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I 1'111. OQ I All suitable measurements were plotted for stations having a short record. For stations having a long record, measurements up to bankful stage were chosen at random from a1 1 available data for plotting. Heasurements affected by ice, measurements with backwater or other temporary conditions affecting the geometric characteristics of the channel, and measurements with discharge less than Q. I cfs (cubic feet per second) were not used. I I There was considerable scattering of the data throughout the range of the relation 1 ines. The scatter of data for'" low discharge may be attributed to different cross sections selected for measurements, pools, and riffles, or shifting in the streambed. The data for high discharge tend to be less erratic because the measurements are usually made from a bridge, which may be at a constriction and generally spans a nontypical cross section. I I I Examples of the relations are shown for Pottawatomie Creek near Garnett, Kansas, a stream having a gravel and rock bottom with cohesive banks (Figure 2) and for the Smoky Hill River at Elkader, Kansas, a stream having a sand channel with sand banks (Figure 3). The width increases much less rapidly with increasing discharge in Pottawatomie Creek (b:: 0.38) than in the Smoky Hill River at Elkader (b:: 0.60). However, velocity increases more rapidly in Pottawatomie Creek (m:: 0.28) than in the Srroky Hi 11 River at Elkader (m == 0.12). Photographs of a typical cross sect ion for each site are shown on figures 4 and 5. I I I I I I I I I I Figure 4. Photograph of Pottawatomie Creek near Garnett, Kansas. which has a confined channel within stable banks and a streambed of gravel and small rock. I 5 I