• Organization: District of Columbia
• Updated: 2022-04-09T00:00:00.000Z

The spatial resolution of DC orthophotos must be resampled to 1 meter in some areas as determined by the Secret Service. In 2017, the redaction boundary was expanded around the US Capitol and a...

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• Organization: Department of the Interior
• Updated: 2024-09-10T00:00:00Z

This polygon dataset represents the tidal water shoreline of the Chesapeake Bay and its tributaries. It is based primarily on shoreline data with horizontal positional accuracy of +/- 2meters...

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• Organization: National Oceanic and Atmospheric Administration, Department of Commerce
• Updated: 1984-04-06T00:00:00.000+00:00

The National Oceanic and Atmospheric Administration (NOAA) has the statutory mandate to collect hydrographic data in support of nautical chart compilation for safe navigation and to provide...

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