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TABLE 1.-Catches of adult northern pike (Esox Lucius) and walleye <br />(Stizostedion vitreum) per hour of electrofishing (C/h), in the Green River, <br />Utah, April-June 1984-1988 (n=number of fish). Upper Green River= km 337.8- <br />552, lower= km 35-337.7. <br />River Hours Northern aike Walleye <br />location fished n C/h n C/h <br /> 1984 <br />Upper 101.2 20 .20 15 .15 <br />Lower 32.3 0 -- 0 -- <br /> 1985 <br />Upper 886.9 4 .005 8 .O1 <br />Lower 28.9 0 --- 0 -- <br /> 1986 <br />Upper 753.2 5 .O1 17 .02 <br />Lower 35.9 0 -- 0 -- <br /> 1987 <br />Upper 760.1 16 .02 8 .O1 <br />Lower 37.2 1 .03 1 .03 <br /> 1988 <br />Upper 441.5 9 .02 0 -- <br />Lower 43.0 3 .07 1 .02 <br />13 <br />