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Grain Size (continued) <br />• In the Cozad reach, grain size has increased <br />in response to the loss of finer North Platte <br />sediment supply and the greater influence of <br />coarser South Platte sediment supply. <br />12 <br />PLATTE RIVER BED AT GOTHENBURG/COZAD: 1980 AND 1931 <br />100 <br />90 <br />80 <br />70 <br />W <br />60 <br />';0 <br />K <br />LL <br />50 <br />LU <br />40 <br />p <br />0: <br />UJI <br />a. <br />30 <br />20 <br />10 <br />0 <br />0.01 0.10 1.00 10.00 100.00 <br />GRAIN SIZE DIAMETER (mm) <br />'—*—Cozad 1980 —A Gothenburg 1931 <br />12 <br />