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SPARROW Regions

By Water Resources
USA Map showing Northeast, Southeast, Midwest, Southwest, and Pacific regions
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Detailed Description

The regions delineated for collection of streamflow and constituent load data for use in Spatially Referenced Regressions on Watershed Attributes (SPARROW) models in the conterminous United States

Sources/Usage

Public Domain.

USGS Scientific Investigations Report 2019-5069
Figure 1, Estimates of Long-Term Mean Daily Streamflow and Annual Nutrient and Suspended-Sediment Loads Considered for Use in Regional SPARROW Models of the Conterminous United States, 2012 Base Year