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Palmer Hydrological Drought Index (PHDI) values for selected Chesapeake Bay watersheds

Published by U.S. Geological Survey | Department of the Interior | Catalog Last Checked: August 01, 2026 at 04:34 AM | Dataset Last Updated: August 18, 2020 at 12:00 AM
This dataset contains values of the Palmer Hydrological Drought Index (PHDI) for annual and seasonal periods from 1985-2012. Values are derived from data based on National Climatic Data Center (NCDC) climate divisions, of which there are 344 in the U.S.

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