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<br />Ta bl e 4 <br />Difference file derivation <br />(Gunnison River above Gunnison River near Gunnison)l/ <br />Station Filename <br />Gunnison River near V1l4500 [Base] <br />Gunnison <br /> <br />Ohio Creek near <br />Gunnison <br /> <br />- VGl4000 <br /> <br />East River at <br />Almont <br /> <br />- VG12500 <br /> <br />Taylor River at <br />Almont <br />1/ - c minus <br /> <br />- VCI0000 <br /> <br />The difference file resulting from subtraction of these files is <br /> <br />presented in Table 5, it shows an average annual difference of -20,800 <br /> <br />acre-feet, Fifty-seven percent (219) of the monthly values in Table 5 are <br /> <br />negative, More than 25 percent (97) of these values diverge by more than 10 <br /> <br />percent of the Gunnison River near Gunnison flows, <br /> <br />;. <br />~ <br />.~. <br /> <br />Virgin flow estimates for the Gunnison River near Gunnison (VII4500) were <br /> <br />derived by adding estimated irrigation consumptive use depletions to gaged <br /> <br />historic flows at this site. Flows were further adjusted for Taylor Reservoir <br /> <br />changes in storage, Flows for the East River at Almont (VGI2500) were <br /> <br />developed by adjusting historic gaged flows at the site for irrigation <br /> <br />consumptive use depletions. ViI1!in flow estimates for the Taylor River at <br /> <br />Almont (VCI0000) were derived by adjusting historic gaged flows at this site <br /> <br />for changes in storage in Taylor Park Reservoir, (Irrigation depletion above <br /> <br />this site was considered negligible,) <br /> <br />Flow estimates of Ohio Creek near Gunnison (VGI4000) were derived by <br /> <br />correlation with East River at Almont flows, (Historic flows for Ohio Creek <br /> <br />near Gunnison are available for water years 1945-1950.) More detailed <br /> <br />discussion of virgin flow derivation at these stations is given in Appendix C, <br /> <br />11 <br /> <br />. <br /> <br />e <br /> <br />. <br />