WSP12173

• File Number: 8240.300.02
• Description: San Juan River Recovery Implementation Program - Recovery Plans & Information
• Basin: San Juan/Dolores
• Water Division: 7
• Date: 2/1/2000
• Title: Drift of Fishes in the San Juan River - 1991-1997
• Water Supply Pro - Doc Type: Report/Study

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Platania, Dudley, and Maruca. 2000. Drift of Fishes in the San Juan River 1991-1997.

FINAL

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Figure II.

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LIST OF FIGURES

Study area in the San Juan River.................................................................................. 4

Number of drifting larvae collected at Four Comers and Mexican Hal and the
toial collected at both sites from 1991-1997..............................................................16

Number of drifting larvae collecIed at both sampling localities from 1991-1997.....17

Number of drifting larvae collecIed aI Four Comers from 1991-1997 ...................... 19

Number of drifting larvae collecIed at Mexican Hat from 1991-1997...................... 20

Mean annual and maximum daily CPUE for red shiner on the San Juan River
aI Four Corners and Mexican Hal.............................................................................. 21

Mean annual and maximum daily CPUE for fathead minnow on the San Juan
River at Four Corners and Mexican Hat ....................................................................22

Mean annual and maximum daily CPUE for speckled dace on the San Juan
River at Four Corners and Mexican Hat .................................................................... 23

Mean annual and maximum daily CPUE for !lannelmouth sucker on the San
Juan River aI Four Comers and Mexican Hal............................................................ 24

Mean annual and maximwn daily CPUE for bluehead sucker on the San Juan
River at Four Comers and Mexican Hat ....................................................................25

Mean annual and maximum daily CPUE for channel caItish on the San Juan
River aI Four Corners and Mexican Hat .................................................................... 26

Hydrographs of the San Juan River from 1991-1997 for the waIer year and the

summer ............... ,.......... ...... .... ........ .............. ,........ ...... .............. ... .... ... ......... .......... ,.29

Mean annual CPUE for channel caIfish vs. nwnber of days discharge was
greaIer than 2,500 cfs, greater than 5,000 cfs, and less than 500 cfs at Four
Corners for 1991-1997 ...............................................................................................31

Maximum daily CPUE for channel caIfish vs. maximum discharge in cfs,
nwnber of days discharge was greaIer than 2,500 cfs, and less than 500 cfs
at Four Corners for 1991-1997 ...................................................................................32

Mean annual CPUE for channel caIfish vs. number of days discharge was
greater than 10,000 cfs at Mexican Hat for 1991-1997 ............................................. 33

Mean annual CPUE for speckled dace vs. number of days discharge was
greaIer than 10,000 cfs aI Four Corners for 1991-1997 ............................................. 33

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