2002 SPARROW Model Results for the Midcontinental Region of North America: Total Phosphorus and Total Nitrogen

SPARROW model results of long-term mean-annual total nitrogen and total phosphorus in streams of the Midcontinental Region of North America. The simulated loads represent source inputs similar to 2002 and normalized to long-term average hydrologic conditions for the period from 1970 to through 2012.

Sources/Usage: Public Domain. View Media Details