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<br />Figure 4.31. 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
<br />of the San Juan River, 1997. .............,.,."....,...,..".,..., 4 - 76
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<br />Figure 4.32. Catch-per-unit-effort (CPUE) (number of fish/minute)
<br />for channel catfish (top) and common carp (bottom) by size-class
<br />and year collected during May electrofishing surveys
<br />of the San Juan River, 1991 to 1997. . . . . . . . , . . . . . . . . . , . , . , . . , , . . . ' . ' 4 - 77
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<br />Figure 4.33. Catch rates (number/100m') for young-of-the-year (YOY)
<br />channel catfish and common carp collected in main channel habitats (top)
<br />in autumn and secondary channel habitats in August (bottom)
<br />during seining surveys of the San Juan River, 1991 to 1996. . , . . . . . . . , . . . , 4 - 78
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<br />SJRIP Biology Committee
<br />February 1999
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<br />Table of Contents
<br />Flow Report
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<br />Figure 4.34. Flow (as measured at Four Corners gage 09371010)
<br />vs. average condition (K = 1 OOw/l3) for adult channel catfish (top)
<br />and adult common carp (bottom) collected during May and October
<br />e\ectrDlishing surveys of Ihe San Juan River, 19911D 1997. """".,.." 4 - 80
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<br />Figure 4.35. Density of red shiner in the San Juan River (5-mile increments),
<br />1992 to 1997, New Mexico, Colorado, and Utah. . . . . . . . . . . . . . . . . . . . , . . . 4 - 84
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<br />Figure 5.1. Selenium (Se) concentration in macroinvertebrates vs. distance downstream
<br />in the San Juan River. ...,........,.......................,....,:. 5 - 3
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<br />Figure 6.1. The relationship between habitat needs and flow for the native fishes
<br />of the San Juan River. .........., . . . . . . . . . . . . . . . . . . , . . . , . . . , , . . . . . 6 - 5
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<br />Figure 7.1. Flow(habitat relationships for four low-velocity habitats used
<br />by rare fishes in the San Juan River, ....,..........................,. 7 - 4
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<br />Figure 7.2. Flow/backwater habitat area relationships for Reach 3. . . . . . . . . , . . . , . . . . . , 7 - 5
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<br />Figure 7.3, FIDw/backwater habitat model for Reaches 1 to 4 and 1 to 5 based
<br />on flushed and nonflushed conditions. , . . . . , . . . . , . . . . . . . . . . . . , . . . . . , . . 7 - 6
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<br />Figure 7.4, Schematic of the San Juan River Basin as modeled, excluding gains
<br />and losses associated with the Animas-La Plata Project (ALP)
<br />without modeled details of the tributaries. ............................ 7 - 15
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<br />Figure 7,5. The San Juan RiverWare Model as it appears on the computer screen
<br />showing the mainstem reach from Navajo Dam downstream towards
<br />Farmington, New Mexico. ........."...,.........,......,.,...... 7 - 16
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<br />Figure 8.1, Flow chart Df Navajo Dam operating rules for a 5,000-cfs peak release. ...... 8 - 8
<br />Figure 8.2. Flow chart of Navajo Dam operating rules for a 6,000-cfs peak release, ,., ' . . 8 - 9
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