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File: Elk River.rpt, Page: 1 <br /> Bulletin 17B Frequency Analysis <br /> 16 Feb 2015 02:12 PM <br /> --- Input Data--- <br /> Analysis Name: Elk River <br /> Description: Elk River near Big Lake <br /> Data Set Name: Peak Flows <br /> DSS File Name: K:\Water Resource Eng\Elk River MN\2015 DFA Map\hydrology\SSP\Elk_River_MN\Elk_River_MN.dss <br /> DSS Pathname: ////01jan1900/IR-CENTURY// <br /> Report File Name: K:\Water Resource Eng\Elk River MN\2015 DFA Map\hydrology\SSP\Elk_River_MNBulletin 17bResults\Elk_River\EI <br /> XML File Name: K:\Water Resource Eng\Elk River MN\2015 DFA Map\hydrology\SSP\Elk_River_MN\Bulletinl7bResults\Elk River\Elk_ <br /> Start Date: <br /> End Date: <br /> Skew Option: Use Station Skew <br /> Regional Skew: -Infinity <br /> Regional Skew MSE: -Infinity <br /> Plotting Position Type: Median <br /> Upper Confidence Level: 0.05 <br /> Lower Confidence Level: 0.95 <br /> Display ordinate values using 3 digits in fraction part of value <br /> --- End of Input Data--- <br /> --- Preliminary Results--- <br /> << Skew Weighting >> <br /> Based on 80 events, mean-square error of station skew= 0.118 <br /> Mean-square error of regional skew= -? <br /> << Frequency Curve >> <br /> Peak Flows <br /> Computed Expected I Percent I Confidence Limits 1 <br /> Curve Probability I Chance I 0.05 0.95 I <br /> FLOW, CFS I Exceedance I FLOW, CFS 1 <br /> I I I <br /> 6,595.811 --- 0.2 I 8,551.405 5,348.2371 <br /> 6,073.479 --- 0.5 I 7,793.607 4,961.3481 <br /> 5,624.399 --- 1.0 I 7,149.781 4,625.518 1 <br /> 5,121.979 --- 2.0 I 6,438.585 4,245.901 1 <br /> 4,362.524 --- 5.0 1 5,383.728 3,663.0981 <br /> 3,701.748 --- 10.0 1 4,488.440 3,145.495 1 <br /> 2,946.881 --- 20.0 1 3,496.231 2,538.894 1 <br /> 1,730.076 --- 50.0 1 1,987.254 1,511.254 1 <br /> 885.428 --- I 80.0 I 1,024.853 749.839 1 <br /> 588.476 --- I 90.0 I 698.747 478.937 1 <br /> 406.922 --- 1 95.0 I 498.073 317.167 1 <br /> 188.133 --- 1 99.0 I 248.114 132.484 1 <br /> I I I <br /> << Systematic Statistics>> <br /> Peak Flows <br /> Log Transform: I I <br /> FLOW, CFS 1 Number of Events 1 <br /> I 1 <br /> Mean 3.196 1 Historic Events 0 1 <br /> Standard Dev 0.319 1 High Outliers 0 1 <br /> Station Skew -0.796 1 Low Outliers 0 1 <br /> Regional Skew --- 1 Zero Events 0 1 <br /> Weighted Skew --- 1 Missing Events 0 I <br /> Adopted Skew -0.796 1 Systematic Events 80 1 <br /> I <br /> 208 <br />