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<br /> <br />O~0898 <br /> <br /> <br />~ the 1950 - 1981 data does not have a significant slope <br /> <br /> <br />(trend). Similar analyses on precipitation, srtowpack and <br /> <br /> <br />streamflow variables in the basin (including purgatoire <br /> <br /> <br />River at Ninemile Dam) show no trends. Of course, periods <br /> <br /> <br />of record (Figure 3) for these variables are not as long as <br /> <br /> <br />that for flow of the Purgatoire at Trinidad. The conclusion <br /> <br />of the time series analysis is that the hydrology of the <br />basin has been relatively constant over the last thirty <br /> <br /> <br />years. <br /> <br /><2. <br /> <br />/115'<.0 - etA'" 60}cuO a ..p. <br />Iq&o ~ QA-....<::t~o.:>oo-,t <br /> <br />Based on the above physical and statistical reasoning, <br />equation A was chosen as the best prediction equation for <br />annual Purgatoire River flows at Thatcher. <br /> <br />. <br />~ <br />I <br />I <br />I <br />I <br />I <br />I <br />Ie <br />I <br /> <br />-21- <br /> <br /> <br />-........ <br />