9304

• UCREFRP Catalog Number: 9304
• Author: Mueller, G., L. Boobar, R. Wydoski and K. Comella.
• Title: Aquatic Survey of the Lower Escalante River, Glen Canyon National Recreation Area, Utah; June 22-26, 1998.
• USFW Year: 1998.
• USFW - Doc Type: \
• Copyright Material: NO

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Eighty nine fish, representing 4 (99%) indigenous species, were collected in the mainstem river
between Harris Wash and Fence Canyon (Figures 2.0). We encountered multiple year classes
(possibly 4) of round tail chub, flannelrnouth sucker (4-5), and green sunfish (2-3) (Figure 2.1).

Roundtail chub were spawning, males were tuberculate and in breeding colors and we collected
one ripe female. We encountered only one non-native upstream ofFence Canyon; ajuvenile
brown trout. Length and weight information is provided in Table 2.3 and Figure 2.2.

Table 2.1 Physical measurements (width, depth, length, velocity) of sites 1, 2, 3, 4, 5 sampled on
the Escalante River, Utah.

Site

Width
(m)

Site 1 9.8
8.5
7.6
Average 8.6

Site 2 0.4
10.7
9.8
Average 10.3

Site 3* 4.9
5.2
4.9
Average 5.0

Site 4 7.6
9.8
11.3
Average 9.6

Site 5* 4.8
4.0
2.1
Average 2.2

Length
(m)

38.7

43.3

30.5

21.3

29.0

* measurement of side channel.

Depth
(m)

Max. Depth Travel Time
(m) (see)'

Volume (efs)
(m3/s)

.53
.61
.67
.60

33
55
40
43

3.72 (131)

.98

.38
.38
.45
.40

.68

35
36
34
35

5.40 (191)

.31
.38
.38
.33

19
22
20
21

1.92 (68)*

.53

.38
.45
.53
.45

19
18
18
18

4.09 (144)

.53

.31
.27
.45
.34

39
41
41
40

0.43 (15)*

.53

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