Upper Midwest Environmental Sciences Center
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Summary of Monitoring Findings for Fiscal Year 2000
Figures| Figure 5. | Nitrate plus nitrite (mg/L) concentrations in Pool 26 (solid line) and Open River (dashed line) during summer stratified random sampling. An upward trend (0.2 mg/L per year) is statistically significant (P < 0.001) at both locations. Open River concentrations are slightly lower, probably because of dilution by the Missouri River, which enters the Upper Mississippi River immediately below Pool 26. |
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U.S. Department of the Interior |
U.S. Geological Survey
URL: http://www.umesc.usgs.gov/reports_publications/ltrmp/2000/summary_findings/figure05.html
Page Contact Information: Contacting the Upper Midwest Environmental Sciences Center
Page Last Modified:
October 2, 2007
