Skip Links

USGS - science for a changing world

Scientific Investigations Report 2009–5078

Assessment of Eutrophication in the Lower Yakima River Basin, Washington, 2004–07

Table 2. Reference conditions for nutrients suggested by the U.S. Environmental Protection Agency for streams in the Yakima River basin, Washington.

[Data from U.S. Environmental Protection Agency, 2000b. Values in milligrams per liter]

Parameter Number of
streams
Suggested
reference
condition
Total Kjeldahl nitrogen 106 0.288
Nitrite plus nitrate 71 0.072
Total nitrogen 24 0.221
Total phosphorus 127 0.03

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:// pubs.usgs.gov /sir/2009/5078/table2.html
Page Contact Information: Contact USGS
Page Last Modified: Thursday, 10-Jan-2013 19:30:43 EST