream stage when the gage height of zero flow determination was made. The default units are feet. Comments about the measurement of the point of zero flow.