WSP03387

• File Number: 8240.200.10.B
• Description: UCRBRIP - Riverine Fish Flow Investigations
• Basin: Colorado Mainstem
• Date: 6/1/2002
• Author: CDOW
• Title: Riverine Fish Flow Investigations 2002
• Water Supply Pro - Doc Type: Publication

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LIST OF TABLES

Recommended mean monthly flows [Osmundson et al (1995)] for the I5-Mile

Reach in cubic ft/sec. .. ....... ......................... ........... ................................. .... .............9

Mean monthly and monthly minimum flows recorded at the Palisade gage, 15-
Mile Reach, Colorado River for summer months during the three year of

the study .. .......... ................... ........ ........ ........... ..................... ........................ ......... 10

Depth and velocity criteria used to define meso-habitat types. .................................... 16

Species composition for fish over and under 15 cm caught in the Yampa River
in August/September 2001. .......................................................................... ........18

Species composition from seine hauls at the Sevens and Duffy sites in 1999

and 200 I, Yampa River. ...... ... .... .......... .......... ... .............................................. .......2 I

Species composition for fish over 15 cm and less than 15 em at Corn Lake and
Clifton in September/October 2001, Colorado River. ............................... .............24

Species composition for fish over and less than 15 cm at the Big Gypsum site
on the Dolores River, July 2001. ................................................................ ............27

Mean lengths of bluehead sucker captured druing the study period (I998 to
2001) in the Yampa, Colorado and Dolores Rivers. .................... ........28

Mean lengths of flannel mouth sucker captured druing the study period (I 998
to 2001) in the Yampa, Colorado and Dolores Rivers...............................................29

Mean lengths of roundtail chub captured druing the study period (1998 to
2001) in the Yampa, Colorado and Dolores Rivers ......................................... ........30

Yampa River population estimates with 95% C.!. (recaptures), and density
estimates (No./IOOOm), 2001. Mean stream width is about 53 m at 125
cfs, (Stewart 2000).............................................................. ........... ..................... ..... 35

Fish density (fishlkm) estimates for the DuffY station, Yampa River for 1998,
1999, 2000 and 2001. Significant differences (alpha = 0.05) between
years are denoted by the letter (a, b, c, d) following estimate and *
indicates (alpha = 0.0083, Bonferroni). . ..................................................................36

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