WSP04165

• File Number: 8240.200.10.B
• Description: UCRBRIP - Riverine Fish Flow Investigations
• Basin: Colorado Mainstem
• Date: 6/1/2003
• Author: CDOW
• Title: Riverine Fish Flow Investigations 2003
• Water Supply Pro - Doc Type: Publication

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LIST OF TABLES

Recommended mean monthly flows [Osmundson et al (l995)J for the
IS-Mile Reach in cubic ftlsec. ...................................................................................10

Mean monthly and monthly minimum flows recorded at the Palisade
gage, IS-Mile Reach, Colorado River for summer months during
the three years of the study. ........................................................................................11

Dates for electro-fishing and flows on the day of the sample. ........................................15

Depth and velocity criteria used to define meso-habitat types. ......................................21

Species compostion tor tish over 15 cm from all study sites. ...........................................25

Species composition from seine hauls at the Sevens and Duffy sites in
1999 and 200]. Yampa River. ....................................................................................29

Species composition for fish greater and less than 15 cm at the Big
Gypsum site on the Dolores River, July 2001. ...........................................................30

Mean lengths of bluehead sucker captured during the study period
(1998 to 2001) in the Yampa, Colorado and Dolores Rivers. ....................................31

Mean lengths of flannelmouth sucker captured during the study period
(1998 to 2001) in the Yampa, Colorado and Dolores Rivers ......................................33

Mean lengths of roundtail chub captured druing the study period
(] 998 to 200]) in the Yampa, Colorado and Dolores Rivers. .....................................33

Density and biomass estimates in fish per kilometer and kilograms
per kilometer for each study site. ...............................................................................36

Density and biomass estimates in fish per hectare and kilograms per
hectare for each study site. .........................................................................................37

Physical attributes of each study site (mean velocity, length, mean
width, surface area at modeled flows) .........................................................................41

Meso habitat availability per kilometer at a reference flow typical of

the base flow period. . ..................................................................................................42

Correlation between riffle meso habitat and total fish biomass. ........................................43

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