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Revision of National Index of Watershed Integrity

Published by U.S. EPA Office of Research and Development (ORD) | U.S. Environmental Protection Agency | Metadata Last Checked: April 21, 2026 | Last Modified: 2018-07-16
Datasets contain original and revised Index of Watershed Integrity (IWI) and Index of Catchment Integrity (ICI), as well as sub-components that were used to develop the indices and water quality data used to revise and/or evaluate the indices. This dataset is associated with the following publication: Johnson, Z.C., S. Leibowitz, and R.A. Hill. Revising the index of watershed integrity national maps. SCIENCE OF THE TOTAL ENVIRONMENT. Elsevier BV, AMSTERDAM, NETHERLANDS, 651: 2615-2630, (2018).

Resources

1 resource available

  • https://gaftp.epa.gov/EPADataCommons/ORD/NHDPlusLandscapeAttributes/NHEERL/WED/IWI_revision.zip

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