Search datasets
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This is a MD iMAP hosted service layer. Find more information at http://imap.maryland.gov. This file (SWSUB8) is a statewide digital watershed file. It depicts the State with 138 separate...
Search relevance: 1.00 | Views last month: 10 | Catalog Last Checked: August 02, 2026 at 11:06 PM -
This is a MD iMAP hosted service layer. Find more information at http://imap.maryland.gov. Bathymetry for Chesapeake Bay was derived from two hundred ninety-seven surveys containing 3 - 178 - 509...
Search relevance: 1.00 | Views last month: 7 | Catalog Last Checked: August 02, 2026 at 11:10 PM -
This is a MD iMAP hosted service layer. Find more information at http://imap.maryland.gov. Digital shoreline vectors derived from bromide or mylar copies of National Ocean Service T-sheets or...
Search relevance: 1.00 | Views last month: 7 | Catalog Last Checked: August 02, 2026 at 11:09 PM -
This data set represents the extent, approximate location and type of wetlands and deepwater habitats in the conterminous United States. These data delineate the areal extent of wetlands and...
Search relevance: 1.00 | Views last month: 5 | Catalog Last Checked: August 11, 2026 at 09:32 PM -
This is a MD iMAP hosted service. Find more information at http://imap.maryland.gov. These are shoal boundaries off the coast of Maryland created by the Maryland Geological Survey (MGS). No...
Search relevance: 1.00 | Views last month: 4 | Catalog Last Checked: August 02, 2026 at 11:08 PM -
The Maryland Artificial Reef Initiative (MARI) is a state-run initiative, managed by the Maryland Department of Natural Resources, aimed at developing new fish habitats in the Chesapeake Bay by...
Search relevance: 1.00 | Views last month: 4 | Catalog Last Checked: August 11, 2026 at 09:32 PM -
This is a MD iMAP hosted service layer. Find more information at http://imap.maryland.gov. In 2000 - the Maryland Geological Survey (MGS) was awarded a Coastal Zone Management grant to complete...
Search relevance: 1.00 | Views last month: 4 | Catalog Last Checked: August 02, 2026 at 11:06 PM -
The federal Lands data consists of land areas that are run and maintained by United States Governmental authorities. These files were created for planning purposes and should not be used as a...
Search relevance: 1.00 | Views last month: 4 | Catalog Last Checked: August 11, 2026 at 09:33 PM -
This is a MD iMAP hosted service layer. Find more information at http://imap.maryland.gov. These data map hub and corridor elements within the green infrastructure. The Green Infrastructure...
Search relevance: 1.00 | Views last month: 4 | Catalog Last Checked: August 02, 2026 at 11:07 PM -
This is a MD iMAP hosted service layer. Find more information at http://imap.maryland.gov. This file (SWSHED12) is a statewide digital watershed file. It was created primarily for state and...
Search relevance: 1.00 | Views last month: 4 | Catalog Last Checked: August 02, 2026 at 11:10 PM -
This is a MD iMAP hosted service. Find more information at http://imap.maryland.gov. This shapefile contains the outline of each Breeding Bird Atlas block for the entire state. A block"" is the...
Search relevance: 1.00 | Views last month: 4 | Catalog Last Checked: August 02, 2026 at 11:12 PM -
This is a MD iMAP hosted service layer. Find more information at http://imap.maryland.gov. Hydrologic unit boundaries define the aerial extent of surface water drainage to a point. Hydrologic...
Search relevance: 1.00 | Views last month: 3 | Catalog Last Checked: August 02, 2026 at 11:08 PM -
This is a data table, in comma-delimited, ASCII format, which contains information about selected physical properties, particularly grain size, of 4,255 surficial sediment samples from the...
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Dataset shows popular recreational fishing spots in the Maryland portion of the Chesapeake Bay. Fishing areas were derived from the publication "Anglers' Guide to the United States Atlantic Coast,...
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This is a MD iMAP hosted service layer. Find more information at http://imap.maryland.gov. These data provide restoration value rankings and ecological attributes associated with green...
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These datasets exist in raster and vector formats. The vector format was created from the SHA Shoreline file and graphic representations in the Lippson book (See bibliography below). These areas...
Search relevance: 1.00 | Views last month: 3 | Catalog Last Checked: August 11, 2026 at 09:33 PM -
This is a MD iMAP hosted service. Find more information on http://imap.maryland.gov. This map service contains the index grids for the historic color infrared and panchromatic digital orthophoto...
Search relevance: 1.00 | Views last month: 3 | Catalog Last Checked: August 02, 2026 at 11:10 PM -
The Maryland Artificial Reef Initiative (MARI) is a state-run initiative, managed by the Maryland Department of Natural Resources, aimed at developing new fish habitats in the Chesapeake Bay by...
Search relevance: 1.00 | Views last month: 3 | Catalog Last Checked: August 11, 2026 at 09:35 PM -
This is a MD iMAP hosted service. Find more information at http://imap.maryland.gov. The Sensitive Areas Horseshoe Crab dataset shows areas within Maryland's Coastal Bays that are significant for...
Search relevance: 1.00 | Views last month: 3 | Catalog Last Checked: August 02, 2026 at 11:12 PM
