7908

• UCREFRP Catalog Number: 7908
• Author: Valdez, R. A. and R. J. Ryel.
• Title: Life History and Ecology of the Humpback Chub ‎(
• USFW Year: 1995.
• Copyright Material: NO

LIST OF FIGURES

Fig 1-1.

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Fig. 3-1.
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Fig. 3-4}
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Fig. 3-11.
Fig. 4-1.

Fig. 4-2.

Components of the Glen Canyon Environmental Studies (GCES) Phase II Draft
Integrated Research Plan ..................................................... 1-1
Technical study plans for the Native and Endangered Fish Studies component of the
GCES Phase II Draft Integrated Research Plan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
Relationship of assimilation of life history information and hypothesis development

and testing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5

BIOIWEST study area in Grand Canyon and four sample regions ..................... 1-7
Longitudinal cross section of the rock sequence along the Colorado River from Lees
Ferry (RM 0) to Lake Mead (RM 285) ............................................ 1-9
BIOIWEST project schedule ................................................... 2-1
Spatial stratified sampling design for Region II; a through m are sampling strata within
geomorphic reaches, Upper Granite Gorge, Aisles, Middle Granite Gorge, and Muav

Gorge ..................................................................... 2-2
Temporal stratified sampling design for seasons (A) and time of day (B) . . . . . . . . . . . . . . . . 2-6
Typical gill and trammel net set . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8
Typical hoop net set . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8
Schedule offish proceSSing procedures conducted by BIOIWEST . . . . . . . . . . . . . . . . . . . .2-10
Morphometries and meristics recorded for adult humpback chub ~200 mm total

length .................................................................... 2-11
Attachment sites for Carlin dangler tag (A) and Floy anchor tag (B) by previous
investigators, and injection site for PIT tag (C) by this investigation .. . . . . . . . . . . . . . . . . . . 2-12
Juvenile humpback chub with location of scale samples (A), and punches of dorsal
fin (B), upper caudal fin lobe (C), and lower caudal fin lobe (D) ......................2-12
Locations of stream gages (shown as 7-digit numbers) used for hydrology analysis. . . . . . . 3-3
Annual discharge 0NY 1922-92) and mean daily predam 0NY 1922-62) and postdam
(WY 1965-92) flow ofthe Colorado River at Lees Ferry, AZ ..........................3-5
Characteristic wave patterns of the Colorado River as generated by daily fluctuating
releases over a 72-hr period. Flows were measured simultaneously during high
fluctuating releases (-3,000 cfs to -26,500 cfs) at Glen Canyon Dam, above the LCR,
at National Canyon, and above Diamond Creek, May 10-12,1991 . . . . . . . . . . . . . . . . . . . . . 3-6
Six operational scenarios during postdam discharges (WY 1963-93), as measured at

Lees Ferry, AZ .............................................................. 3-7
Low, moderate, and high release water years for Glen Canyon Dam. The range is
represented by lowest and highest hourly releases for each day ...................... 3-8
Research flow schedule for releases from Glen Canyon Dam. The 3-day 5,000 cfs
constant flows were scheduled to begin at 12:01 a.m. on Friday and conclude at
12:01 a.m. on Monday. The 8,000 cfs, 11,000 cfs, and 15,000 cfs constant flows each

lasted 11 days . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8
Mean daily flow of the Colorado River for WY 1991, 1992, and 1993 as measured
above the Little Colorado River, AZ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9
Annual discharge and mean daily flow for WY 1948-91 of the Little Colorado River at

Cameron, AZ .............................................................. 3-10
Mean daily flow of the Little Colorado River for WY 1991, 1992, and 1993 near the

mouth. ................................................................... 3-11
Mean daily flow of the Paria River near Lees Ferry, AZ (WY 1923-93), Bright Angel
Creek near Phantom Ranch, AZ ryw 1923-74), and Kanab Creek near Fredonia, AZ

(WY 1963-80) .............................................................. 3-12
Flow patterns during previous investigations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-14
Predam (1959) and postdam (1976) mean monthly temperatures of the Colorado
River at Lees Ferry, AZ and near Grand Canyon, AZ (Le., Phantom Ranch) ............. 4-3
Mean monthly water temperature at Lees Ferry follOWing closure of Glen Canyon
Dam and impoundment of Lake Powell on March 13, 1963. Monthly means are
based on measurements at 15-min intervals. Suitable spawning temperature range
for humpback chub is shown as 16-220C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4