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Show 63 -- 60-- The recording instrument records the continuous height of the water, the same as the temperature- graph might record the temperature, through the 24 hours and throughout the year. R. 147- 148. " The depth of the water is obtained by an engineer from the local district, from the district office, by means of soundings at gauging stations. A gauging station is a fixed point on a river, picked for several reasons, generally on a certain stretch of the river where it can be reached by the engineer at any time of the year; it should generally be near a habitation, where the gauges can be watched, and certain structures, either a cableway or a bridge, have to be built, from which the flow measure-ments can be made. The measurements of depth are made by soundings, and the measurements of velocity are made with a current motor at the same time that the soundings are made - a very technical operation to determine the flow of a rivers. " R. 148. This is done under the constant supervision of the district engineer. " Q And is there a man on duty at this gauging stations? " A At all gauging stations there is a local resident that generally winds the clock of the recording gauge and sees that it is running and oiled, and he may possibly remove the record. Outside of that, his functions stop, except to see that the gauge is in operation. The measurements of flow are made by a competent engineer from the district office. " R. 148- 149. At the present time, the gauging stations that are |
