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Federal
Shoreline Mapping Program of Chicago Harbor, IL, IL0301 NGDA
National Oceanic and Atmospheric Administration, Department of Commerce —
These data provide an accurate high-resolution shoreline compiled from imagery of Chicago Harbor, IL . This vector shoreline data is based on an office interpretation... -
Federal
H11451: NOS Hydrographic Survey , Chicago and Vicinity, Illinois, 2005-07-25
National Oceanic and Atmospheric Administration, Department of Commerce —
The National Oceanic and Atmospheric Administration (NOAA) has the statutory mandate to collect hydrographic data in support of nautical chart compilation for safe...