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A Regional Modeling Framework of Phosphorus Sources and Transport in Streams of the Southeastern United States

Article and supplemental material

Online Decision Support System--
Informing Nutrient Management Decisions

The regional nitrogen and phosphorus SPARROW models have been incorporated into an interactive, online decision support system so water managers, researchers, and the general public can access  SPARROW models and map predictions of long-term average water quality conditions, track transport to downstream receiving waters, and evaluate management source-reduction scenarios. (More Regional Models)

Table

Model Predictions (3.12 MB) for instream phosphorus load and yield for 8,028 stream reaches and 293 shoreline reaches in the southeast, and the fraction of instream phosphorus load that is delivered to the basin outlet.

Model Input Data

The data assembled to support model calibration are available in the following reports:

Terziotti, S. and others, 2010, Mapping watershed potential to contribute phosphorus from geologic materials to receiving streams, southeastern United States; U.S. Geological Survey Scientific Investigations Map 3102, 1 sheet.

Hoos, A.B. and others, 2008, Data to support statistical modeling of instream nutrient load based on watershed attributes, southeastern United States, 2002, U.S. Geological Survey Open-File Report 2008-1163, 50p. Supporting data include watershed and reach level attributes for nutrient sources and transport for 8,028 stream reaches and mean annual nitrogen and phosphorus load, detrended to 2002, at over 750 stream monitoring sites throughout the southeast.

Related Links:

• Amounts and Sources of Nutrients Delivered to Estuaries in the Gulf of Mexico
• Nitrogen SPARROW model for southeastern U.S. streams
• SPARROW Fact Sheet
• USGS SPARROW model applications
• Regional and national monitoring and assessments of streams and rivers
• Nutrients in rivers, streams, and aquifers in the United States
• Effects of nutrient enrichment on stream ecosystems
• Gulf of Mexico Alliance
• South Atlantic Alliance

For additional information on the study, please contact:

Ana Maria Garcia
agarcia@usgs.gov

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U.S. Department of the Interior | U.S. Geological Survey
URL: http://water.usgs.gov/nawqa/pubs/phosphorus_streams/index.html
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Page Last Modified: Wednesday, 09-Jan-2013 11:59:28 EST