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<br />" <br /> <br />10 <br /> <br />EXAMPLE METHODOLOGIES <br /> <br />Following are some examples of how this methodology was used in <br />the Colorado River Basin Salinity Control Studies. The examples <br />include Grand Valley, Colorado; Uintah Basin, Utah; Big Sandy <br />River, Wyoming; McElmo Creek, Colorado; Price-San Rafael Rivers, <br />Utah: and Wellton-Mohawk Irrigation and Drainage District, <br />Arizona. <br /> <br />Evaluations of salt loading from different salinity units in the <br />ColoradO Basin illustrate some of the differences in the geo- <br />hydro-chemical processes. Each unit will have some features <br />unique to that unit, but basic hydrosalinity processes fall into <br />two categories: 1) Those irrigation projects along river systems <br />where the underlying aquifers' major salt supply is from <br />irrigation water; and 2) those units underlain with saline <br />geologic:'formations with an infinite salt supply. <br />