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<br />Table ot Contents
<br />Draft Flow Report
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<br />Figure 4,B. HEC-6 calibration results for Sand Island and Montezuma Creek, , , , , , , , , , , 4 - 25
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<br />Figure 4,9, Modeling results with small change in grain size
<br />to demonstrate sensitivity. ."""""."""""."""""""", 4 - 26
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<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
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<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
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<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
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<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
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<br />Figure 4,14, Locations of wild Colorado squawfish collections in the San Juan River
<br />from 1987 to 1996, , , , , , , , , . , , . , , , , , . . , , , , ' , . , , . , , , , , , . , . , , . , , . , , 4 - 43
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<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
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<br />Figure 4,16, Flows during August UDWR YOY sampling trips on the San Juan River. "" 4 - 56
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<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
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<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
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<br />Figure 4.19, Flows during spring and fall USFWS electrofishing trips
<br />on the San Juan River, """""""""""""."".".""", 4 - 59
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<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
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<br />SJRIP Biology Committee
<br />4 December 1998
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