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<br />148-280 (1-76) <br />Bureau of Reclamation <br /> <br />TECHNICAL REPORT STANDARD TITLE PAGE <br /> <br />I; <br />r <br /> <br />1. RE PORT NO. r'" GOVERNMENT ACCf;S"ON NO. 3, RECIPIENT'S CATALOG NO. <br /> > <br />4. TITLE AND SUBTITLE 5. REPORT DATE <br /> An overview of the Skywater IX Conference on September 1977 <br /> Precipitation Management and the Environment 6, PERFORMING ORGANIZATION CODE <br /> Discussion and Summary Reports <br />7. AUTHORlS) 8, PERFORMING ORGANIZATION <br /> REPORT NO. <br />9, PERFORMING ORGANIZATION NAME AND ADDRESS 10, WORK UNIT NO, <br /> Engineering and Research Center 11. CONTRACT OR GRANT NO. <br /> Bureau of Reclamation <br /> Denver, Colorado 80225 <br /> 13. TYPE OF REPORT AND PERIOD <br />12. SPONSORING AGENCY NAME AND ADDRESS COVERED <br /> Same <br /> 14. SPONSORING AG'ENCY CODE <br />15. SUPPLEMENTARY NOTES <br />16. ABSTRACT <br />Called' to assess results and solicit contributions for future planning in the Bureau of <br />Reclamation's weather modification research, the Sky water IX Conference held six workshops, <br />each assembled by an appointed convener. Abiotic processes were found best understood as to <br />water yield and least so as to erosion and fluvial geomorphology. Alpine settings are most <br />sensitive, Erosion and mass wasting are leading issues for summer programs, and snow duration <br />for winter programs. Effects on vegetation in the High Plains are seen to come mostly from <br />possible changes in land use and cultivation stemming from rain stimulation, In alpine areas, <br />snow duration, especially in areas of drifting, would be the most important factor, Animal <br />species selected as impact receptors include pronghorns affected by possible encouragement of <br />encroaching Civilization, and elk and mule deer affected by possible influence on range <br />conditions, especially winter range. Anticipated societal benefits of more crops and clean <br />power face barriers in the lack of adequate determination of ownership and pricing of water <br />developed by precipitation augmentation, and the lack of appropriate institutions for carrying <br />it on. Seeding agents are thought to have no significant effects. An environmental overview <br />noted concern for possible initiation of long-term trends, linkage with conservation activities, <br />and information transfer in the context of a regional concept. Implications for planning of <br />Sky water environmental studies are discussed. <br />17. KEY WORDS AND DOCUMENT ANALYSIS <br />a. DESCRIPTORS-- / weather modification/ precipitation management/ precipitation <br />enhancement/ cloud seeding/ environmental effects/ ecology / ecosystems/ water resources <br />management/ cloud seeding potential/ <br />b. IDENTlFIERSu/ Great Plains/ High Plains/ Rocky Mountains/ Sierra Nev~da/ Great Basin/ <br />Western United States <br />c. COSATI Field/Group 04B COWRR: 0402.1 <br />18. DISTRIBUTION STATEMENT 19, SECURITY C,LASS I. NO, OF PAGES <br />Available from the National Technical Information Service,. Operations (THIS REPORT) 223 <br /> UNCLASSIFIED <br />Division, Springfield, Virginia 22151, 20, SECURITY CLASS 22, PRICE <br /> (THIS PAGE) <br /> UNCLASSIFIED <br /> <br />I' <br /> <br />i <br />1 <br />~ <br />I <br /> <br />1 <br /> <br />, <br />~ <br /> <br />j' <br /> <br />1 <br />. <br />1 <br />i <br />( <br />, <br />