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 TABLES

Table 1-1. Life stages of humpback chub studied by various investigators. , . . . . . . . , . . . . . . . . . , . . . . 1-3
Table 1-2. Sites commonly referenced in this report by river mile and river kilometer downstream
from Lees Ferry, and as miles and kilometers from Glen Canyon Dam. ................ 1-8
Table 1-3. Characteristics of geomorphic reaches within the four study regions of the Colorado

River in Grand Canyon . . . . . . . , . . . . . , . . . . . . . . . . , , , . , . , . . . . . . . . . . . . . . . . . . . . . . . . 1-11
Table 2-1. Lengths of sample strata within the 11 geomorphic reaches. ............,..,...,..... 2-3
Table 2-2. Description of fish sample gear types or methods used in the Colorado River in Grand
Canyon, October 1990-November 1993 " , . . , . . . . . . . , . . . , . . . . . . . . . . , . . . . . . , , . , . . , 2-7
Table 2-3. Fin punch combinations used by BIW and AGF to mark juvenile humpback chub in
the mainstem Colorado River, and fin clip combinations used by ASU to mark
juveniles in the LCR .............,."..........,............................. 2-12
Table 3-1. Stream gages used for hydrology analysis. . . , . . . . . . . . . . . . . . , . . . . . . . . . . . . , . , . . . . . . 3-2
Table 4-1. Summary of predam and postdam sediment transport and thermal characteristics of
the Colorado River below Glen Canyon Dam. . , . . . . . . . . . . , . . . . . . . . . . . .. . . . . . . . . . , .4-1
Table 4-2. Stream gages used for water quality analysis. , . . . . . . . . . . . . . . . . . . , . . . . . . . . . . . . . . . . . 4-2
Table 4-3. Minimum (min), maximum (max), and mean (ave) water quality parameters of the
Colorado River and selected tributaries at 10 or 15-min intervals during monthly trips
in 1992. BIOIWEST hydrolab data , . , , . . . . . . . , . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-13
Table 4-4. Location, estimated discharge, temperature, and geologic setting of springs in the
vicinity of Fence Fault. ....................................................... 4-15
Table 5-1. Historic and present relative abundance of fish species in the Colorado River, Glen
Canyon to Separation Canyon . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-5
Table 5-2. Dates and approximate locations of non-native fish introductions or the first reports
in the area of Grand Canyon ,.....:,.......................................,... 5-5
Table 5-3. Fish species captured during this investigation in the Colorado River from Lees Ferry
to Diamond Creek, October 1990 - November 1993 ................................ 5-8
Table 5-4. Fish species captured by year and age category (in order of abundance) in the
Colorado River in Grand Canyon, October 1990 - November 1993 ................... 5-10
Table 5-5. Number and percentage of fish species by age category in the four study regions. See
Table 5-3 for description of species codes .............................,......... 5-11
Table 5-6. Arithmetic mean catch rate (AMcpJ and percentage (in parentheses) captured by gill
and trammel nets in 1-mi subreaches of tributary inflows (I) and adjacent main
channel areas (A) in the same geomorphic reach of the Colorado River. . . . . . . . . . . . . . . 5-17
Table 5-7. Arithmetic mean catch rate (AMcpJ and percentage (in parenthesis) captured by
electro fishing in 1-mi subreaches of tributary inflows (I) and adjacent main channel
areas (A) in the same geomorphic reach of the Colorado River. . . . . . . . . . . . . . . . . . . . . . 5-18
Table 5-8. Description of fish sample gear and numbers of humpback chub captured in the
Colorado River in Grand Canyon, October 1990 - November 1993. .................. 5-21
Table 5-9. Total numbers of young-of-year (YOY), juvenile (JUV), and adult (ADU) humpback
chub captured by trip, October 1990 - November 1993 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-22
Table 5-10. Ranking of river miles, according to total numbers of humpback chub captured by age
category in the mainstem Colorado River, October 1990-November 1993 .............5-23
Table 5-11. Location and numbers of humpback chub in nine aggregations in the Colorado River
in Grand Canyon, 1990-93 . . . . . . . . . . , . . , . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-27
Table 5-12. A summary of catch statistics for PIT-tagged humpback chub handled by BIOIWEST
during October 1990 through Novermber 1993 ................................... 5-33
Table 5-13. Fish species captured, tagged and recaptured during this investigation in the Colorado
River from Lees Ferry to Diamond Creek, October 1990 - November 1993 , . . . . . . . . . . . . 5-37
Table 6-1. Mean monthly relative condition (Kn) for 1,693 humpback chub (~200 mm TL) from
the Colorado River in Grand Canyon, October 1990 - November 1993 ................ 6-14
Table 6-2. A comparison of mean monthly relative condition (Kn) for male and female
humpback chub (~200 mm TL) from the Colorado River in Grand Canyon, 1992 . . . . . . . . 6-17
Table 6-3. Mean monthly relative condition (Kn) of 9,126 rainbow trout (~200 mm TL) from the
Colorado River in Grand Canyon, October 1990 - November 1993 .................,.6-19
Table 6-4. Mean monthly relative condition (Kn) of 1,421 brown trout (~200 mm TL) from the
Colorado River in Grand Canyon, October 1990 - November 1993 ................... 6-20