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National Inventory of Phosphorus (v1, 8.30.19)

Published by U.S. EPA Office of Research and Development (ORD) | U.S. Environmental Protection Agency | Metadata Last Checked: August 02, 2025 | Last Modified: 2019-08-30
This is a project assessing the state of major input and outputs of reactive nitrogen (Nr) and phosphorus across the coterminous US at the HUC 8 scale for three snapshots of time (2002, 2007, and 2012).

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