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I I I I I I I I I I I I I I I I I I I n..,.. -"':.~~ --' - " increased'in the 1964-1981 period as compared with the 1941-1~6~ period. ~hile the Roberts Tunnel and the South Park Transfers only began to make their presence felt in the 1964-l98l period, the Moffat Tunnel diversions also show an appreciable increase i' , the latter period. The "Metro Contributions' clearly show a marked increase for the 1964-l981 period (llS,400 acre-feet annually) ,as against the 1941-1963 period (40,800 acre-feet annually). Also to be noted is the almost doubling of the import tations u~der the Grand River Ditch, the Eureka Ditch, and the Alva B. A(/ams Tunnel from 137,800 acre-feet per year in the 1941-1963!period to 247,000 acre-feet per year in the 1964-l9&1 period. The total water introduced into the South platte RiveI Basin mor. than doubled from 178,600 acre-feet per year from 1941-1963to 362,400 acre-feet per year in 1964-1981. Have 'these importations and introductions of water changed the call patterns so noticeably? The author believes so, not so~ much as to the singular effect of the Roberts Tunnel, but as to the more ~eneral effect of the general increase in all of the importations and introductions of water into the South Platte River Basin. As noted previously, Figure 6 evidences a most noticeable increase in the so-called "Metro Contributions." The rationale for creation of the species, "Metro Contributions," lay in the desire to focus more selectively on calls from District 2, which, on the wh~le, is located immediately downstream from the Metropo1i~an Denver area. It is in District 2 that some of the larger calling rights lie which would exert their presence upon the upstream, metropolitan water users in Water District 8. -14- "-,,;,, .~ ~_'^ ,,,;;, '. 01 :,"'1 '" ,-"! ,',.,' "