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<br />between 11 and 17 m3/s are extremely common and were equaled or exceeded 30% of all <br /> <br />. <br /> <br />days during the 77 years of record (Fig. 19). These low, frequent discharges create the <br /> <br />first prominent peak in the sediment transport curve and carried 8% of the total sediment <br /> <br />transport. <br /> <br />A second peak in the sediment transport curve occurs at about 60 m3 Is. At this <br /> <br />discharge, 6.9 x 106 kglday of sediment are transported past the Watson gage. This peak <br /> <br />is less pronounced than the first peak, and sediment transport is high across a broad range <br /> <br />of discharges somewhat more and less than 60 m3/s, between 48 and 82 m3/s (1700 and <br /> <br />. 2900 ft3/S). Discharges in this range carried 45% of the total sediment load during the <br /> <br />period of record. <br /> <br />Analysis of Sediment Records-Evidence of Supply Limitation <br /> <br />Analysis of the sediment transport records, for 1988 and 1990 show that sediment <br /> <br />transport is higher on the rising limb of each annual flood than on the receding limb (Fig. <br /> <br />20). For example, the spring runoff of 1988 peaked in late April, receded, then peaked <br /> <br />again in mid-June. The initial peak in April carried more than 4 times the sediment as <br /> <br />the peak of similar magnitude in June. Thus, the White River at the Watson gage is a <br /> <br />supply-limited stream that could transport more sediment than it does, but these <br /> <br />additional supplies are not available. <br /> <br />Analysis of Discharge Measurement Records <br /> <br />The analysis of discharge measurement records (Fig. 21) at the Watson gage <br /> <br />shows that discharges on the White River follow an annual cycle of flooding and <br /> <br />23 <br />