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<br />T-B <br /> <br />Table ot Contents <br />Draft Flow Report <br /> <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br /> <br />o <br />{~ <br />1''' <br /> <br />Figure 4,B. HEC-6 calibration results for Sand Island and Montezuma Creek, , , , , , , , , , , 4 - 25 <br /> <br />cc <br />~ <br /> <br />Figure 4,9, Modeling results with small change in grain size <br />to demonstrate sensitivity. ."""""."""""."""""""", 4 - 26 <br /> <br />Figure 4,10 A comparison, by reach and year, of the average water depth <br />in backwaters of the San Juan River. , , , , , , , , , , , . , , , , , , , , , , . , , , , . , , , , 4 - 35 <br /> <br />Figure 4,11, A comparison by reach of the averages in August 1995. 1996, and 1997 <br />for detritus (above), periphyton (middle) and invertebrates (lower) <br />in the backwaters of the San Juan River, . , , , , , , . , . , , , , , , , , , , , , , , , , , , : 4 - 36 <br /> <br />Figure 4,12, The response of invertebrates biomass estimates <br />during two separate time periods corresponding to a stable period <br />(above) and an unstable periOd (below) in backwaters <br />of the San Juan River, """"""", , . , , . . , , , , , , , , , , , , , , . , , , , , , , 4 - 38 <br /> <br />Figure 4,13, The response of periphyton biomass estimates <br />during two separate time periods corresponding to a stable period <br />(above) and an unstable period (below) in backwaters <br />of the San Juan River. ,."""""", , , , , , . , , , , , , , , , , , , , . , , . , . , . , 4 - 39 <br /> <br />Figure 4,14, Locations of wild Colorado squawfish collections in the San Juan River <br />from 1987 to 1996, , , , , , , , , . , , . , , , , , . . , , , , ' , . , , . , , , , , , . , . , , . , , . , , 4 - 43 <br /> <br />Figure 4,15, Simple verses complex habitat areas mapped <br />from River Mile (RM) 106.9 and 129.9 of the San Juan River. , , . , . , , , , , . , , 4 - 45 <br /> <br />Figure 4,16, Flows during August UDWR YOY sampling trips on the San Juan River. "" 4 - 56 <br /> <br />Figure 4.17, Length-frequency histogram for flannelmouth sucker <br />collected during October USFWS electrofishing surveys <br />on the San Juan River (RM 52 to 158), Age-2 fish in 1995 (1993 cohort) <br />are in the 176 to 250 mm size range, , , , , . , , , . , , , , . , , , ' . , , . , . . , , , , . , . 4 - 58 <br /> <br />Figure 4,18, Average catch rates for juvenile and adult flannel mouth <br />and bluehead sucker collected curing October (1991-97) USFWS <br />electrofishing surveys in the San Juan River between RM 2 and 158. . , , , , , . 4 - 58 <br /> <br />Figure 4.19, Flows during spring and fall USFWS electrofishing trips <br />on the San Juan River, """""""""""""."".".""", 4 - 59 <br /> <br />Figure 4,20, Regression line fitted to plot of average catch rates of flannelmouth sucker <br />collected during October (1991 to 1997) USFWS San Juan River <br />electrofishing surveys versus sampling trip discharge (as measured <br />at USGS gage 09371010, Four Corners, New Mexico), , . , , , , . , , , , , . , , , , , 4 - 59 <br /> <br />SJRIP Biology Committee <br />4 December 1998 <br />