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<br />. <br /> <br />. <br /> <br />- <br /> <br />The maximum recorded temperature, 112 degrees, was recorded at the <br />Experiment Substation in Au~ust 1936. The minimum, -5 degrees, was recorded <br />at the same station in January 1930. In general, temperatures during the <br />winter are relatively mild, \lhereas st1lnmer temperatures are fairly high. <br />Daily maximum temperatures of 100 degrees and over for 15 to 30 consecutive <br />days are not W1usual. <br /> <br />The frost-free growing season averages 237.days. Wind movements <br />average 12 to 14 miles per hour with occasional periods of high winds. High <br />velocity, hot, dry \dnds, usually from the southeast, often curtail yields <br />of most crops conunonly grOlJn and are especially damaging to corn and some <br />vegetables. Hailstorms occur occasionally but are seldom destructive over <br />a wide area. <br /> <br />Irrigated A9rea~e <br /> <br />The irrigation system was completed in 1924, and dt~ing 1925, the <br />first full year of operation, a total of 19 874 acres \TaS irric;o.ted. AlthoUIP <br />the acreage classed and assessed as irrigable has ranged from slightly over <br />47,000 acres in 1924 to 40,085 acres in 1950, the acreage actually irrigated <br />ho.s never approached these figures. ~ ']/ The mo.;drauin irrigated acreage <br />was reaohed in 1935 vhen 33,142 acres \Jere irrigated. The acreages of <br />irrigated land and irrigated crops for individual years since 1933 are givon <br />in Table 4. <br /> <br />Water Supplv <br /> <br />River.. <br />IIlO.tely <br /> <br />Hater supplies fer this project are obtained from the 1!ichita <br />Lake J\emp, the storage reservoir, stores the run-off from apprexi- <br />2,000 square miles of the 1,Iiehito. River draimge basin. <br /> <br />Quality <br /> <br />The surface 0:1:' the clraiooge area is composed of exposed "red beds" <br />or soils derived frem them. These "red beds" and their derivatives <br />contain lo.rgo quantities of soluble salts and through the proeess <br />of erosion, both normal and accelerated, these salts aro constantly <br />being exposed, dissolved and carried away by the run-off waters. <br />A number of soluble salts in various quantities are carried in the <br />water used for irrigation but not all of them 0.1'0 deleterious.. <br />The injurious salts are magnesium sulphato and the chlorides of <br />sodium and magnesium, and these constitute a little ever one-half <br />of the total dissolved solids~ 121 <br /> <br />y <br />9/ <br /> <br />Annual :teport, Hichita County Hater Improvemont Distriet No.2. 1950. <br />Hughes, Hm. F. "Irrigated Agriculture in the Subhumid and Humid <br />ClimD.tio Zonos, Part I, Irrir,ation in the Hichita Valloy of Texas". <br />Bur. Agr. Econ., U.S. Dept. Agr_ Jan. 1946. (Mimeo.) <br />Hughes, Hm. F. "Irrigated Agriculture in tho Subhumid and Humid <br />Climatio Zones, Part I, Irrigation in the llichita Vaney of Texas", <br />Op. cit. <br /> <br />121 <br /> <br />12 <br />