OCR Text |
Show prima iuly for the purpose of determining stream flow , what the ( depths deptlis ) and velocities ( -Nvere Nvere ) at the ( gaging raging ) stations , as shown by the measurements . Given the gage alone ( he lie ) is not able to compute the depths ; you would have to have a study of the , gage heights ( and tmd ) discharge measurements , from which the actual depths and ( cross-sections crosssections ) ( were" were ) . , obtained . He is able to determine depths and velocities , ( with -with with ) reference to certain gage heights which are . shown on these plates if given the gage heights and discharge measurements . The width of the stream enters into the ( compu- compu ) tation of discharge . All of the plates now being discussed , 1 , 2 , 3 , 4 , , and 5 , show for the gage stations the approximate relation between stage and depth and stage ( and aud ) velocity . Using Plate 5 , with reference to the gaging station at Lees ( Perry Ferry ) , the question is as regards relation between a gage height and mean depth ? The curve to the right of Plate 6 shows the approximate relation between ( stage stc-Ige stcIge ) of ( water Nvater ) at Lees ( Perry Ferry ) and depth . It shows that at a stage . of 7 feet , the mean depth of the water is 4M2 feet . At a gage height of 12 feet , the mean depth is 141 ii feet . It shows that at a gage height of 19 feet , , the mean depth is approximately 26Y feet . ( It- It ) will be noticed that was a very wide discrepancy in the ( plot- plot ) tings , due to the scour and fill of the river . . The |