Regional SPARROW Model Assessments of Streams and Rivers

Science Center Objects

Regional SPARROW Model Assessments of Streams and Rivers (archived) includes models (and supporting data) that were developed for seven large regions of the conterminous United States. Results from the models can be used to compare nutrient sources and watersheds that contribute elevated nutrient loads to downstream receiving waters.   Includes supplemental material for the SPARROW model release, such as Fact Sheets, journal articles, and Congressional briefing.