National Water-Quality Assessment (NAWQA) Program
by Daniel R. Wise and Henry M. Johnson
Article and supplemental material
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.
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.
Daniel Wise, email@example.com
Henry Johnson, firstname.lastname@example.org