8171

• UCREFRP Catalog Number: 8171
• Author: U.S. Fish and Wildlife Service.
• Title: A Study to Determine the Biological Feasibility of Pit Tags for Endangered Fishes in the Upper Colorado River Basin.
• USFW Year: 1990.
• USFW - Doc Type: Grand Junction, Colorado.
• Copyright Material: NO

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Table 3. Dissolved oxygen measurements of the four pond study sites, January
and February 1989.

Study Sampling Date Sampling Dissolved Snow Ice
Site Time of Day Depth (m)a Oxygen (mg/1) Depth (cm) Depth (cm)
Gardner Pond 01/26
9
3
3
22.0
1500 0.1 .
0.7 9 --- ---
02/09 0.1 3 1.9 30.0
1300 1.0 3 --- ---
02/24 0.1 5 0.0 25.0
1500 1.0 4 --- ---
13th-Hole Pond 01/25 0.1 15 17.8 22.0
1500 0.8 15 --- ---
1.5 15 --- ---
02/09 0.1 7 6.3 32.5
1200 1.0 8 --- ---
02/23 0.1 12 0.0 28.0
1500 0.9 11 --- ---
West Pond 01/23 0.1 9 4.7 19.2
1400 1.3 9 --- ---
2.5 9 --- ---
02/09 0.1 6 4.7 26.8
1000 1.0 6 --- ---
2.2 7 ---
02/23 0.1 10 0.0 28.5
1400 1.0 7 --- ---
2.1 9 --- ---
Humphrey Pond 01/26 0.1 4 2.2 23.1
1500 0.7 4 --- ---
02/09 0.1 2 2.3 27.0
1400 0.7 2 --- ---
1.4 3 --- ---
02/24 0.1 5 0.0 26.5
1500 1.2 2 --- ---
aMeasured from the bottom of the ice sheet.
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