| OCR Text |
Show 3851 Gerdine- D 1872 you get a rapid, but as a rule when water has a gradient of, say, ten feet to the mile, you are getting a lot of rapids in that mile. Q Do the topographers take the elevations both above and below each rapid? A Yes. Q That is done with an instrument? A Yes. BY THE SPECIAL MASTER: Q Just for the purpose of the record, just to illustrate, take on this same sheet you refer to, from mile 204 to mile 206, what is the drop there? A From mile 204 to 208 it is the difference between 3765 and 3792; that would be about 27 feet in those two miles. Q How do you get that? A This is elevation( indicating): here ( indicating), this 3760, or 3765, is practically the surface of the stream; at mile 204 it continues to rise to 3770 at that point, 3775, 3780, 3785, 3790 at No. 205; then it goes up to 3795 about there, and 3797 at that point. Each one of those is five feet in fall. BY MR. BLACKMAR: Q At the various stages of the river a survey will show a different profile? |
