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<br /> <br />I <br />I <br />I <br />I <br />I <br /> <br />.n '"',~. "'. ~ ') <br />\_' ,:.' j...4 <br /> <br />1981. Tab~e 4 also includes diversions of water under the so- <br /> <br /> <br />called .South Park Transfers. by the City of Aurora and by the <br /> <br /> <br />Denver Water Board. The .South Park Transfers. column includes <br /> <br /> <br />those waters leased by the City of Thornton to the City of Aurora <br /> <br /> <br />which were diverted under the former's South Park water rights. <br /> <br /> <br />Figure 4 shows the location of the points where these waters <br /> <br /> <br />are introduced into the South Platte River Basin. One may notice <br /> <br /> <br />from Table 4 that certain transmountain diversions have occurred <br /> <br /> <br />throughout the 1941-l981 period, while others, such as the <br /> <br /> <br />Roberts Tu~nel, have begun to contribute water to the South <br /> <br /> <br />platte Riv~r Basin at various times within the 1941-l98l period. <br /> <br /> <br />Table 4 and Figure 4 include the .South Park Transfers., <br /> <br /> <br />because the effect, if any, of diversions and use under these <br /> <br /> <br />transfers upon call patterns would be much the same as that to b~ <br /> <br /> <br />expected from importations of transmountain waters. For example, <br /> <br /> <br />the histor~c effect of the exercise of a South park water right <br /> <br /> <br />might have been to deplete the stream system by 500 acre-feet per <br /> <br /> <br />year. On ~he average, the municipal owner of the same South Par~ <br /> <br /> <br />water righ~, upon transfer of the right, would be expected to <br /> <br /> <br />obtain a gross yield of 500 acre-feet annually from the exercise <br /> <br /> <br />of the right. However, unless the municipal owner actually used <br /> <br /> <br />the 500 acre-feet to extinction, as most of the transfers allow, <br /> <br /> <br />there woul'd be some return flow to the stream system from the <br /> <br /> <br />expected o~e-time use of the 500 acre-feet. Thus, with the exer~ <br /> <br /> <br />cise of the transfer, there might return to the stream system <br /> <br /> <br />some 200 or 300 acre-feet of the 500 acre-feet taken into the <br /> <br /> <br />municipal system, whereas historically the 500 acre-feet per year <br /> <br /> <br />represented a total depletion of 500 acre-feet to the stream <br /> <br /> <br />-10- <br /> <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br /> <br />L <br /> <br />-----'--"--_~."_____ .C <br /> <br />, '--~.'" -~.." -- <br /> <br /> <br />1-; <br /> <br /> <br /> <br /> <br />1" <br /> <br /> <br />'\-'i <br />" <br /> <br />i-; <br />