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<br />"~ <br />. <br />, .. <br /> <br />"/ <br /> <br />&,6~:2''2 7 <br /> <br />I2RAEI CRDSS Task Order <br /> <br />Task Order Title: <br />Task Order Number: <br />Consultant: <br />Estimated Duration: <br />Estimated Cost: <br /> <br />Colorado River Water Resource Model Enhancements <br />LR-2 <br />Ross Bethel of Leonard Rice Consulting Engineers <br />Febru - 5 through Ap.a 1"5, 1997 <br />$ 18,400 1\")2..11 <br /> <br />~ <br /> <br />The state desires technical assistance from Leonard Rice to provide engineering services related to <br />CRDSS development. The following two task orders are being executed at the same time. <br />LR-l... Management Issue Support <br />LR-2... Enhancements to Colorado River Water Resources Planning Model. <br />In the event that activities in these task orders compete for the available resources, LR-l activities <br />will take precedence over those activities described in LR-2. As additional task orders are executed <br />those task orders will describe the priority of those activities in relation to activities in other on-going <br />task orders. These additional task orders may include the support of model development on the <br />Gunnison River and the development of scope for a pc-based consumptive use model. <br /> <br />Background <br />(Randy's section is fine here). Add that LR-2 task order has been divided into subtasks to <br />facilitate description. <br /> <br />Subtask LR-2a Reservoir Operations Modifications to Colorado River Calculated Scenario <br /> <br /> <br />Objective. Wmtertime release patterns for the 16 major reservoirs in the Colorado River WRPM <br />in the Baseline scenario do not appear to be consistent with current operating rules <br />of the USBR, Denver and others. The objective of this subtask is to revise the <br />modeled wintertime operation of these reservoirs by implementing changes suggested <br />by the USBR. A~( ~~/('~I Ivl//"", cl!./ ) <br />tt~{ ,cv~./jl ;C.~ S). '/'<.0 . .e",-k <br /> <br />Ae . he fall, winter and springtime rei se operatio~ ~nr~ ~ r~se;;tts in the <br />"Calculated" cenario" for the Colorado Riy Basin in light of recommendations to change <br />at operation made by USBR and Denv r. It is assumed that any recommendations to <br />change reservoir release patterns will be acquired and provided to Mr. Bethel by CWCB staff <br />~_~rior to the initiation of this review.. ;' I'u,.." ~ ~;-v t (MI{f n, ! <br />-- '!a.YGenerate written recommendations of a modeling strategy for releases from the 16 major <br />Colorado River reservoirs. <br />2a.3 In a 4 hour meeting with CRDSS management and/or CWCB staff, review and finalize <br />changes to be made to the modeled operation of each of the 16 major reservoirs. <br />odify the model's input data (in the base model data directories on cando)to reflect the <br />agreed on operating rules. It is anticipated that modifications to the statemod program would <br />n d that changes would only be made to the "Calculated" scenario input data <br />or the model. Rerun the Calculated scenario. V> IPI> >(; ua'/"y d ""'__r>1":>v"., <br />Prepare a subtask 2~ocumentatlo.~me!!!q that summarizes the methodology, assumptions <br />and results. The results of these changes will be summarized at a downstream streamgage <br />through a comparison of the gaged streamflow, Phase II modeled (calculated scenario) <br /> <br />~5fr,t ""A:,.. 0v~' y;, kt:- fJ'7' vl>.~.df ( <br />~ ckJ ~><"'r -r <br /> <br />