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Last modified
7/28/2009 2:29:21 PM
Creation date
7/24/2007 2:24:23 PM
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Weather Modification
Title
The Impacts of Snow Enhancement - Technology Assessment of Winter Orographic Snowpack Augmentation in the Upper Colorado River Basin
Date
1/1/1974
State
CO
Weather Modification - Doc Type
Report
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<br />i 'j <br /> <br />_. ~_. - -~ - <br /> <br /> <br />behi,!l.d thc. d<llili>Jespecilllly (lien G!!!y'on) will rcduccJhe future ulility- of <br />these dam~; Without major public works pl'Ogram", 111<' economic r:<ili!rn fro1l! <br />m~nicjpal. -Industrial. and ngrLQultw:aLuses-aS:..wcllas inte!.l1l01lIlJ?!il di\'~rsio!l_ <br />is expected [0 be re,latively small... _ <br />~ The.Colorado River Basin Project Act of 1968 (P.L.90-537) declared <br />that "the satisfaction of the requirements of thc Mexican Water Treaty from <br />the Colorado River constitutes a national obligation which shall be the' first <br />obligation of any water augmentation projGct planned pursuant to . . . this Act <br />and authorized by Congress." Tn flddition the act authorized the Central Ari- <br />zona Project ~wd five projects in the UpJler Basin (Animas-La I)I~lta. Dolores.. <br />Dilllas Creek, West Divide, and San Miguel) to bcconstrusn:d con~urrelltty <br />wit.h the CentnU Arizona Proje~t. Congress has neither authorized any aug- <br />lIlcntution projects nor has it appropriated any funds for the Central Arizona <br />nnd the fIve Upper Basin Projects. Nevertheless the actions of Congress in <br />P.L. 90-537 represent commitments on the Colorado Rive'r water supply that <br />would. under the water'supply conditions t!lat have existed in the recent past, <br />be greatly facilitated by the anticipated WOSA water supply increment. (f <br />the projects are built and there is enough natural water to satisfy aU of the <br />wmmitments of PL. 90-537 (including the Mexican Water Tr~aty) the ceo.. <br />nomic analysis' is basically the same as in the previous paragraph. <br />On th~ other hand, if tbeP.L. 90-537 projects arc completed and there <br />is insufficient natural water to meet the commitments. ,vaSA can "rescue" <br />beneHts that would otherwise be Jost. In this situation, all of the benefits rescued <br />are attributed to WQSA. Th~'ie have been c,'itinulted on the basis of the mtni- <br />m~t of satisfying the Mexican Water Treaty. or $30' million ~r year. <br />T~is cost is based on forgoing. benefit, in a81"lClllture- ftoml.$ _Mufof -water or <br />"transfcrrinj!" water from irrigation us<;rs._ <br />. In view of the water supply situation in the reccntpast in the Colorado <br />River, the -decisiou to. .appropriate construction funds to theP.L. 90-537 <br />project.s could allocate the WbSA water increment to proje.ct uses to. have <br />enoug,h water to ensure project viability. In_ this case, the cost of WOSA is <br />added to P.L 90-537 costs but the anticipated project benefits arc unchanged. <br />An anaJysis of the. bcnetit/cost ratios on which P.L. 90-537 authoriza- <br />tions were based show that th(~ {~conomic gains from the Central Arizona and <br />the five Upper Basin Projc~ts were marginal as they \vcre determined. Several <br />assumptions of the economic justification for the 'P.L 90"537 projects would <br />bear reevaluation for the following reasons: <br /> <br />Use of a discount rate of 2.5 to 3; 125 percent is lower than the oppor- <br />tunity cost of the project jilstifies. <br /> <br />Opport.unities fOt" settlement arc not ne.eded and would probably not be' <br />takcn up in the UpPt;r Basin. <br /> <br />Benefits, forgone by settlers in the. fonn of illternati.\'c employment op- <br />portunities (about $1,500 per farm family forthcWest Divide project) <br />appear underestimated. <br /> <br />I <br /> <br /> <br />l <br /> <br />xvii <br />
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