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<br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br /> <br />OiHJJ83 <br /> <br />STREAMFLOW RECORDS 5 <br /> <br />Gaging-Station Description <br /> <br />Gaging station locations are described in terms of latitude and <br />longitude and in relation to features that can be located in the field <br />or on a map. The size of drainage area is also given, modified if appro- <br />priate, where noncontributing areas are significant. Average discharge <br />is shown for the period of record used in processing the summaries and <br />may differ slightly from figures of average discharge published in other <br />reports. The reason is that the average discharge is usually based on <br />the entire period of record including incomplete years, whereas the <br />average discharge in this series of reports is based only on the complete <br />years of record used in the statistical summaries. <br /> <br />Tabulations <br /> <br />I <br />I <br />I <br /> <br />Three tables are presented for each station; flow duration and high <br />and low-flow sequence. Unless retyping was necessary for some reason, <br />these tables were reproduced from direct print-outs from electronic com- <br />puters, one which is a Datatron 220 used by the Geological Survey and <br />the other, an RCA 301 used by the Corps of Engineers. Using different <br />computers accounts for a slight, but discernible, difference in appearance <br />of the tabulations even though the same format was agreed on by both <br />agencies and both agencies used identical procedures and standards of <br />accuracy in processing the basic streamflow records. <br /> <br />Flow Duration <br /> <br />I <br />I <br />I <br /> <br />The flow-duration tabulations show the number of days in each water <br />year in each of some 20 to 35 class intervals of flow and the total cfs- <br />days for each water year. A summary follows this table showing the lowest <br />discharge in each class, the total number of days for the period of record <br />in each class, the cumulative number of days in each class beginning with <br />the highest interval, and the percent of time during the period of record <br />that the lowest discharge in each class was either equalled or exceeded. <br /> <br />High-Flow Sequence <br /> <br />I <br />I <br /> <br />The high-flow-sequence tabulations show the highest mean discharge <br />for consecutive periods of 1, 3, 7, 15, 30, 60, 90, 120, 150, 183, and <br />274 days in each water year. The maxinrum instantaneous peak flow is also <br />presented for each year, where available, as well as the mean annual dis- <br />charge for the water year. <br /> <br />I <br />, <br /> <br />I <br />