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<br />requirement 1a eatimated to be 60 percent tor the purpose of the <br />preaent atucSy. <br />It ia recognized that re~ealJ ot the _gn1 tude ot the <br />d1vera10lUl there is a certain base return now resulting t'rom the <br />ground vater regulation. III other '110M., even though the diversiona <br />were greatl.1 short of a tull .upply, there would be a certa1n basel <br />retura flow. Thia base flow coacept c&D be supported by actual <br />hiatorical recorda from recent teaI'll when stream discharge recordn <br />are available to compute riTeI' gains to the l\lrg& toire Rl vel' <br />between Tr1n1da4 and Alfalfa streaa gaging stat10ns. Evenvhen <br />the 41".1'810118 are at & Jld.n1auIl there 1s a river ga1n unaccountable <br />from lIe&lUr.d 1ntlow. There are not suf't1cient recorda to determ:Lne <br />the JI&gUi tude of this base return flow. For use 1n the present <br />study the relat10nship shown OIl exhibit 3 as curve "b" va. 1.1.e4 <br />.a a total to eati..Dl&te the total return flow when there .. a <br />diveraion ahortage. '!be top point w.a plotted traI the c~t.ecl <br />return flow ot 38 percent tor a 100 percent supply ot ideal <br />requ1naenta. 1m other point vaa plot:ted trom actual h1storical <br />record for 1955. In 1955 the 4i version supply vaa 64 percent ot <br />1deal requirements and the caaputed return floy was 32 percent <br />ot the diveraions. Thia i8 .the only year 1n which atr... 41acharge <br />recorda are available that gi v.a reaaonable reaul ta. It va. aaau..d <br />the return flow percentage would vary .. & straight line through <br />the two pointa explained abOft. <br /> <br />(.. l' <br />