Nutrient and Suspended-Sediment Transport and Trends in the Columbia River and Puget Sound Basins, 1993

Scientific Investigations Report 2007–5186

U.S. GEOLOGICAL SURVEY
Scientific Investigations Report 2007–5186

Figure - refer to figure caption for alternative text description

Figure 12. Annual mean discharge of total nitrogen loads in the Columbia River, and relative total nitrogen load contributions from Columbia River monitored tributaries and point sources, Oregon and Washington, water year 2000. (Vertical scales on graphs are identical.)

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