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<br />.; <br /> <br />'0 <br /> <br />. <br />-. <br /> <br />~ <br /> <br />In making an inventory of potential irrigation developments from <br />graund waters it is necessary to make certain assumptions in regard to <br />economic and engineering feasibility. <br /> <br />For an ultimate potential we assume that where water and soil are <br />available, crops and markets will be available to sustain an irrigated <br />agriculture at some future date. In contrast we assume that ground water <br />can be procured at rates limited by well development and pumping procedures <br />now in use. Because of the preponderence of deep soils on smooth gentle <br />slopes in relation to existing ground water supplies, land areas hav:l. ng <br />steep bro~en topography or very shallow soils have not been considered as <br />potentially irrigable areas. All ground waters are assumed to be suitable <br />for use unless definite information is available as to the presence of <br />harmful mineral concentrations in the water. <br /> <br />I. Red River Basin Above Head of Lake Texoma <br /> <br />A. High Plains Portion <br /> <br />A large portion of the water supply which is available from <br />depths of less than 200 feet in quantities in excess of 500 gallons per <br />minute has been developed for irrigation use in this area. However, the <br />land area having characteristics suitable for irrigation development is <br />considerably in excess of the present water supply. <br /> <br />If it becomes feasible to lift water from depths in excess of <br />200 feet there is a sizeable area in Carson and Gray Counties which has a <br />potential for irrigation development. There are also weak water supplies <br />(less than 500 g.p.m.) in portions of Potter, Randall, Carson, and Armstrong <br />Counties, some of which is available at depths of 100 to 200 feet. <br /> <br />B. Portion Below the High Plains <br /> <br />The ground waters in this area are limited in extent and usually <br />available at rates of less than 500 gallons per minute. The major ~reas <br />for potential development occur in Donley, CollingSworth, Childress, <br />Hardeman, Foard, Wilbarger, Ylichita, Clay, Montague, and Cook Counties with <br />some possible very limited development in Hemphill, Wheeler, Knox, and <br />Baylor Counties. <br /> <br />Some of the waters in this area are highly mineralized and are <br />either unsuited for use or should be used with extreme caution. The quality <br />of the waters varies considerably between adjacent wells and therefore <br />cannot be classified on a broad scale. <br /> <br />II. Red River Basin Below Head of Lake Texoma <br /> <br />Because of humid climatic conditions prevalent in this area any <br />irrigation development will be of a supplemental nature or for very <br />speciali~ed crops such as rice, strawberries, and off-season truck crops. <br /> <br />49 <br />