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1 <br />baz. A secon channel is a chute channel that occurs on the shoreward side of abank-attached <br />~Y <br />alternate bar. Bank-attached bars occur along the margins of the channel although at some <br />' dischazges these bazs may be separated from the bank by secondary channel flows. Bank- <br />attached bars with laterally dissecting chute channels are referred to asbank-attached compound <br />' bars, even if the chute channels aze inactive at some dischazges. <br />Bars within a channel migrate downstream or aze stationary in location. Within the <br />Ouray NWR, the location of bars has been relatively constant over the last 30 years [Andrews <br />' and Nelson, 1989]. Ikeda [1989] described two types of stationary bars observed for rivers with <br />restricted meanders: fixed and forced. Ikeda used flume study results to explain the processes <br />that produce each baz type. Migrating alternate bars become fixed when the deflection angle of a <br />' meander exceeds a critical value of about 20° [Ikeda, 1989]. Forced bars form only in response <br />to the pattern of flow through a bend [Ikeda, 1989] and are commonly called point bars. Within <br />the Ouray NWR, both fixed bank-attached compound bars and forced point bars exist. <br />1 <br />1 <br /> <br /> <br />1 <br />1 <br /> <br />1 <br />1 <br /> <br /> <br />1 <br />' A-5 <br />