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Interactive map showing SPARROW model results for nitrogen and phosphorus

By Integrated Water Availability Assessments
Screenshot of an interactive map showing a map of the U.S., with total nitrogen on one side and phosphorus on the other.
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Detailed Description

Screenshot of Figure 1.1. Interactive, searchable map showing SPAtially Referenced Regressions On Watershed (SPARROW) model results for nitrogen, phosphorous, and sediment in the conterminous United States. Map derived from figures 3, 4, and 8 of Status of Water-Quality Conditions in the United States, 2010–20 (Professional Paper 1894-C).

Sources/Usage

Public Domain.

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