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Table 2. Physical measurements at sampling sites, Yellowstone River Basin, July-September 1998
[ft3/s, cubic feet per second; ÁS/cm, microsiemens per cubic centimeter at 25░Celsius; C, Celsius; mg/L, milligrams per liter; NA, not available; E, estimated]
Site number (fig. 1) Date Discharge, instantaneous
(ft3/s)
Percent of annual mean discharge Specific
conductance
(ÁS/cm)
pH
(standard units)
Water
temperature (degrees C)
Oxygen,
dissolved
(mg/L)
Oxygen,
dissolved
(percent
saturation)
1 9/4/98 1,580 118 83 8.4 17.5 8.3 111
2 9/3/98 NA NA 172 8.4 15.0 8.0 104
3 8/27/98 3,280 105 170 7.6 14.5 8.7 103
4 8/27/98 35 NA 123 7.8 10.5 9.1 98
5 8/26/98 531 51 612 8.1 17.0 8.6 102
6 8/25/98 4,740 67 301 8.4 21.0 9.6 123
7 9/25/98 NA NA 519 7.8 20.2 7.5 NA
8 8/3/98 NA NA 155 7.5 10.0 9.0 104
9 8/6/98 NA NA 161 7.8 11.5 8.8 106
10 8/31/98 2,720 122 676 8.4 22.0 6.7 89
11 9/2/98 NA NA NA NA NA NA NA
12 8/5/98 E30 NA 66 7.4 12.5 8.6 103
13 9/1/98 NA NA 1,130 8.1 20.0 8.0 102
14 9/2/98 NA NA 878 8.1 14.5 9.0 102
15 9/22/98 130 87 320 8.2 8.4 9.9 99
16 7/27/98 12,990 118 401 8.6 24.5 7.8 104
17 9/23/98 110 60 207 8.2 9.4 9.5 97
18 9/21/98 276 169 452 8.1 13.4 9.1 98
19 9/24/98 290 62 483 8.5 15.5 10.4 120
20 8/1/98 E12 27 2,010 7.9 22.0 6.7 91
21 7/31/98 NA NA 1,180 8.3 20.5 7.5 97
22 7/30/98 6.4 27 1,930 8.2 22.0 8.1 105
23 7/29/98 E60 10 1,940 8.3 23.0 7.5 96
24 7/28/98 11,300 88 433 8.6 24.5 6.8 89

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