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<br />C-J4 <br /> <br /> <br />lambda = <br /> <br />x - 2S/G <br />2/GS <br />4/G2 <br /> <br />m <br /> <br />alpha <br /> <br />and <br /> <br />a <br /> <br />alpha - 0.92 <br /> <br />If the skew coefficient is zero (log normal distribution), the transformation vari- <br />ables should not be computed. <br /> <br />c. Transform log-Pearson Type III Parameters <br /> <br />Where skew coefficients are not zero, the log-Pearson Type III parameters should <br />be transformed using the variables above according to the following equations: <br /> <br />Z <br /> <br />Si <br /> <br />m + lambda/a <br />2/lambda 1/2 <br /> <br />Where the skew coefficient is zero (log normal distribution), compute the parame- <br />ters as follows: <br /> <br />Z <br /> <br />X + 0.92S2 <br /> <br />= <br /> <br />S <br /> <br />Sz <br />GZ <br /> <br />= <br /> <br />G <br /> <br />d. Compute Transformation Constant <br /> <br />c <br /> <br />(alpha/a)lambda e 0.92m <br /> <br />Where the skew coefficient is zero (log normal distribution), the transformation <br />constant should be computed as follows: <br /> <br />C <br /> <br />= <br /> <br />eO.92X +0.42S.S <br /> <br />e. Determine Discharges for Depth and Velocity Zones <br /> <br />The alluvial fan flooding can be determined by a combination of two methods. <br />They are based on a single channel region and a multiple channel region in the analyses. <br />The single channel region is defined by the length of the single channel measured from <br />the mouth of the canyon to the point where the flood channel splits. If there is no clear <br />indication as to the length of the single channel from data collected during the reconnai- <br />sance phase, the length of the single channel can be determined using Figure B-1. Below <br />