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Lake Michigan: HYDRO (Polygons, Lines)

Published by Office of Response and Restoration | National Oceanic and Atmospheric Administration, Department of Commerce | Catalog Last Checked: May 17, 2026 at 05:15 AM | Dataset Last Updated: May 01, 2025 at 12:00 AM
The HYDROL data set contains vector lines and the HYDROP dataset contains vector polygons, both representing coastal hydrography used in the creation of the Environmental Sensitivity Index (ESI) for Lake Michigan. These data sets comprise a portion of the ESI data for Lake Michigan. ESI data characterize the marine and coastal environments and wildlife by their sensitivity to spilled oil. The ESI data include information for three main components: shoreline habitats, sensitive biological resources, and human-use resources.

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