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<br />.' <br /> <br />Draft Scenarios and Rationale <br />for <br />Experimental Flow Design in WY 2002-2003. <br /> <br />. <br /> <br />For Consideration by the TWG, February 26-27. <br /> <br />Intended to address the Motion passed at the AMWG Meeting on January 18, 2002 <br />instructing GCMRC, in consultation with the TWG to design experiml;:ntal flows for WY <br />2002 - 2003. The full motion states: <br /> <br />Motion: In concert with RPAflowsfor nativeflsh during 2002-2003 request that the <br />GCMRC, in consultation with the TWG, design an experimentalflow sequence that <br />tests hypotheses for conservation of sediment. Report to AMWG in April 2002 on. the <br />proposedflow sequence. <br /> <br />Introduction. This document was prepared by GCMRC staff and is intended to serve as <br />the basis for discussion between GCMRC and the TWG in anticipation of agreeing on'l!1l <br />experimental flow recommendation for WY 2002 - 2003 that is to be made at the April <br />2002 AMWG meeting. The WY 2002 - 2003 experimental flow recommendation is <br />_ i!l,t~n~e<l to_!1l!:\'tl~o primary P!llPoses~ n _ _ _ _ u _ ,____ _. n _ _u_ <br /> <br />I) improve retention of sediment in the ~RE, and <br />2) benefit native fish populations (primarily HBC). <br /> <br />. <br /> <br />In addition these recommendations consider impacts to other resource areas. The <br />recommendations are consistent with goals of the AMP, especially goals 2 & 8. <br /> <br />[NOTE: A broader set of recommendations for $xperimental flows that should be tried <br />over the next five to ten-years whether the hydro'Iogy is wet or dry is also being <br />developed. The experimental flows being recominended here are consistent with that <br />larger program of flows.] <br /> <br />Specific objectives of the WY 2002 - 2003 experimental flows recommendation <br />include: <br /> <br />A) for sediment . ! <br />. decrease downstream export oft1jbutary input sediment from Marble <br />Canyon . <br />. increase retention of sediment stored in channel through BHBF or HMF's ' <br /> <br />. <br /> <br />Version 1.2 - 2/15/02 <br /> <br />1 <br />