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<br />---- --'J __ <br /> <br />"'~-'-",,,,!",,~- -.=:;-, <br /> <br />Physical, Chemical, and Biological Data for <br />Detailed Study of Irrigation Drainage in the <br />Uncompahgre Project Area and in the Grand <br />Valley, West-Central Colorado, 1991-92 <br /> <br /> <br />by David L. Butler and Winfield G. Wright, U.S. Geological C>..~u_.. <br />Dorothy A. Hahn, Richard P. Krueger, and ,~;" 1 <br />Barbara Campbell Osmundson, U.S. Fish and Wildlife Se. .l:;~r <br /> F I '.~ <br /> I <br /> l <br />U.S. GEOLOGICAL SURVEY E <br /> <br />Open-File Report 94-11 0 <br /> <br />u.s. GEOLOGICAL SURVEY <br />U.S. FISH AND WilDLIFE SERVICE <br />BUREAU OF RECLAMATION <br />BUREAU OF INDIAN AFFAIRS <br /> <br />Denver, Colorado <br />1994 <br /> <br />