This mapping tool displays each lease and the corner coordinates associated with the lease. All latitude and longitude coordinates are provided in a degrees, minutes and seconds format and the datum is NAD83 HARN. It may be necessary to convert the coordinates into a different format before entering the information into your GPS unit or change settings on your GPS unit to match this format.

Please note: Leases are issued on a continuous basis throughout the commercial oyster season. A list of leases that have been issued since the beginning of oyster season will be maintained on the left side-bar of this tool in chronological order. You may also download a printable version of the lease coordinates from this tool. If you have questions about the location or status of a shellfish aquaculture lease or would like to request a copy of the printable version of the coordinate document, please contact the Aquaculture and Industry Enhancement Division at (410) 260-8648.

It is a shellfish harvester’s responsibility to be aware of the locations of these leases. Violations of shellfish laws may result in criminal conviction, fine and/or a suspension or revocation of your tidal fish license by a Court or the Department of Natural Resources. Harvesting oysters from a leased area by a person other than the leaseholder or the leaseholder’s official designee is illegal and may result in immediate oyster authorization revocation proceedings under Natural Resources Article, Section 4-1210, Annotated Code of Maryland. Thank you for your cooperation.


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Click on any map layer to retrieve more information about that feature. To obtain a printable image of the map, click the dropdown arrow next to the printer icon and select portrait or landscape to print the current view of the map. When the printer icon changes to say PRINTOUT, click that to be taken to the image (this can be very slow - be patient!).

All latitude and longitude coordinates are provided in a degrees, minutes and seconds format and the datum is NAD83 HARN.

For lease questions, please contact:

Aquaculture and Industry Enhancement Division
Fishing and Boating Services
Tawes State Office Building
580 Taylor Avenue E-4
Annapolis, Maryland, 21401
Office: 410.260.8648

For technical questions regarding the webmap itself you may contact:

Brett Greenfield
Fishing and Boating Services
Tawes State Office Building
580 Taylor Avenue B-2
Annapolis, Maryland, 21401
Office:410.260.8318
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Latitude:
Deg. Min. Sec. N.
Longitude:
Deg. Min. Sec. W.