USGS Scientific Invesigations 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 

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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 1. Precipitation, population, age, and income information for cities where samples were collected, Columbia River Basin, Washington and Oregon. 

[Data from U.S. Census Bureau (2010). Symbols: <, less than; >, greater than] 

City	State	County	Average  annual  precipitation  (inches)	Population	Population density (people per  square mile)			Population age distribution  (percent)	Median age  (years)	Median annual  household income  (U.S. dollars)	Average household size (persons)
City	State	County	Average  annual  precipitation  (inches)	Population	< 18 years	18–65 years	> 65 years	Population age distribution  (percent)	Median age  (years)	Median annual  household income  (U.S. dollars)	Average household size (persons)
Wenatchee	Washington	Chelan	9	31,925	4,110	25	61	14	36.4	$42,600	2.55
Richland	Washington	Benton	7	48,058	1,350	25	62	13	38.4	$62,200	2.53
Umatilla	Oregon	Umatilla	8	6,906	1,560	23	73	4	31.5	$46,800	3.08
The Dalles	Oregon	Wasco	14	13,620	2,150	25	57	18	39.3	$44,100	2.40
Hood River	Oregon	Hood River	32	7,167	2,810	28	58	14	34.9	$47,200	2.43
Portland	Oregon	Multnomah	37	583,776	4,380	20	70	10	35.5	$48,100	2.27
Vancouver	Washington	Clark	42	161,791	3,480	24	64	12	35.6	$48,000	2.46
St. Helens	Oregon	Columbia	46	12,883	2,840	28	64	8	33.3	$53,500	2.74
Longview	Washington	Cowlitz	48	36,648	2,530	24	60	16	39.1	$39,000	2.32

First posted April 25, 2012

Report PDF (5 MB)

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

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