Nitrate Trends in Minnesota Rivers

Dave Wall; Dave Christopherson; Dave Lorenz; Gary Martin

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USGS · 70048699

Nitrate Trends in Minnesota Rivers

Dave Wall·Dave Christopherson·Dave Lorenz·Gary Martin

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Abstract

The objective of this study was to assess long-term trends (30 to 35 years) of flow-adjusted concentrations of nitrite+nitrate-N (hereinafter referred to as nitrate) in a way that would allow us to discern changing trends. Recognizing that these trends are commonly different from one river to another river and from one part of the state to another, our objective was to examine as many river monitoring sites across the state as possible for which sufficient long term streamflow and concentration data were available.

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Source-reported bounding extent: 43.5° to 49.38° latitude; -97.24° to -89.48° longitude. This indicates report coverage, not an exact sampling location. View area on OpenStreetMap.

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BibTeX RIS

Dave Wall, Dave Christopherson, Dave Lorenz, Gary Martin. 2013. Nitrate Trends in Minnesota Rivers. https://pubs.usgs.gov/publication/70048699

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