USGS NAWQA: Regional SPARROW Model Assessments of Streams and Rivers

National Water-Quality Assessment (NAWQA) Program

Home Headlines Featured Studies Liaison Committee Informing Decision Makers Data Modeling/Software Publications Maps

Regional SPARROW Model Assessments of Streams and Rivers

Pacific Northwest (More Regional Models)

Surface-Water Nutrient Conditions and Sources in the United States Pacific Northwest

by Daniel R. Wise and Henry M. Johnson
Article and supplemental material

Online Decision Support System (Guidance Document)-- Informing Nutrient Management Decisions

The regional nitrogen and phosphours 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.

SPARROW Map Results

These interactive maps show the primary sources of total nitrogen and total phosphorus delivered to streams along with watershed level estimates of nutrient export and enrichment.

For additional information on the study:

Daniel Wise, dawise@usgs.gov
Henry Johnson, hjohnson@usgs.gov

Accessibility FOIA Privacy Policies and Notices

U.S. Department of the Interior | U.S. Geological Survey
URL: http://water.usgs.gov/nawqa/sparrow/mrb/7.html
Page Contact Information: gs-w_nawqa_whq@usgs.gov
Page Last Modified: Wednesday, 09-Jan-2013 11:58:47 EST