Excerpt from Hydrographic Manual of the United States Geological Survey
Kinds of stations and items of equipment - Current-meter gaging stations may be divided, according to equipment, into bridge, cable, and boat stations. The equipment of a station consists of a bridge, 01 a cable and car, or a boat, as the case may be, from which measure ments are made; a tag line and tags or marks on the bridge indicating the points at which the meter is lowered and soundings taken; a gage12 hydrographic manual, U. S. Geological survey. [no.94.
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