National Water-Quality Assessment (NAWQA) Program
by Juliane B. Brown, Lori A. Sprague, and Jean A. Dupree
Article and supplemental material | USGS Fact Sheet
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.
Juliane Brown, jbbrown@usgs.gov
Lori Sprague, lsprague@usgs.gov