SPARROW Midcontinental model results thumbnail

By National Water Quality Program September 3, 2019

Choropleth map (in brown) showing phosphorus load across midcontinental North America

Original Thumbnail Medium

Detailed Description

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

Sources/Usage

Public Domain.

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