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5 <br />CHAPTER II <br />METHODS AND EQUIPMENT <br />Standard fishery techniques and equipment were used. Names of all <br />fishes are from Special Publication No. 2, American Fisheries Society, <br />(1960). <br />Field collections were divided into two major types of data: phys- <br />ical and biological. These data were collected throughout the summer <br />and fall of 1965 and again for two weeks during the summer of 1966. <br />Twenty-one trips (totaling more than 900 man-hours) were made into the <br />Monument Canyon during this time. <br />PHYSICAL DATA <br />These data consist of water temperature, water volume, gradient, ha- <br />bitat types, and water chemistry. <br />Water temperature was recorded over a 27 month period by a contin- <br />uous recording thermograph located near the upstream boundary of the <br />Monument. Maximum and minimum water temperatures occurred at 12 hour <br />intervals. These temperatures were interpolated to the nearest degree <br />Fahrenheit and averaged for a'seven day period. <br />Water volume was obtained from records of the U.S. Geological Sur- <br />vey gaging station near the upstream boundary. Flow records from October, <br />0 <br />1903, to September, 1964, have been published (Geological Survey, 1954, <br />1964a, and 1961, 1962, 1963, 1964b, and 1965). Uncorrected-and unpub- <br />lished data for the 1965 and 1966 water years were obtained from the <br />Geological Survey office at Grand Junction, Colorado. Gradient was de- <br />termined by interpolating contour lines from the Grizzly Ridge and Red <br />Rock Canyon quadrangle topographic maps.