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<br />Droin~ <br /> <br />Drainat,je <br />discharges <br />into drains i <br />1,520mg/1 <br /> <br />c." <br />Q) <br />W <br /> <br />IRRIGATED AREA <br />RECEIVING RIVER WATER <br /> <br />NATURAL VEGETATION AREA <br />RECEIVING GROUND WATER <br /> <br /> <br />1 <br /> <br /> <br />"'--w~ carried up <br />by roots and used <br />by plants; salts <br />remQ in in root zone <br /> <br />Most of subsurfoce <br />flow goes to droin. <br />Tends to II ush out <br />ground woter. <br /> <br />Port of subsurfoce <br />flow goes to noturol <br />vegetotion. Tends to <br />flush out ground woter. <br /> <br />FIGURE 4 <br />TYPICAL SUBSURFACE DRAINAGE FLOW <br />COLORADO RIVER INDIAN RESERVATION <br />