Laserfiche WebLink
A frequency analysis for Colorado River-flows was conducted. <br />We present information on the number of days that had a mean <br />daily flow 'of over 10,000, 30,000, 40,000, 50,000 and 60,000 cfs... <br />-..for the entire record of the Cisco gauge,-_1914-1917, and 1923-' <br />1993...-These data and the frequency of flows of given magnitude <br />are shown in Table 1. <br />Figure 5 presents total number of days for each water year <br />that average daily-flow met or exceeded 10,000 cfs. This figure <br />is presented more to indicate the frequency of years with <br />extremely low flows.- Years with less than 20 days of 10,000-cfs <br />or more only occurred two times between the beginning of-this <br />record and the time of dam construction on the river. However, <br />many-years with less than 20 days of greater than 10,000 cfs <br />flows have occurred since the late 1950's, particularly since <br />1977. Water .year 1977 and 1989 did not have a single day-with <br />average flow of greater than 10,000 cfs. <br />COLORADO RIVER AT CISCO <br />DAYS OVER 10, 000 CFS-.MEAN DAILY FLOW. <br />Sao <br />fzo <br />goo <br />N <br />>-- <br />Q <br />80 <br />L.~ <br /> <br /> <br />W 60 <br />m <br />