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Scientific Investigations Report 2007–5164

U.S. GEOLOGICAL SURVEY
Scientific Investigations Report 2007–5164

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Table 2. Suspended-sediment concentrations and associated turbidity during storm sampling in the McKenzie River basin, Oregon, 2003–04.

[Samples excluded from regressions between suspended-sediment concentration and turbidity were those where turbidity was less than 0.9 FNU or was not available. No regression was performed for the McKenzie River at Hayden Bridge because not enough samples were collected. Abbreviations: ft3/s, cubic foot per second; FNU, formazin nephelometric units; SSC, suspended-sediment concentration: mg/L, milligram per liter; mm, millimeter; N/A, not available; <. less than; *, sample was used in regression]

Date Time Discharge
(ft3/s)
Turbidity
(FNU)
SSC
(mg/L)
Percent
< 0.063 mm
Samples
used in
regression
14159110—McKenzie River above South Fork McKenzie, near Rainbow (MRBO)
01-03-03 12:40 N/A N/A 8 73
01-14-03 11:50 N/A N/A 2 25
01-27-03 10:17 N/A N/A 8 62
01-29-03 16:27 3554 0.9 1 61 *
01-30-03 15:00 10,385 52.5 170 40 *
01-31-03 14:15 7,286 8.8 22 46 *
03-08-03 11:10 4,314 1.6 4 N/A *
04-14-03 13:05 3,396 .3 1 50
12-13-03 13:34 8,505 35.1 106 47 *
12-14-03 11:20 6,174 8.2 17 63 *
01-22-04 09:30 2,852 <.1 2 73
01-29-04 10:00 7,528 9.8 47 24 *
Total number of samples used in Regression: 7
14159200—South Fork McKenzie River above Cougar Reservoir, near Rainbow (SFCO)
01-03-03 12:02 1,860 6.9 6 74 *
01-13-03 17:20 634 .1 2 44
01-26-03 15:12 1,121 1.1 4 59 *
01-30-03 15:02 5,365 72.1 164 56 *
01-31-03 10:15 4,620 26.3 38 49 *
03-07-03 16:30 1,151 2.4 6 43 *
03-13-03 17:04 1,362 .5 14 68
04-10-03 15:10 1,128 17.7 28 98 *
04-14-03 17:24 1,008 .1 2 65
12-13-03 15:30 5,394 91.4 310 46 *
12-13-03 16:40 5,713 118.7 351 48 *
01-28-04 15:45 1,804 4.8 6 78 *
02-10-04 13:43 766 <.1 21 84
Total number of samples used in Regression: 9
14159500—South Fork McKenzie River near Rainbow (CGRO)
01-03-03 12:35 2,210 91.4 65 99 *
01-14-03 14:15 900 7.2 6 88 *
01-27-03 08:15 1,716 8.1 8 85 *
01-29-03 17:40 1,657 14.4 15 89 *
01-30-03 14:00 623 334 266 99 *
01-31-03 11:50 2,596 320.3 211 98 *
02-01-03 09:35 2,655 232 151 96 *
02-03-03 16:50 2,633 74.5 50 96 *
02-06-03 12:24 1,046 37 27 96 *
02-12-03 09:23 568 20.1 13 95 *
03-08-03 13:35 2,080 5.8 4 97 *
03-13-03 13:45 1,728 9.6 9 67 *
04-15-03 18:00 1,170 4.4 6 83 *
11-29-03 18:02 1,891 11.9 10 90 *
11-30-03 00:02 1,891 15.5 14 93 *
11-30-03 06:02 1,891 14.5 12 93 *
11-30-03 12:02 1,889 13.4 11 92 *
11-30-03 18:02 1,889 11.9 9 90 *
12-01-03 00:02 1,876 10.1 8 72 *
12-14-03 14:20 2,830 112.7 88 97 *
12-15-03 10:30 2,813 77.6 55 97 *
12-15-03 12:30 2,813 74.2 48 97 *
12-23-03 12:00 1,064 12 12 87 *
01-21-04 15:55 1,477 5.2 4 88 *
01-30-04 08:30 2,554 20.2 19 93 *
05-27-04 09:35 969 .5 2 77
05-27-04 09:36 969 .5 3 56
Total number of samples used in Regression: 25
14162200—Blue River at Blue River (BLUE)
01-03-03 12:55 1,923 N/A 17 99
01-14-03 11:52 1,040 5.8 4 96 *
01-27-03 12:27 2,761 15.7 14 91 *
01-30-03 10:18 616 17.2 10 97 *
01-31-03 16:55 69 9.1 14 82 *
03-08-03 15:10 73 3.3 6 61 *
04-15-03 14:10 694 2.6 2 85 *
12-05-03 09:50 1,131 12.6 10 91 *
12-15-03 13:40 2,527 44.7 30 98 *
01-22-04 11:40 510 N/A 8 77
05-27-04 15:20 415 2.5 1 81 *
Total number of samples used in Regression: 9
14162500—McKenzie River near Vida (VIDA)
01-03-03 10:10 10,074 N/A 20 87
01-14-03 09:25 5,340 3.7 4 74 *
01-27-03 14:25 11,062 14.1 21 54 *
01-31-03 12:00 11,947 83.2 72 89 *
02-01-03 11:00 11,343 60.1 51 84 *
02-03-03 12:50 9,544 26.2 18 91 *
02-06-03 13:44 5,989 8.7 7 90 *
04-17-03 14:05 5,247 2.2 2 84 *
12-13-03 12:29 13,364 67.8 41 74 *
12-14-03 08:50 10,626 26.5 25 83 *
01-22-04 14:35 4,771 1.9 3 65 *
01-29-04 15:30 12,270 13.9 33 54 *
Total number of samples used in Regression: 11
440418122574500—McKenzie River at Hayden Bridge, near Springfield, OR
01-14-03 16:35 N/A N/A 8 75
01-27-03 16:27 N/A 19.1 56 56
02-01-03 14:30 N/A N/A 69 70
12-15-03 16:20 N/A 2.24 47 71
01-22-04 16:45 N/A N/A 5 65

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