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<br /> <br /> DISTANCE FROM MOUTH. IN,KILDMETERS <br /> 310 300 DO 280 270 260 250 <br /> I:::) <br /> 400 = <br /> ., <br /> '" YM-4 YM-l1 SITE NUMBER N <br /> w <br /> .... CJ1 <br /> :i <br /> :i I MAXIMUM OflSERVED '-1 <br /> .... 350 CONCENTRATION .-.. <br /> ~ <br /> 0 <br /> 0 AVERAGE OBSERVED <br /> ~ <br /> '" CONCENTRATION <br /> w <br /> "- 300 <br /> ., YM-6 MINIMUM OflSERVEo <br /> w <br /> z + CONCENTRATION <br /> 0 <br /> .... <br /> 0 + ONE SAII/I'LE OR NO <br /> u 250 VARIATION <br /> ~ <br /> .z COMPUTED IIY PIONEER-I <br /> 0 Mooa <br /> ;::: <br /> <( 200 <br /> '" ---- COMPUTED IIY <br /> .... <br />w Z U.S. GEOLOGICAL <br /><So w SU IiVEY MODEL YM-12 <br />u <br /> z + <br /> 0 <br /> u 150 YM-3 YM-9 <br /> <( '+ + <br /> ii: <br /> w YM-10 <br /> .... <br /> t> + <br /> :1i 100 <br /> :E YM-14 <br /> '" + <br /> 0 YM-8 <br /> ... ------ <br /> :i YM-D1 <br /> 0 50 + -------- <br /> u <br /> .!. --- <br /> <( YM-11 ----YM:.-'j <br /> u + <br /> w <br /> ... + <br /> 0 <br /> 196 190 IB5 190 175 170 185 180 166 <br /> DISTANCE FROM MOUTH. IN MILES <br /> Figure 21.-Computed versus observed concentrations of fecal-coliform bacteria in the Yampa River, <br /> September 23-24, 1975 (U .S. Geological Survey and Pioneer-I models). <br />