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<br />2862 <br /> <br />Temperatures are relatively moderate. The average <br /> <br />. monthly temperatures at Cortez and Mesa Vet-de are shown in <br /> <br />Figure 7. <br /> <br />The avcra'Je cmnl1Lll tempera tl1re at Cort.ez is 48. 80F; <br /> <br />Figure 7 (caption on next page) belongs near here. <br /> <br />the highest mean monthly temperature is 71.30 in July; the <br /> <br />lowest is 27.00 in January. <br /> <br />Recorded at the Mesa Verde <br /> <br />station, the average mean annual temperature is 50.60; the <br /> <br />highest mean monthly temperature is 73.10 in July', ;:md :::iC <br />. 0 <br />lowest lS 29.5 ~n January. <br /> <br />At Cortez the mean date of <br /> <br />the last sprlng freeze is May 15 (using 320 as freeze <br /> <br />threshold), and the mean date of the first fall freeze is <br /> <br />September 29. <br /> <br />~le lowest temperature recorded in 1961 was <br /> <br />. <br /> <br />_160 on December l~ 3.t Cortez and _40 on December 13 at <br /> <br />Mesa Verde National Park headquarters. <br /> <br />Vegetation normal to semlarid regions grows in the <br /> <br />project areel. <br /> <br />In th,c lower elevations there is a relatlve1y <br /> <br />spelrse to modereltc cove:::- of grass and cactus, sagebrush, <br /> <br />and cottonwood. <br /> <br />In the higher tableland and the mountains, <br /> <br />'- <br />the vegetation includes pinon and juniper and some pi~on <br /> <br />and yellow plne. <br /> <br />. <br /> <br />J.z- <br />