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<br />'i~: . '\~ 0008~3 <br /> <br />October 15, 1996 <br /> <br />Page 2 <br /> <br />right in the Phase 2 model control junior rights in the upstream instream flow reach anyway, <br />Another way of thinking of it is the upstream reach has too high a summer demand in the model, and <br />the downstream reach has too Iowa winter demand in the model. <br /> <br />Little Snake River <br /> <br />The Little Snake River flows more or less parallel to the Wyoming/Colorado State line, leaving and <br />re-entering Colorado twice before turning south to the Yampa mainstem, In this area, there are <br />irrigated lands in Wyoming which are served by Colorado rights and vice versa, Kent Holt is <br />working on summarizing operations along the State line, but that information is not available at this <br />point. The State may want to address several issues related to this area, some of which might be <br />better undertaken when the Commissioner has completed his project: <br /> <br />· Many large parcels in this area were not modeled explicitly in the Phase 2 model. Some of them <br />are on tributaries to the Little Snake or in the headwaters section, well within the State, It is <br />assumed that they are served by Colorado rights, The parcels are large enough that one would <br />expect the associated water rights to be above the Phase 2 cutoff, but this has not peen verified, <br /> <br />· At the State's direction, lands that are identified as Phase 3 irrigated lands in the spatial database, <br />but which lie in Wyoming, have been excluded from the Phase 3 model. However, some parcels <br />lying wholly in Wyoming were included in the Phase 2 model. <br /> <br />· For the purpose of the Phase 3 model, Phase 3 lands within Colorado but close to the State line <br />will be aggregated and served by whatever Colorado water rights are associated with those lands, <br />We anticipate that the lands may be shorted in the model, because some of the lands are served <br />by Wyoming rights, If this occurs, we will need to make adjustments at calibration, In the long <br />term, the State may want to treat the whole border area in a more detailed way, The degree of <br />resolution in this area should be coordinated with the degree of resolution in the estimate of <br />consumptive use represented at the "Wyoming Demand" node, <br /> <br />copies to: Ray Bennett <br />Ray Alvarado <br /> <br />DN-CJ2-101-01/mf <br />