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<br />, <br />, <br /> <br />,ry <br />t? <br />v <br />~ <br />o <br /> <br />It <br />" <br />'IJ <br />\\ <br />\;; <br /> <br />. <br /> <br />. <br /> <br />GVWM Flow Protection Plan <br /> <br />December 19, 1994 <br />4:02pm <br /> <br />DRAFr <br /> <br />have legal and political connotations which make them non-desirable to use, The unmanageable <br />name for this water is, "those waters which are made available for use through canal system <br />improvement and altered operation." At the risk of creating a legal precedence, for no more <br />than convenience, the water made available due to the canal improvements and associated water <br />management changes will be referred to as "conserved" water in this repon. <br /> <br />Placing a call: callinl! the river - a situation in which a senior water right is receiving <br />insufficient flow in a river; that senior water right makes a request to the Division Engineer to <br />-Jtet> diversions by d upstream junior water rights which may be diminishing supply""",-I-,l +'L,. i <br />CU.v40..1\O'--:='+"r c.........lftYla- )"-\ri....t 15sc&'~1-ee. <br /> <br />Natural Flow, This term seems to have more than one meaning. For the purpose of this <br />report it will mean the portion of flow at the Cameo gage with river administration that would <br />be there without releases from GMR and lor contract releases such a releases from Ruedi <br />Reservoir. Without GMR upstream junior water users would be cunailed. Consequently, the <br />GMR replacement releases for those upstream junior diverters are really part of what would have <br />been natural flow. Upstream replacement releases and mayor may not considered part of <br />natural flow. '1.'-';:"; II--<.~n d..p I e. ~ eLl, ~''''-'''' e if~ l~-\"",-j -+:/0-<0 c,.- t~ f I.~ <br />. f1..JJ- r~ver +J......c....f L.c...>ou...td Wa....u.~ -~.st-~d o...bS~~ +~ <br />~c..+'J;i;.Q-S' 0 I' h-?................., <br />Direct releases - A portion of flow at the Cameo gage that is not part of natural flow are <br />the direct releases. For example, if, after allef the Uf!tream j-'m~r! water rights junior to the <br />GVIC 120 cfs right have been called out and replacement releases are being made for those <br />junior rights, and the Cameo gage flows are still not sufficient, then direct releases are made - <br />from GMR to the 120 cfs right. All of the irrigation water rights diverted in the Grand Valley <br />are GMR Historic Users Pool (HUP) beneficiaries and are entitled to direct releases when he..d",), <br />-i"~~c:I. <br /> <br />'1' Consumptive Use of Water - Water which is permanently removed from the river basin 'd,,~-\-\A.... <br />CAJ",~'6('\ I"#by evaporation, plant transpiration, or out-of-basin diversion. An in-basin irrigation water right <br />owner may diven 40 cfs but only a portion of that amount is permanently removed. In contrast, <br />an out-of-basin diversion is 100 percent consumptive to the basin of origin. <br /> <br />Back!!TOund <br />The Government Highline canal system is part of the Grand Valley Project (GVP). The other <br />main portion of the project is the Orchard Mesa irrigation system. The Government Highline <br />canal system, which includes the GVP diversion dam, is operated and maintained by the Grand <br />Valley Water Users Association (GVWUA). The study area will be limited to the Government <br />Highline canal system, Automation could also help with water management in other canal <br />systems in the Grand Valley, however, since a major ponion of the GVWUA canal system has <br /> <br />2 <br />