9432

• UCREFRP Catalog Number: 9432
• Author: Modde, T. and M. Fuller.
• Title: Feasibility of Channel Catfish Reduction in the Lower Yampa River.
• USFW Year: 2002.
• USFW - Doc Type: Vernal.
• Copyright Material: NO

catfish were intermediate between the upper Yampa River and alluvial reaches of the Green River.

The size gradient suggests that recruitment may not occur in the Yampa River, and that the alluvial

reaches of the Green River may be an important nursery area for channel catfish and that larger

catfish in the Yampa River may provide an important source of reproducing adults that enhance

channel catfish recruitment.

Conclusions

1. In three of four removal (treatment) reaches of the Yampa River in Dinosaur National

Monument, channel catfish numbers were significantly reduced following removal efforts

in 1999.

2. The more effective methods of removing channel catfish from the Yampa River was by

angling and electrofishing.

3. A gradient in total length of fish occurred in which smaller fish were found downstream in

both the Yampa and Green rivers.

Recommendations

1. Channel catfish removal be continued to include all of the Yampa River in Yampa Canyon.

2. Channel catfish removal be expanded into reaches of the Yampa River between Craig and

Deerlodge to reduce numbers of larger adult fish that may be an important source of the

Yampa Canyon spawning population and reproductive output in Yampa Canyon and the

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