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Show ( ifcitios tiffies ) . . ( R . . 1296 . ) And 367 it is also true that the ( western 'western western ) rivers are ( all aU ) generally subject to ( precipita precipita- precipita ) ¬ , tion from ( melting melthig ) snow and to heavy rains in the late summer . ( R . 1296 . ) So that , so far as those ( 'two two -two two ) elements are concerned , there is not anything that differentiates this ( river-leaving riverleaving ) out the ( ques- ques ) ( tion -tion tion ) of ( degree-from degreefrom ) other rivers in the west . The general tendency of a river carrying large ( amounts aniounts ) of sand over long periods of time , for a period of , say , thirty to fifty years , should be to fill up , speaking in human periods of ( time-should timeshould ) equalize , fill up at times and scour out at times , and should in ( human humail ) measurements of time be about the same . The Missouri River below Kansas City , during freshets , builds bars and cuts banks and changes quite considerably . ( R . 1297-1298 . ) During the ( cut-out cutout ) stage the Missouri River frequently stops ( after -after after ) it has excavated a channel not more than ( ihree -three three ) feet in depth . If it was never dredged , then in low water around three feet would be the ( maxi maxi- maxi ) ( mum -inuin inuin ) depth over some of those bars between ( Kan- Kan ) sas City and the mouth . ( R . 1297-1298 . ) He is not familiar with the Snake River . ( R . 1301 . ) The gradient of the Colorado River in that ( see- see ) ( tion tioll ) from Moab to ( the 'the the ) junction of the Green and ( Colorado -Colorado Colorado ) Rivers is around one foot per mile . ( R . ( 1301 1-301 ) . ) The swift currents of course make the faster , , changes . The ( swift sNvift ) current builds a shoaler river . The Colorado River can spread out between |