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<br />.. <br /> <br />t~I~1.&J <br /> <br />!-:~::{t~:~&\. <br />l{~~:;;~~~O <br /> <br />~:"i'c'i)>3 <br />Uv,... \I ,j <br /> <br />USBR Upper Colorado Region Colorado River Simulation System (CRSS) hydrology <br /> <br />data base. Virgin flows for this station included adjustments made for <br /> <br />... <br /> <br />irrigation consumptive use, reservoir change in storage (Taylor Park, Blue <br /> <br />Mesa, Morrow Point, and Silver Jack), reservoir evaporation (Blue Mesa, and <br /> <br />Morrow Point), reservoir bank storage (Blue Mesa), and transbasin diversions <br /> <br />(Tarbell, Tabor, and Larkspur Ditches). <br /> <br />Original CRSS virgin flows for the Gunnison River at Crystal Dam were <br /> <br />modified to reflect changes made in irrigation consumptive use depletion <br /> <br />values. Changes were made to reflect a constant irrigated acreage for the <br /> <br />study period. The monthly distribution of irrigation depletions was also <br /> <br />modified to more closely represent depletion timing under virgin flow <br /> <br />conditions. A detailed discussion of irrigation consumptive use depletions is <br /> <br />given in Appendix B. <br /> <br />Discussion of virgin flow development methodologies for <br />.", <br />.- <br /> <br />the Gunnison River at Crystal Dam and the other core stations is given in <br /> <br />Appendix C. <br /> <br />4 <br />