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<br />~----'____-__~~___~_____'_'~_.___~_' ",_""__.'_.._A_~__._:_,,.._.. _ ..... _._u-'-_____.___.~ .......c.__.___., "._ ~_ ._ _ _u.' ..~. m .___ <br /> <br />'~Ofj 22 3 2~< <br /> <br />2e.2 <br /> <br />environment, formulate and describe in writing recommendations on how the following <br />features could be effectively modeled in the calculated and baseline scenarios of the Phase IT <br />Colorado River Basin model. Each feature will be able to be turned on or off as described <br />in the associated documentation. <br />1. Reflection of the Orchard Mesa Check settlement in the baseline <br />scenario. This will like y mvolve onI ata changes uch as: 13['; ? <br />adding an ~<rre,,~tf'.cl ~ tJ to the historic users pool in II <br />Green Mountain Reservoir f <br />adding a new reservoir account and bQpkover provisions to <br />Hallow for nonconsumptive use ofThe surplus wafer of the <br />historic users pool <br />modification of priority of 400 cfs power right and orchard <br />mesa check to conform to settlement agreem~ <br />Reduced diversion demand associated~th~and ValleY~jProject?) <br />as l1(ojected by the USBR. WI <br />~:~ lLL..~.lt of an account in Ruedi Reservoir to be used to supplement <br />~~c:~~; the 15 mile reach and establishment of operating criteria for that <br /> <br />C~ect Wolford Mountain reservoir decrees and capacities. Establish an <br />account in Wolford Mountain Reservoir to be used to supplement flows in the <br />IS 'Ie reach. I J ';>0'0 <<-{. <br />C~inated r~eFVo' operationsJpass{ng ofinfljl)Vs-eai1yip runoff~ _ <br />poss' ly ti~fo flow t do tfuam gages)..--Tliis may likely'invorvethe use '-----'"' ,f,Iw <br />ofa reCasting rule. . 7 v.tyfr j <br />~ means of easily prioritizing the above operations (recognizing that each ?"wJ .11 <br />operation may include a number of subfeatures) in relation to each other and ' <br />to other water rights on the river. J <br />In an 8 hour meeting with CRDSS management and/or CWCB staff, review and finalize <br />changes to be made to the modeled operation for each of the RIPRAP actions/alternatives in <br />2e.1. <br />ModifY the model's input data (m the base model data directories on cando) for the calculated <br />and baseline scenarios to reflect the agreed on changes resulting from subtask 2e.2. It is <br />anticipated that modifications to the statemod program would not be necessary. It is also <br />expected that feature 6 in subtask 2e.l is of lower priority than the other features and will be <br />scoped but not implemented at this time. <br />Prepare a subtask 2e documentation memo that summarizes the change methodology, <br />assumptions and results. The results of operating these features will be summarized through <br />a comparison of historic and simulated flows in the 15 mile critical reach when each of the <br />above features are turned on in the model (one at a time). These graphs will be ofmontWy <br />data for the modeled study period of 1975 through 1991. This subtask is not expected to <br />require recalibration of the model since the historic scenario is not being altered. <br /> <br />2. <br /> <br />(L~0 <br /> <br />----=- f'_ <br /> <br />4. <br /> <br />(<. O/S -/Vi ,). <br />I"'" <br />.. <br />r. <br /> <br /> <br />2e.3 <br /> <br />2e.4 <br /> <br />Deliverables (referencing subtask identifiers): <br />2el A memo (5-6 pages) that describes the current (phase IT) operation of the <br />transmountain diversions for the baseline scenario for the Colorado River Basin and <br />recommendations for improvement of the operation of these structures. <br />2e2&2e3 Modified input data sets for the RIPRAP action features for the calculated and <br />baseline scenarios to reflect the strategy agreed on by CRDSS management. Various <br />simulations would be performed to test the effect of each RIPRAP feature individually <br />