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C <br />C <br />c 0 <br />) <br />U C <br />N <br />O C <br />U <br />c <br />o C <br />Co <br />a C <br />0 <br />U C <br />0 <br />o E E m Q m E <br />t m Q a) <br />O 'o a) L <br />Z C N <br />Month <br />Figure 7: Region 22 — Upper Colorado drainage correlation to water year streamflow at Glenwood <br />Springs, CO. <br />Figure 8 shows the same relationship for region 25 using the Cache La Poudre drainage <br />water year streamflow. Again, the Palmer index shows a highest correlation to water <br />year streamflow but the correlations do not peak until July. This means that it is more of <br />a diagnostic and less of a predictive tool than in the other watershed. But nevertheless, <br />the Palmer shows the best correlations in most every month. <br />0.9 <br />0.8 <br />0.7 <br />a 0.6 <br />U <br />d) 0.5 <br />O <br />U <br />c 0.4 + Palmer <br />O r i- 3 -Month SPI <br />Co I <br />0.3 6 -Month SPI <br />X 9 -Month SPI <br />(� 0.2 —A 12 -Month SPI <br />t 24 -Month SPI <br />0. +48 -Month SPI <br />0 - <br />U N E C .fl Q —3 m N <br />O Z D L <br />Q <br />N <br />Month <br />Figure 8: Region 25 - Cache La Poudre drainage correlation to water year streamflow at the mouth <br />of the canyon. <br />