7055

• UCREFRP Catalog Number: 7055
• Author: Archer, D. L., L. R. Kaeding and B. D. Burdick.
• Title: A Study of the Endangered Fishes of the Upper Colorado River.
• USFW Year: 1985.
• USFW - Doc Type: Grand Junction, Colorado.
• Copyright Material: NO

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LIST OF FIGURES (Continued)

Fiqure Paqe

16. Movement of ten radio-tagged humpback chub in the Black Rocks
area of the Colorado River, Colorado, April-July 1983. Numbers
designate individual fish (refer to Table 12). 49

17. Movement of thirteen radio-tagged humpback chub and seven radio-
tagged roundtail chub in the upper Colorado River, April-August
1984. The upper figure depicts long-distance fish movement
upstream and downstream from Black Rocks; the lower figure is an
expanded view of fish movement in the Black Rocks area. Numbers
designate individual fish (refer to Table 13). 50

18. Map of the Grand Valley area showing locations of experimental
backwaters at RM 146.9 (1), 151.6 (2), 179.5 (3), and 181.8
(4), and the locations of Fish Pond (5), Labor Camp Pond (6)
and Walter walker Wildlife Area (7). 62

19. Mean catch per unit effort (CPUE) for stocked Colorado squawfish in
experimental backwaters, fall, 1982. Initial CPUE were collected
when blocking nets were in place and stocked squawfish could not
escape the backwater; subsequent collections were made after
blocking nets were removed. Temperatures (spot readings) of
experimental backwaters are also given. 63

20. Length-frequency distributions for four species of predatory fish
in Fish Pond. Open bars represent fish removed from the Pond
before Colorado squawfish were stocked. Closed bars represent
fish collected from the pond after Colorado squawfish were
stocked. 66

21. Length-frequency distributions for green sunfish and largemouth
bass collected from Labor Camp Pond, fall, 1982. 67

22. Mean catch per unit effort (CPUE) for Colorado squawfish stocked
in Fish Pond and Labor Camp Pond, fall, 1982. Temperatures (spot
readings) are also given. 68

23. Bathometric map of experimental backwater at river mile 146.9.
Surface area is 0.2 ha. Contour interval is in feet. . 115

24. Bathometric map of experimental backwater at river mile 151.6.
Surface area is 0.1 ha. Contour interval is in feet. . 115

25. Bathometric map of experimental backwater at river mile 179.5.
Surface area is 0.6 ha. Contour interval is in feet. . 116