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<br />7-2090 (4-81) <br />Bureau ot Reclamation <br /> <br />TECHNICAL REPORT STANDARD TITLE PAGE <br /> <br />1. REPORT NO. 12. GOVERNME NT ACCESSION 1\0. 3. RECIPIENT'S CATALOG NO. <br />4. TITLE AND SUBTITLE 5. REPORT DATE <br /> SNOWPACK AUGMENTATION RESEARCH NEEDS June 1, 1982 <br /> 6. PERFORMING ORGANIZATION CODE <br /> A History of Weather ~~dification in Colorado <br />7. AUTHOR(S) 8. PERFORMING ORGANIZATION <br /> Barbara C. Welles REPORT NO. <br />9. PERFORMING ORGANIZATION NAME AND ADDRESS 10. WORK UNIT NO. <br /> Colorado Department of Natural Resources <br /> Weather Modification Program 11. CONTRACT OR GRANT NO. <br /> 1313 Sherman Street, Room 718 9-07-85-VOO27 <br /> Denver, Colorado 80203 13. TYPE OF REPORT AND PERIOD <br />12. SPONSORING AGENCY NPlME AND ADDRESS COVERED <br /> Bureau of Rec1ama t ion Final Report <br /> Division of Atmospheric Resources Research May 1979 - June 1982 <br /> PO Box 25007 14. SPONSORING AGENCY CODE <br /> Denver, Colorado 80225 DIBR <br />15. SUPPLEMENTARY NOTES <br />16. ABSTRACT <br /> Weather modification activity in Colorado is regulated by state statute <br /> (Title 36, Article 20, C.R.S. 1973) and administered by the state Depart- <br />ment of Natural Resources. The main focus of weather modification <br /> activity in the sta te is the augmentation of winter snowpack. Federal <br /> research programs have included hail suppression, snowpack augmentation, <br /> and the transport and diffusion of seeding materials. Commercial projects <br /> to affect precipitation have been conducted to suppress hail, to increase <br /> rain, and to augment winter snowpack - with the last being the predominant <br /> commercial activity in recent years. <br /> This document includes identification of needed research projects of <br /> particular importance to the state, a history of Colorado weather <br /> modification legislation and br ief descriptions of projects conducted <br /> af ter 1972 from the files of the Department of Natural Resources. <br />17. KEY WORDS AND DOCUMENT ANALYSIS seeding/ <br />a. DESCR/PTORS-- / weather modification/ winter orographic cloud in- <br /> duced precipitation/ snowpack augmentation/ environmental effects/ envir- <br /> onmental education/ community impacts/ public involvement/ water manage- <br /> ment (applied) , project design and eva1uation/ decision making/ policy de... <br /> velopment/ licenses/ permits/ soc ial impacts/ political impacts/ <br />b. IDENTIFIERS-- / Colorado River Bas in/ State of Colorado/ <br />Co COSA T I Fie Id/Group 04/B COWRR: 0402.1 SRIM: <br />18. DISTRIBUTION STATEMENT 19. SECURITY CLASS 21. NO. OF PAGES <br />Available from the National Technical Information Service, Operations (THIS REPORT) <br /> UNCLASSIFIED <br />Divisian, 5285 Port Royal Road, S/Jringfield, Virginia 22/6/. 20. SECURITY CLASS 22. PRICE <br /> (THIS PAGE) <br /> UNCLASSIFIED <br />