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<br />Table 5. <br /> <br />Average surface ice thickness, free water depth, water temperature, and dissolved <br />oxygen (D.O.) for 14 backwaters sampled during Trip I (January 31 - February 4, <br />1994) and Trip II (February 21 - 24, 1994) of winter, 1993-94. CH = chute channel, <br />SC = scour channel, ER = eddy return channel. <br /> <br />Site # <br />(River <br />Kilometer) <br /> <br />Average <br />Surface I Ice <br />Thickness (cm) <br /> <br />Trip I Trip II <br /> <br />Reach 1 <br /> <br />I - CH (534.2) <br />2 - CH (530.5) <br />3 - SC (528.6) <br />4 - CH (526.6) <br />Reach 2 <br /> <br />15 <br /> <br />18 <br /> <br />5 - ER (508.8) <br />6 - CH (506.4) <br />7 - SC (506.4) <br />8 - CH (479.8) <br />9 - CH (478.2) <br />Reach 3 <br /> <br />6 <br />2 <br />3 <br />30 <br />27 <br /> <br />o <br />21 <br />43 <br /> <br />Average Free <br />Water Depth <br />(cm) <br /> <br />Trip I Trip II <br /> <br />30 <br /> <br />30 <br /> <br />9 <br /> <br />40 <br />58 <br />27 <br />40 <br />58 <br /> <br />10- CH (475.5) <br />11- CH (471.4) 18 9 52 <br />12- SC (470.6) 9 21 <br />13- CH (415.6) 15 0 46 <br />14- CH (411.6) 0 <br />I Includes both solid surface ice and frazil ice. <br /> <br />37 <br />49 <br />34 <br /> <br />55 <br /> <br />30 <br />88 <br /> <br />18 <br /> <br />Average <br />Temperature <br />(OC) <br /> <br />Trip I Trip II <br /> <br />0.09 <br /> <br />0.06 <br /> <br />24 <br /> <br />0.84 <br />0.92 <br />2.03 <br />0.18 <br />0.10 <br /> <br />1.09 <br />0.29 <br /> <br />0.91 <br /> <br />0.88 <br />0.45 <br />0.46 <br /> <br />2.91 <br /> <br />3.22 <br />3.66 <br /> <br />Average D.O. <br />(mg/L) <br /> <br />Trip I Trip II <br /> <br />11.7 <br /> <br />11.7 <br /> <br />12.4 <br />12.2 <br />13.6 <br />11.8 <br />10.5 <br /> <br />11.1 <br />12.5 <br /> <br />12.2 <br /> <br />12.2 <br />10.9 <br />6.0 <br /> <br />9.6 <br /> <br />11.0 <br />10.8 <br />