Laserfiche WebLink
<br />. Part 2" Streamflow Data (Contd) <br /> <br />. <br /> <br />'~ <br /> <br />1908~1942 period, for comparison with years and periods when runoff <br /> <br /> <br />conditions were abovE!' and below. average, In 19!.t2.new. and higher records foJ" <br /> <br /> <br />total annual streamflow'volumes were established at all gaging stations for <br /> <br /> <br />which data are herein assembled. Total volumes of the year 1921 are listed, <br /> <br /> <br />since in June of that year occurred the greatest flood of record in the <br /> <br /> <br />upper Arkansas River, At the other extreme are the low-flow' oonditions of <br /> <br /> <br />drouth years suoh as 1934 and 1940. Averages are shown for eo- ""'8t..de-eade". suoh as <br /> <br /> <br />1914-1923, and a "dry deoade" suoh as 1931~1940, eaoh of whioh differ materially <br /> <br /> <br />from long~tlmEl' or period average values. <br /> <br /> <br />During a future .oyole of 35~years similar to 1908-1942, exoept that <br /> <br /> <br />record-breaking volumes (such as 1942) and intensities (suoh as 1921) failed <br /> <br /> <br />to occur, the resulting total streamflow. volumes (indicated in summary Table D <br /> <br /> <br />in the line designated "Avge. lesEr '42, '21") would reduoe the oaloulated <br /> <br /> <br />period averages by 11,000 aore feet at Canon City, and by more than 50,000 <br /> <br /> <br />aore feet annually for stationEr at and below.Oaddoao This comparison indicates <br /> <br /> <br />the distortion in average values resulting from tho inclusion in the period <br /> <br /> <br />totals of infrequent abnormal conditione concerning whioh aocurate forecasts <br /> <br /> <br />are impossible. <br /> <br /> <br />Median year values shown in summary Table D indioate the quantities <br /> <br /> <br />of stre~flow usually to be expeoted. Median values' exceed period average~ at <br /> <br /> <br />Canon City, indicating that above average streamflow. quantities are the rule <br /> <br /> <br />rather than the exception at that point, but fall far below. period averages <br /> <br />_u_ <br />