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<br />ABOUT THE GUIDE: RECEIVED <br />JAN 9 ~ 1995 <br /> <br />Colorado lo1/ <br />Conservat' ster <br />IOn Board <br />The River Forecast Center (RFC) of the National Weather Service, along with cooperating <br />agencies, forecasts natural or unimpaired runoff volumes; that is, observed flows adjusted <br />for upstream water management. This publication, the Guide to Water Supply <br />Forecasting, is meant to assist users in interpreting that forecast effort by unambiguously <br />detailing exactly what adjustments to flow are used and how large those values typically <br />are. The following pages consist of alphabetized and numbered lists of forecast and <br />adjustment points. By cross referencing the two, it is possible to determine which <br />adjustments were applied to a given site. Immediately preceding the lists is a text and <br />visual interpretation of an example entry. <br /> <br />With regard to the magnitude of values, monthly averages are shown that reflect the latest <br />30 year (1961-90) period. In the Lower Colorado Basin (below Lake Powell), medians are <br />thought to better represent central tendency and are used in lieu of arithmetic averages. <br /> <br />TABLE OF CONTENTS <br /> <br /> pg(s} <br />I. INTRODUCTION . . . . . . . . . . 3 <br />II. GENERAL INFORMATION &: <br /> CONVENTIONS . . . . . . . 4 <br />III. EXAMPLE ENTRY . . . . . . . . . 5 <br />IV. ADJUSTMENTS CAN ADD UP . . . . . 6-8 <br />V. FORECAST POINTS . . . . . . . . 9-23 <br />VI. ADJUSTMENTS to FLOW . . . . . . 24-33 <br /> <br />2 <br />