. Water Supply and Irrigation Papers of the United States Geological Survey . A. CURRENT-METER RATING STATION AT LOS ANGELES, B. BRIDGE STATION AND CROSS SECTION OF and depth method. INTRODUCTION. 17 Depths for the determination of the area are usually obtained bysounding with the current meter and cable. In rough sections orswift current an ordinary weight and cable are used, particular carebeing taken that all observations shall be in the plane of the crosssection. Two methods of determining the velocity of flow of a stream arein general use—the float method
. Water Supply and Irrigation Papers of the United States Geological Survey . A. CURRENT-METER RATING STATION AT LOS ANGELES, B. BRIDGE STATION AND CROSS SECTION OF and depth method. INTRODUCTION. 17 Depths for the determination of the area are usually obtained bysounding with the current meter and cable. In rough sections orswift current an ordinary weight and cable are used, particular carebeing taken that all observations shall be in the plane of the crosssection. Two methods of determining the velocity of flow of a stream arein general use—the float method and the current-meter method. The float method with its various modifications of surface, sub-surface, and tube or rod floats is now considered obsolete in the ordi-nary practice of the United States Geological Survey. The use ofthis method is limited to special conditions where it is impracticableto use the current meter, such as in places where large quantities ofice or debris which may damage the meter are flowing with the cur-rent, and for miscellaneous measurements or other work where ahigh degree of accuracy is not n
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