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<br />003JS8 <br /> <br />. <br /> <br />. <br /> <br />Seven new stations were established in connection with the Upper Colorado <br />River storage Project; these are Crystal River at Placita, East Divide <br />Creek near Silt, Falls Creek and Junction Creek near Durango, Frying Pan <br />Creek at Ruedi Quart~ Creek near Ohio City, and San Miguel River near <br />Telluride. (4) In Nevada, stations were discontinued on the Humboldt <br />River near Lovelockand Summers Creek near Bri4geport (California); <br />three new stations were established, on south Fork Owyhee River at Spanish <br />Ranch near Tuscarora, Overland Creek near Ruby Valley, and Cleve Creek <br />near Osceola. Sites for stations required by the Humboldt River Valley <br />study were explored by aerial reconnaissance between the gaging stations <br />at Comus and near Rose Creek. (5) In New Mexico, a new station was com- <br />pleted on Largo Creek near Mangas, and the station on San Juan River near <br />Archuleta was relocated 4 miles downstream; 22 indirect measurements of <br />peak discharge were made at 15 stations and 6 ungaged sites. (b) In <br />Utah, 4 stream stations arid 2 reservoir stations were discontinued; 9 <br />flow stations and 40 crest-stage stations were established, (7) In <br />Wyoming, the station on Muddy Creek above, Baggs has been rescheduled to <br />measure only storm runoff; seven crest-stage stations were installed in <br />the Green River basin. <br /> <br />Offset copy for streamflow records through 1950 was completed for <br />the Pacific Slope in California. <br /> <br />Significant progress in interpretive and hydrologic studies includes <br />following: (1) In California, investigations wereftarted on the effects <br />of urbanization on the rlowregimen of Permanente Creek, Santa Clara <br />County; on the mechanics of wave travel in natural stream channels; and <br />on seepage losses from streams in southern California. Also, a pilot <br />model of a stroboscopic meter to measure velocities in swift streams was <br />assembled, and final-draft reports were completed on tide-affected flow <br />of the Sacramento River at Sacramento and on the floods of 195$. (2) In <br />Utah, a study of flood frequencies and magnitudes in the Great Basin was <br />begun. <br /> <br />Ground Water. - New starts, completions, and noteworthy findings <br />in ground-water investigations included: (1) in Arizona, new starts on <br />the Fort Huachuca Military Reservation (COChise County) and on water <br />supply for Luke Air Force Base. The yearly State-wide summary of <br />ground-water conditions, 195$-59 was released to open file. (2) In <br />California, new starts on the Kern River fan in southern San Joaquin <br />Valley; on a reappraisal of the Santa Maria Valley, Santa Barbara <br />County; and on a reconnaissance of the sudden Estate (Point Arguello <br />extension), Santa Barbara County. Projects were completed on the <br />San Antonio Valley, Santa Barbara County. on a ':reappraisal of the, <br />Goleta-Carpenteria area. allJo Santa Barbara County; also on the vicinity <br />of Aqua Caliente Spring, and on reconnaissance of the middle Mojave <br />River Valley and the Twenty-nine Palms-Yucca Valley area, all in San <br />Bernardino County. Annual reports on the Joshua Tree and Death Valley <br />Monuments were made to the National Park Service. <br /> <br />-7- <br /> <br />'._0' <br /> <br />