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Show Record does not necessarily produce a two foot depth of water on riffles and sand bars or at any other place. if the same hydraulic con-ditions are present, the same section and the same slope as at the gauge, there would probably be a two foot rice at such other place when such rise occurred at the gauge. If the width of the river is increased or its slope changed, the height to 242 - 243which the water will go is change. The amount of silt or sediment carried in a river depends largely upon its velocity. At a riffle the velocity is high enough to carry the finer particles of sediment, which, when the water reaches quieter stretches, are deposited until, during flood periods, the velocities increase sufficiently to take up the sediment and carry it to some other place. The Colorado River, as I have read from official reports, carries silt running all the way from very fine sediment up to gravel like that carried in the San Juan. The variation in this sediment depends on whether the floods are due to melting snow form the higher portions of the river or floods from the lower stretches due to rain. 243 - 246 Exhibit No. 81, entitled " The Colorado River", by Lewis R. Freeman, was received in evidence conditionally, the special Master stating with reference to books of this character: " I think we had better admit them temporarily, if we want to refer to them, and consider them for whatever purpose they may be admissible, 246 - 248if at all." Exhibit No. 82, entitle " Characteristics of the Colorado, Green and San Juan Rivers, as Shown by Current Meter Measurements", by the witness Hoyt, being a compilation of data obtained at gauging stations and the conclusions reached by the 248 - 249witness on that information, was received in evidence. In connection with Exhibit No. 82 there was offered in evidence Exhibit No. 82- A, being Plates 1- A to 6- A and Nos. 1 to 13, and being merely a computation. Exhibit No. 83, being profile tables of the Colorado, Green and San Juan Rives prepared by the witness; - 34 - |