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<br />0227 <br /> <br />1.4 <br /> <br />Z 2 <br />o 1. <br />;:: <br />~ <br />~ffi <br />~c 1.0 <br />z~ <br />Oa: <br />O~ <br />"w <br />~~ O.B <br />6ffi <br />'"0 <br />::;a: <br />00 <br />~~ 0.6 <br />a~ <br />z <br />S <br />" <br />~ 0.4 <br /> <br />0.2 <br /> <br />60 -,- <br /> <br />z <br />o <br />;:: <br />~ 50 <br />>- <br />z <br />'" <br />o <br />za: <br />8~ 401- <br />,,~ <br /><a: <br />'"'" <br />~a. <br />"'"" <br />Uaol- <br /> <br />~8 <br />85 <br />~~ 201- <br />~~ <br />< <br />~ <br />:'l 10 I- <br />o <br />w <br />,. <br /> <br />Nole: Overlying data points have been shifted by no more than <br />0.02 j.lg/L so Ihat Ihe seasonal downstream trends can be identified. <br /> <br />^ <br /> <br /> <br />^ <br />/ " <br />/ :. " <br />/ .. " <br />/ " <br />/ <br /> <br />-.... <br /> <br />- <br /> <br />, <br />, <br />, <br />, <br />, <br /> <br />",- <br /> <br />_...-~-_-o;...::......_--=--=-._-~......:...:....:-:..:..... <br /> <br />--.--_...-_.-. <br />. . . <br /> <br />,,~*,0 <br /> <br />~#' .,. -<,<? ,<1< ..i*,'l. ~~. ~<f>.,f> <br /> 6''b-~ ~. ~~~ ~~~ ~. <br /> 'Qu. <br />T -,- -,- , , <br /> ^ <br /> / \ <br /> / \ <br /> I \ <br /> I \ <br /> I \ <br /> \ <br /> I '- - - -- <br /> ,/ -... <br /> -... <br /> ./ ...... <br /> ./ <br />,. - ./ <br />/ - -~ - <br />/ <br /> <br />o <br /> <br />/~.~~'.'~-:-~ <br />/-:,._'~ -~ <br />.- .. ~ I , -.- '""- ':. <br /> <br />-. <br /> <br />..................--.... <br /> <br />...... <br /> <br />-'- <br /> <br />-;- <br /> <br />_.- <br /> <br />~~0 <br />".. <br /> <br />~.'" <br />~o <br /> <br />~#' <br /> <br />4.'t}.'b <br />~ <br />'Qu. <br /> <br />.,. <br />0\'iJ.(\' <br /> <br />,o~ <br />",,'$' <br /> <br />.'&,6 <br />~'f>'" <br />... . <br /> <br />~~. <br />~. <br /> <br />EXPLANATION <br />EARL V-SNOWMELT RUNOFF (Ap"l) POST-SNOWMELT RUNOFF (J"Iy-B.pl.mbo~ <br />SNOWMELT RUNOFF (May-June) LOW FLOW (October-March) <br /> <br />Figure 11. Median dissolved- and total-recoverabie lead concentrations by streamflow regime in the upper <br />Arkansas River, April 199O-March 1993. <br /> <br />WATER QUALITY 27 <br />