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<br />~ <br />., <br />';' <br />.. <br /> <br />"} <br /> <br />Figure 4,21. San Juan River discharge (as measured at USGS gage 09371010, <br />Four Corners, New Mexico) versus average juvenile flannelmouth sucker <br />condition, Condition factor was determined using data collected <br />by USFWS electrofishing surveys (RM 52 to 158) <br />within designated reaches, . , . . . . . . . . . . . . . . . . . . , . . . . . . . . . . , , . , . . . . . 4 - 61 <br /> <br />Figure 4,22, San Juan River discharge (as measured at USGS gage 09371010, <br />Four Corners, New Mexico) versus average adult ilannelmouth sucker <br />condition. Condition factor was determined using data collected <br />by USFWS electrofishing surveys (RM 52 to 158) <br />within designated reaches. . . . . . . . . . . . . . , . . . . . . . . . . . . . . . . . . . . , . . . . , 4 - 61 <br /> <br />Figure 4,23. Length-frequency histogram for blue head sucker collected <br />during October USFWS electrofishing surveys on the San Juan River <br />(RM 52 to 158). ..................,.......................,..... 4 - 65 <br /> <br />Figure 4.24. Regression line fitted to plot of average catch rates of bluehead sucker <br />collected during October (1991 to 1997) USFWS electrofishing surveys <br />on the San Juan River versus sampling trip discharge (as measured <br />at USGS gage 09371010, Four Corners, New Mexico). . . . .. . . . . . . . . . . . . , 4 - 65 <br /> <br />Figure 4.25. Average catch rates (:I;: standard deviation) of bluehead sucker <br />during October USFWS electrofishing surveys on the San Juan River <br />(RM 159 to 180). ...............,............................... 4 - 66 <br /> <br />Figure 4.26. San Juan River discharge (as measured at USGS gage 09371010, <br />Four Corners, New Mexico) versus average juvenile blue head sucker <br />condition. Condition factor was determined using data collected <br />by USFWS electrofishing surveys (RM 52 to 158) <br />within designated reaches. . . . . , . . . . . . . . . . . . . . . . , . . . . . . . . . . . . . . . , . . 4 - 68 <br /> <br />Figure 4.27. San Juan River discharge (as measured at USGS gage 09371010, <br />Four Corners, New Mexico) versus average adult bluehead sucker <br />condition. Condition factor was determined using data collected <br />by USFWS ehilctrofishing surveys (RM 52 to 158) <br />within designated reaches. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 - 68 <br />Figure'4.28. Density of speckled dace in San Juan River secondary channels <br />(5-mile increments), 1992 to 1997, New Mexico, Colorado, and Utah. . . . . . . . 4 - 71 <br /> <br />Figure 4.29. Relative abundance of nonnative fishes (top) and catch-per-unit-effort <br />(CPUE) (number of fish/minute) for channel catfish and common carp <br />(bottom) collected during May and October electroiishing surveys <br />of the San Juan River, 1991 to 1997. . . , . . . . . . . . . . , . . . . . . . . . . . . . . . . . , 4 - 73 <br /> <br />" <br />" <br />I, <br />I~ <br /> <br />SJRIP Biology Committee <br />February 1999 <br /> <br />T-9 <br /> <br />Table of Contents <br />Flow Report <br /> <br />i': <br />, <br />I" <br /> <br />I'.' <br />:i <br />,I, <br />I' <br />I <br />~ : <br />,\1 <br />:1,\ <br />II <br />j <br /> <br />Figure 4.30. Catch-per-unit-effort (CPUE) (number of fish/minute) for channel catfish <br />(top) and common carp (bottom) by size-class and year collected <br />during May and October electrofishing surveys of the San Juan River, <br /> <br />1991 to 1997. . . . . . . , , . . . . . . . . , . , . . . . . . . . . , . . . . . , . . . . . . . . . , . . . . . 4 - 75 <br />