<br />8000
<br />
<br />7000
<br />
<br />6000
<br />
<br />5000
<br />
<br />'"
<br />-< 4000
<br />:<:
<br />
<br />Upper Basin vs. Lower Basin C.U.
<br />
<br />
<br />
<br />
<br />
<br />....:i..,;;;..'d,;.."_;"".~...,;..._."":_......_:;w ~;;.~.... ......,.,..
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<br />;..,w........w...'........'
<br />...:-..~ -......:,...,""'......-...p.,...,.......,,"
<br />
<br />
<br />3000 ......,. _"' ....-'....._... --_.__".,-,,-,:,,_.,., .,..:..;;; :c.b4}i<ii;,;..-):",;;,
<br />
<br />...,',..-.- ..;........;.;. ,- _.,;.., ...;,.'",,' -::....<_:-..;;.:.;.;."".'~ ...
<br />
<br />2000 ,_ _ _ _ _ _ __" __., """ _ 'u _ u _ _ _ ,'_ _ _ _,,"", _ _ ,_ _ '." _, _ __" _ u__ _ _ u_ _, _ - _ _ _ _ _ _ - -- - - -_""_"" -- - -_-,-
<br />
<br />1000
<br />
<br />.....-....,. .....:- .,.'...- "._-.- -.- -..-._','-'''' -,'.,. -...
<br />.. .. .....
<br />
<br />'''';'';''' -',';"'_ -'.._'.. _',_ ........; .. .....,... _.,.,......>....:..,..:_ _.c.. '_.:_ _ .,c ...._ .....,. ... _:_ ""... ,..',.. .,. _:._'.,.'.,. :........... ... ;;,..._:.... _ ,;..... ... _:._:....;;.. ...
<br />.. ........ .... ... .... .,' ...... ....
<br />
<br />0
<br />l'- '" M or> l'- '" M or> l'- '" M or> l'- '" M or> l'- '" M or> l'- '"
<br />'" '" 0 0 0 0 0 N N N N N M M M M M .". .". .". .". .".
<br />'" '" 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
<br /> N N N N N N N N N N N N N N N N N N N N N N N N N
<br /> Year
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