Skip Links

USGS - science for a changing world

Scientific Investigations Report 2012–5068


Reconnaissance of Contaminants in Selected Wastewater-Treatment-Plant Effluent and Stormwater Runoff Entering the Columbia River, Columbia River Basin, Washington and Oregon, 2008–10


Table 18. Physical properties and suspended-sediment results for stormwater runoff, Columbia River Basin, Washington and Oregon, 2009–10.


[Station names are shown in table 3. Abbreviations: L/min, liters per minute; mg/L, milligrams per liter; µm, micrometer; µS/cm, microSiemens per centimeter; –, not determinded at time of sampling or not analyzed; E, estimated]


Analyte Estimated

discharge from

pipe during

sampling

(L/min)
Suspended

sediment

(mg/L)
Suspended
sediment
(percent finer
than 63 µm)
pH
(standard
units)
Specific
conductance

(µS/cm)
Wenatchee 0.5 5 78 7.2 144
Richland 9 82
Umatilla 834 86
The Dalles 1.8 22 99
Hood River 1.7 2 59
Portland1 10 20 95
Vancouver1 12 61 80 7.3 E 12
Vancouver2 0.8 62 94 7.5 E 38
Portland2 12 10 88 7.6 E 36
Willamette1 12 93 7.9 140
Willamette2–Dec 3.3 47 97 6.5 131
Willamette2–May 3.3 36 98 6.8 263
Willamette3 162 95 7.1 E 98
Willamette4 2.5 42 98 7.4 112
St Helens 40 5 94 7.1 144
Longview 60 53 99 6.9 243

First posted April 25, 2012

For additional information contact:
Director, Oregon Water Science Center
U.S. Geological Survey
2130 SW 5th Avenue
Portland, Oregon 97201
http://or.water.usgs.gov

Part or all of this report is presented in Portable Document Format (PDF); the latest version of Adobe Reader or similar software is required to view it. Download the latest version of Adobe Reader, free of charge.

Accessibility FOIA Privacy Policies and Notices

Take Pride in America logo USA.gov logo U.S. Department of the Interior | U.S. Geological Survey
URL: http://pubsdata.usgs.gov/pubs/sir/2012/5068/table18.html
Page Contact Information: GS Pubs Web Contact
Page Last Modified: Thursday, 10-Jan-2013 19:50:52 EST