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<br />UU~'iJ0 <br /> <br />3 <br /> <br />excludes storm runoff, and with the increasing headwater development, low- <br />flow problems must be answered by an analysis of base flow instead of low <br />flow. It is recognized that headwater uses may not extract all of the storm <br />runoff or may extract some of the base flow, but the analysis must still <br />start with a study of base flow. <br /> <br />The order of presentation in this report, 6A, is: (1) a description of <br />the components of flow to show the relation of base flow to total flow; (2) a <br />description of the techniques of separating base flow from total flow; (3) a <br />list of the monthly values of base flow for the period of streamflow record; <br />and (4) a tabulation of the likely range of monthly values of base flow ex- <br />pected for the years outside the period of record to complete the base flow <br />information for a long-term period (noted as base period in this report). <br />This long-term period, generally 1923-62, was needed for analysis of re- <br />gional variations and future expectancy. Data of monthly and annual total <br />flow are included for application in both total-flow studies and in direct- <br />runoff studies. <br /> <br />ACKNOWLEDGMENTS <br /> <br />This report has been prepared as part of a cooperative program bet- <br />ween the Kansas Water Resources Board and the U.S. Geological Survey. <br />It was prepared in the Survey district office in Topeka under the adminis- <br />trative direction of Edward J. Kennedy, District Engineer, and under the <br />immediate direction of L. W. Furness, Chief, Hydrologic Studies Section. <br />Clarence V. Burns was in charge of the computations for the extension of <br />the records. <br /> <br />Dwight F. Metzler, Executive Secretary of the Kansas Water Resources <br />Board, guided the content of this report toward the goal of providing infor- <br />mation useful to the development of the water resources of Kansas. <br /> <br />Acknowledgment is made of the helpful advice and criticism of the <br />Washington staff of the U.S. Geological Survey, particularly Solomon M. <br />Lang, whose consultation helped develop the methods for separation of base <br />flow. <br /> <br />The streamflow records used for this report were collected by the <br />U.S. Geological Survey through cooperative programs with the State of Kan- <br />sas, the Corps of Engineers of the U.S. Department of the Army, and the <br />Bureau of Reclamation of the U.S. Department of the Interior. <br />