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Approximate Regional Groundwater Divide on Long Island, New York, April-May 2016

Published by U.S. Geological Survey | Department of the Interior | Metadata Last Checked: January 27, 2026 | Last Modified: 2020-08-25T00:00:00Z
This groundwater divide feature was approximated from and interpolated water table raster for Long Island, April-May 2016. Generally, the highest altitudes of the water table were used to draw the groundwater divide, which implies the groundwater flow direction. The feature is presented in Sheet 1 of Scientific Investigations Map 3398.

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