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<br /> 2 <br /> TABLE I-A <br /> AVERAGE TEMPERATURES AND PRECIPITATION <br />.. <br />" <br /> Average Monthly Temperature Average Monthly Precipitation <br /> Deqrees F. Inches <br /> Month Ft. Co11 i ns Greeley G rand Lake Ft. Coll ins Greeley Grand Lake <br /> January 26.6 24.1 15.2 0.38 0.35 1.59 <br /> February 29.7 28.4 17.9 0.50 0.36 1.32 <br /> March 36.2 36,,0 23.7 0,,95 0.72 1.36 <br /> Apri I 46.4 47.1 33.7 1.86 1.45 1.87 <br /> May 55.4 57.0 43.2 2.90 2.49 1,,49 <br /> June 64.9 67.3 50.7 1.73 1.42 1.29 <br /> July 71.0 73.7 56.1 1.15 1.19 2.03 <br /> August 69.2 71.7 55.2 1.53 0.81 1.79 <br /> September 60.7 62. I 49.0 I. 20 0.76 1.3J <br /> October 49.8 49.8 39.5 1,08 0.85 0.93 <br /> November 36.7 35.1 25.7 0.49 0.39 0.98 <br /> December 30.4 27,6 18.1 0.42 0.33 1,,49 <br /> Annual 48.1 48.3 35.7 14.19 11.12 17.45 <br /> <br /> <br />The Long Draw Reservoir area climate is typical of the high Alpine type <br />country associated with Colorado elevations over 10,000 feet. The snow pack <br />generally remains on the ground to the middle of June. Access to Long Draw <br />Reservoir from Fort Collins is normally available until November, at which <br />time snow accumulation is sufficient to halt normal vehicular traffic. <br /> <br />The average first day of operation for the Grand River Ditch ,is May 24. <br />In some years the Grand River Ditch transports water across the Continental <br />Divide as early as May 7. <br /> <br />The average growing season in the Fort Collins - Greeley area is <br />generally represented by the frost free period, defined by 280F temperatures. <br />The frost free period for the last ten years is presented in Table I-B. <br /> <br />Precipitation in the Fort Collins"- Greeley area is adequate to support <br />the semi-arid natural vegetation, stock grazing areas, and marginal dry land <br />farming. But water consuming crops of forages, grains, sugar beets, corn and <br />potatoes require irrigation. Precipitation is highly erratic, varying from <br />less than half of normal in drought years to nearly twice the norm in wet <br />years. The winter months of November through February produce less than half <br />the annual precipitation, whereas during the late spring and early summer, <br />May through July, nearly half the annual precipitation falls. <br />