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<br /> <br />. <br /> <br />CHAPI'ER 1 <br /> <br />GENERAL DISCUSSIONS <br /> <br />The West Elk Mountains, source of the project water supply, receive <br />sufficient precipitation to sustain heavy growths of vegetation. Winter <br />precipitation in the mountains occurs as snolr which melts principally in <br />the months of May and June. <br /> <br />No weather records have been obtained within the project irrigable <br />area but records from the Crawford station located immediately to the <br />north and from the Montrose station located about 15 miles southwest of <br />the area provide a reliable indication of the climatic conditions. The <br />precipitation on the project lands is estimated to average about 10 inches <br />annually which is adequate to support only light growths of hardy native <br />grasses, bushes, and trees. Dry farming has been attempted in the area <br />but has proved unsuccessful because of inadequate rainfalL The 135-day <br />average frost-free period is suffi cient for the production of general farm <br />crops but is too short to mature most 1'ruit and truclt crops. Temperature <br />extremes as recorded at Crawford are 930 and -250. Pertinent climatolog- <br />ical data from the Crauford and Montrose weather stations are shmm in the <br />follmring table. <br /> <br /> Montrose station l' <br />. Avg. Avg. Avg. Avg. <br /> max. Avg. min. Avg. max. Avg. min. Avg. <br /> temp. temp. temp. precip. temp. tem:p. temp. p:eCiy <br /> Month OF. (OF. OF. in. ) OF. OF. OF. ~n. <br /> Jan. 0.1 25. 10. 0.77 37.1 2 .0 12.9 .56 <br /> Feb. 39.4 26.9 14.4 .51 43.2 3L2 19.5 .59 <br /> Mar. 48.0 35.2 22.3 .55 52.5 39.1 26.7 .64 <br /> Apr. 56.8 42.9 29.0 .87 62.4 48.9 34.2 1.01 <br /> May 66.2 52.0 37.1 .89 12.1 57.5 43.2 .71 <br /> June 77.2 61.9 46.6 .81 83.1 66.9 49.2 .50 <br /> July 82.0 67.8 53.6 L25 88.5 73.3 55.2 .72 <br /> Aug. 80.1 65.9 51.7 1.20 85.5 70.7 53.3 1.24 <br /> Sept. 73.4 58.4 43.3 L16 78.2 63.3 45.6 1.02 <br /> Oct. 62.8 48.2 33.5 1.11 65.6 51.6 34.8 .87 <br /> Nov. 51. 5 37.2 22.9 .87 50.2 37.0 23.3 .59 <br /> Dec. 38.3 25.4 12.4 .91 39.0 28.6 15.0 .57 <br /> Annual ~~.6 !>5.6 31. 5 10. eo 63.1 49.5 34.4 9.0b <br /> Y 1 5-1957. <br /> Population and Trade Centers <br /> Only about 200 people, nearly all of whom are engaged in farming or <br /> ranChing, live in the project area. The population gradually increased <br /> from initial settlement in 1880 until it reached about 300 in 1920. The <br /> decrease since 1920 has been due to the trend toward larger farm units, <br />. the use of modern labor-saving farm e<J.uipment, and to drouth conditions <br />that prevailed generally from 1931 to 19~0 and since 1950. <br /> 3 <br /> <br /> <br />