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<br />CONSULTING <br /> <br /> <br />.....-........ <br /> <br />TELEPHONE <br /> <br />HYDROLOGIST <br /> <br />(303) 221.0050 <br /> <br />Charles F. Leaf, P. E. <br /> <br />4412 E. MULBERRY_1l3 <br /> <br />FORT COLLINS. COLORADO 80S21 <br /> <br />No~mb:.~_~9.l J9.16.~--- "rR~ <br />! OfFI CIAL ~) tC 1_2976i E ' <br />FILE COpy t p , <br />INFori:':...\TION Y \ <br />tor~{-TD: ~---._~~ Lr <br />.,.....-... .' . ,.. <br />P ,.,O! :T::: Tn ll~;',i~', 1 OAT.: 0 <br />Resou'rces Management 1~;;t:OO' 7'-~' ' <br />_ - .~, d..t-. t /;T, t.' , . <br />~ '1_' I <br /> <br />)i'H- <br />I _ <br />t--r I <br />h--,_ <br />1....----. <br />.'.--- <br />Ab}J;ttoi! <br />'- <br /> <br /> <br />Dr. Archie Kahan, Chief <br />Division of Atmospheric Water <br />USDI, Bureau of Reclamation <br />Building 67 <br />Denver Federal Center <br />Denver, Colo. 80225 <br /> <br />Dear Archie <br /> <br />Enclosed for your consideration is the report prepa~'e(rfby the <br />of Skywater Conference IX, recently held at Vail, C910~~. <br /> <br />After "much weeping and gnashing of teeth" in coming to grips with a <br />most complicated problem, our section accomplished two things: <br />1. The development of a comprehensive interactive'ana1ytica1 <br />framework that entails evaluation of weather modification <br />at three levels in the abiotic system. These levels include <br />the atmospheric, precipitation. and river levels. <br />2. The development of sensitivity matrices that identify <br />environmental areas where weather modification would have <br />the most significant potential impacts. <br /> <br />Our recommendations to the Bureau after this workshop are as follows: <br />1. "The Abiotic Section strongly recommends that the Bureau adopt <br />the principles and analytical framework proposed in this report. <br />Such a framework would be directed toward process oriented <br />"quantification" of weather modification impacts on the abiotic <br />system. In addition, it would be a useful planning tool for <br />guiding future research, for decision making, and for defining <br />critical data needs. <br />2. The Abiotic Section also recommends that the sensitivity n~trices <br />developed in this report be used as a guideline for selecting <br />research priorities in the abiotic sector. <br />3. Finally, the Abiotic Section recommends that the Bureau deve.10p <br />an analytical framework similar to that proposed in this report <br /> <br />39 <br /> <br />NOTICE <br />I.,. &fdi Cftd~ .~ <br /> <br />iJf.' (} <br />,~v <br /> <br />1~ <br />