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Changes in May streamflow at the state line are illustratative of the effects of native <br />South Platte water development when junior rights to store these flows are most likely to <br />come into priority. Under Program Alternative #2, Tamarack I and III do not divert large <br />volumes of flow in May, and thus flows crossing the state line remain substantially <br />unchanged relative to Present Conditions. When the effects of peak flow development in <br />Colorado are included under Program Alternatives #2A and #2B, the result is substantial <br />flow reduction in higher-flow years. The volume of these reductions is made up in <br />lower-flow years (by Tamarack II or other activities), but the 48-year distribution of <br />flows is considerably altered, reflecting a"flattening" of the hydrograph. <br />May streamflow, South Platte at Julesburg <br />700 <br />600 <br />U. <br />? 500 <br />3 r; <br />° 400 <br />E <br />m <br />? 300 VA, <br />N <br />p 200 <br />H <br />100 <br />0 <br />0 4 8 12 16 20 24 28 32 36 40 44 48 <br />Ranked Years <br />- - - PC PA #2 PA #2A PA #2B <br />Note that the y-axis scale of this graph (700,000 acre feet) is much greater than that of the .lanuary graph. <br />3