Scientific Investigations Report 2007–5164
U.S. GEOLOGICAL SURVEY
Scientific Investigations Report 2007–5164
Table 5. Concentrations of suspended sediment, suspended organic carbon, and DDT and metabolites transported during storms in the McKenzie River basin, Oregon, 2003.
[Water chemistry was analyzed at Severn Trent Laboratory in Seattle, WA, except suspended particulate carbon, which was analyzed at the U.S. Geological Survey’s National Water Quality Laboratory in Denver, CO, and suspended-sediment concentrations, which were analyzed at the Cascades Volcano Observatory Sediment Lab in Vancouver, WA. Abbreviations: DDD, dichloro-diphenyl-dichloroethane; DDE, dichloro-diphenyl-dichloroethene; DDT, dichloro-diphenyl-trichloroethane; FNU, Formazin Nephelometric Units; MDL, method detection limit, defined by USEPA as “the minimum concentration of a substance that can be reported with 99 percent confidence that the analyte concentration is greater than zero” (40 CFR Part 136 Appendix B); PQL, Practical Quantitation Limit, the lowest concentration of an analyte that can be reliably measured within specified limits of precision and accuracy during routine laboratory operating conditions (50 FR 46906); mm, millimeter; mg/L, milligram per liter; µg/L, microgram per liter; –, no data; ND, not detected]
| Station name | Date | Time | Turbidity (FNU) | Suspended sediment (mg/L) |
Fine sediment (percent <0.063 mm) |
Suspended particulate carbon (mg/L) |
Dissolved organic carbon MDL (mg/L) |
Dissolved organic carbon (mg/L) |
|---|---|---|---|---|---|---|---|---|
| McKenzie River above South Fork, near Rainbow (MRBO) |
03-08-02 12-14-03 |
11:10 11:30 |
1.6 8.2 |
4 17 |
– 63 |
– – |
0.35 – |
2.2 – |
| South Fork McKenzie River above Cougar Reservoir, near Rainbow (SFCO) |
03-08-03 12-13-03 |
16:30 15:30 |
2.4 91.4 |
6 310 |
42.9 45.6 |
– 18 |
.3 5.5 |
2.1 2.5 |
| South Fork McKenzie River near Rainbow (CGRO) |
02-03-03 03-08-03 12-14-03 |
16:50 13:35 14:20 |
74.5 5.8 112.7 |
50 4 88 |
95.9 96.9 96.5 |
.6 – 1.8 |
.35 .35 .5 |
1.8 3.9 .8 |
| Blue River at Blue River (BLUE) | 12-15-03 | 13:40 | 44.7 | 30 | 98 | – | – | – |
| McKenzie River near Vida (VIDA) | 02-03-03 12-14-03 |
12:50 8:50 |
26.2 26.5 |
18 25 |
90.7 82.9 |
.3 – |
.35 – |
1.8 – |
| McKenzie River at Hayden Bridge, near Springfield |
12-15-03 | 16:20 | 36.1 | 47 | 70.8 | .9 | .5 | 1.9 |
| DDT and Metabolites in Whole Water | ||||||||
| Station name | Date | Time | DDD PQL (µg/L) |
DDD results (µg/L) |
DDE PQL (µg/L) |
DDE results (µg/L) |
DDT PQL (µg/L) |
DDT results (µg/L) |
| McKenzie River above South Fork, near Rainbow (MRBO) |
03-08-02 12-14-03 |
11:10 11:30 |
0.0005 .0022 |
ND ND |
0.0004 .0022 |
ND ND |
0.0005 .0022 |
ND ND |
| South Fork McKenzie River above Cougar Reservoir, near Rainbow (SFCO) |
03-08-03 12-13-03 |
16:30 15:30 |
.0005 .0022 |
ND ND |
.0004 .0022 |
ND ND |
.0005 .0022 |
ND ND |
| South Fork McKenzie River near Rainbow (CGRO) |
02-03-03 03-08-03 12-14-03 |
16:50 13:35 14:20 |
.0005 .0005 .0020 |
ND ND ND |
.0004 .0004 .0020 |
ND ND ND |
.0005 .0006 .0020 |
ND ND ND |
| Blue River at Blue River (BLUE) | 12-15-03 | 13:40 | .0024 | ND | .0024 | ND | .0024 | ND |
| McKenzie River near Vida (VIDA) | 02-03-03 12-14-03 |
12:50 8:50 |
.0049 .0021 |
ND ND |
.0040 .0021 |
ND ND |
.0052 .0021 |
ND ND |
| McKenzie River at Hayden Bridge, near Springfield |
12-15-03 | 16:20 | .0021 | ND | .0021 | ND | .0021 | ND |
| DDT and Metabolites in Suspended Sediment | ||||||||
| Station name | Date | Time | DDD PQL (µg/L) |
DDD results (µg/L) |
DDE PQL (µg/L) |
DDE results (µg/L) |
DDT PQL (µg/L) |
DDT results (µg/L) |
| McKenzie River above South Fork, near Rainbow (MRBO) |
03-08-02 12-14-03 |
11:10 11:30 |
– – |
– – |
– – |
– – |
– – |
– – |
| South Fork McKenzie River above Cougar Reservoir, near Rainbow (SFCO) |
03-08-03 12-13-03 |
16:30 15:30 |
– 0.0008 |
– ND |
– 0.0008 |
– ND |
– 0.0008 |
– ND |
| South Fork McKenzie River near Rainbow (CGRO) |
02-03-03 03-08-03 12-14-03 |
16:50 13:35 14:20 |
.002 – .0006 |
ND – ND |
.0017 – .0006 |
ND – ND |
.0021 – .0006 |
ND – ND |
| Blue River at Blue River (BLUE) | 12-15-03 | 13:40 | – | – | – | – | – | – |
| McKenzie River near Vida (VIDA) | 02-03-03 12-14-03 |
12:50 8:50 |
.0001 .0008 |
ND ND |
.0001 .0008 |
ND ND |
.0001 .0008 |
ND ND |
| McKenzie River at Hayden Bridge, near Springfield |
12-15-03 | 16:20 | – | – | – | – | – | – |
U.S. Department of the Interior | U.S. Geological Survey
URL: https://pubs.usgs.gov/sir/2007/5164
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