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<br />. <br /> <br />. <br /> <br />. <br /> <br />..... <br />.... <br /><X <br /> <br />QUALrry OF 'NATER <br /> <br />::..., <br /> <br />COLORADO RIVER BA.SI N <br /> <br />PROGRESS REPORT NO. 11 <br /> <br />JANUARY 1983 <br /> <br />..- -.-~ <br />:t~rl,."W'- r <br />,,1;J'_, - - --..."'(- <br />-~;'~ -""'~ ". ': <br />-Q."':;-::'-"'--= .........-::~--.;,":"z.\ <br />;s...,' - - '....' <br />io;' ~ "-~~ i~, <br />f - -"~J :>- :: <br />,U1. .;-~- 10 <br />'?',: - :Co' <br />.\:.. . <br />1.,. .:~- -!l;l <br />.q:;;c~--4~:> <br />H 3," <br /> <br />UNITED STATES <br />DEPARTMENT OF THE INTERIOR <br />James G. Watt, Secretary <br />