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<br /> <br />. <br /> <br />. <br /> <br />In the study of hydrology of Death Valley, a full-year's reoord <br />of evaporation from a standard evaporation pan was completed on May 1, <br />1959. The total,measuredevaporation, 155.33 inches, is the greatest <br />yet reoorded in the United States. <br /> <br />In the study of water losses by phreatophytes, five lysimetsrs were <br />constructed in an area of saltcedarin the Gila River valley near Buckeye, <br />Arizona. Construction was in collaboration with the Bureau of Reclamation. <br />The lysimeters, each 14 feet deep and 1,000 square feet in surface area, <br />are unique in having been made by s~cavation and placement .of a plastic <br />membrane, followed by transplantin~to re-establish a fairly mature salt- <br />cedar cover. ' <br /> <br />For a similar stu~ of water losses by greasewood, a test area was <br />selected in the Humboldt River valley near Winnemucca, Nevada. <br /> <br />-10- <br />