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<br />UUlblE <br /> <br />CONTENTS <br /> <br />Abstract. . <br /> <br />. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . <br /> <br />Page <br />1 <br /> <br />Introduction <br /> <br />3 <br /> <br />Acknowledgments <br /> <br />5 <br /> <br />Base-flow data available. 6 <br />Selection of base period. 6 <br /> <br />Areal distribution of base flow in Kansas. 9 <br />Map of mean base flow . . . . . . . . . 9 <br />Relation of base flow with total streamflow. 11 <br />Relation of base flow with ground-water availability. 13 <br />Relation of base flow with direct runoff. . . . . 13 <br />Distribution of base flow in summer and winter 16 <br /> <br />Probability distribution of base flow . . . . . . . . . . . . . . .. 20 <br />Monthly base-flow duration curves at streamflow stations. . .. 22 <br />Chance exceedance of monthly base flow at streamflow stations. 25 <br />Approximate probability at short-term stations . . . . . . . .. 110 <br /> <br />Development of formulas of base-flow relations 113 <br />Rejected basin characteristics . . . . . 113 <br />Basin characteristics found significant. 115 <br />Formula of mean annual base flow. 117 <br />Formula of mean summer base flow. . 117 <br />Formula of mean winter base flow . . . 118 <br />Formulas of chance exceedance of monthly base flow 119 <br />Residual analysis. . . . . . . . . . . . . . . . . 119 <br /> <br />Errors. . . . . . . . . . . . . . . . . . . . . . . 121 <br />Limitations of the state-wide base-flow formulas 121 <br /> <br />Procedure for computing base flow at any site. . . 124 <br />Preliminary base-flow relations at ungaged sites 124 <br />Determination of basin characteristics. . . . . 124 <br />Base flow by formulas using basin characteristics 130 <br />Base-flow relations at partial-record sites . . . . . 132 <br />Comparison of partial-record and formula methods of comput- <br />ing monthly base flow. . . . . . . . . . . . . . . . . . . . . . 135 <br /> <br />Application of base flow relations. <br /> <br />137 <br /> <br />References cited. . . . . . . . . . <br /> <br />139 <br /> <br />iii <br />