7321

• UCREFRP Catalog Number: 7321
• Author: U.S. Fish and Wildlife Service.
• Title: Fish and Wildlife Service Upper Colorado River Basin Technical Advisory Study Important Reach Analysis - CRFP.
• USFW Year: 1984.
• USFW - Doc Type: \
• Copyright Material: NO

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r:umooack Chub

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Locatior.:

A se: :7 :riterlc were established for wnat constitutes spawning areas.

Confirmec

1. ~resEnce of ripe females durin; s~awning season

2. P~esence.of a range of size classes

3. Deep Canyon habitat

Suspected

1. Presence of adults

2. Deep canyon habitat

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A total of 2~humPback chub have been identified, 3 of which were
; confirmed by R. R. Miller and G. R. Smith. No s~awning sites were confirmed
for humpback chub but two areas were classified as suspected: RM 146-171
in the Green River and RM 18-24 in the Yampa River. Adu1ts were captured
from both canyon areas and larvae were also tentatively identified by
0: Snyder from both locations.

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