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<br />7-2090 (4-81) <br />Bureau of Reclamation <br />1. REPORT NO. <br />R-93-17 <br /> <br />4. TITLE AND SUBTITLE <br /> <br />TECHNICAL REPORT STANDARD TITLE PAGE <br /> <br />. <br />. .. . - .-. . .....- ":.. . -.. <br /> <br />3. RECIPIENT'S CATALOG NO, <br /> <br />Precipitation Gauge Testing <br />on the Wasatch Plateau, Utah, <br />During Early 1993 <br /> <br />7. AUTHOR(S) <br />Arlin Super <br /> <br />5. REPORT DATE <br />November 1993 <br />6. PERFORMING ORGANIZATION CODE <br /> <br />D-3720 <br /> <br />8. PERFORMING ORGANIZATION <br />REPORT NO. <br />R-93-17 <br /> <br />9. PERFORMING ORGANIZATION NAME AND ADDRESS <br /> <br />10. WORK UNIT NO. <br /> <br />Bureau of Reclamation <br />Denver Office <br />Denver CO 80225 <br /> <br />11. CONTRACT OR GRANT NO. <br /> <br />13. TYPE OF REPORT AND PERIOD COVERED <br /> <br />12. SPONSORING AGENCY NAME AND ADDRESS <br /> <br />Same <br /> <br />14. SPONSORING AGENCY CODE <br />DIBR <br /> <br />15. SUPPLEMENTARY NOTES <br /> <br />Microfiche and hard copy available at the Denver Office, Denver, Colorado <br /> <br />16. ABSTRACT <br /> <br />The Bureau of Reclamation performed an independent evaluation of an ETI (Electronic <br />Techniques, Inc.) precipitation gauge at the High Altitude Site on the western slope of the <br />Wasatch Plateau in central Utah. The ETI gauge could provide a desirable alternative to <br />conventional recording gauges in several applications, including evaluation of cloud seeding <br />projects, if it performs as advertised. The testing program was intended to determine its <br />performance in a winter mountain environment. <br /> <br />The ETI precipitation gauge proved to be reliable from time of installation in late November <br />1992 until removal in late March 1993. The only problem found was an occasional tendency <br />for the gauge to falsely indicate minor snowfall amounts, usually 0.01 in. snow water <br />equivalent, during relatively warm midday periods. Observations indicated that the ETI <br />gauge can provide accurate precipitation measurements of mountain snowfall when protected <br />from significant wind. <br /> <br />17. KEY WORDS AND DOCUMENT ANALYSIS <br />B. DESCRIPTORS-- atmospheric research! meteorology/ weather modification! cloud seeding! <br />meteorological instruments! precipitation gauges! <br /> <br />b. IDENTIFIERS- Wasatch Plateau <br /> <br />c. COSA TI Field/Group 04B <br />18. DISTRIBUTION STATEMENT <br /> <br />COWRR: 0402.1 <br /> <br />SRIM: <br />19. SECURITY CLASS 21. NO. OF PAGES <br />~=~~;"~,~ 10 <br />20. SECURITY CLASS 22. PRICE <br />(THIS PAGE) <br />UNCLASSIFIED <br />