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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: 23 | Catalog Last Checked: July 07, 2026 at 08:09 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: 6 | Catalog Last Checked: August 02, 2025 at 04:55 AM -
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: 5 | Catalog Last Checked: August 02, 2025 at 04:31 AM -
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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This is a MD iMAP hosted service. Find more information on http://imap.maryland.gov. These data map hub - corridor - and gap elements within the green infrastructure. The Green Infrastructure...
Search relevance: 1.00 | Views last month: 3 | Catalog Last Checked: May 14, 2026 at 11:55 PM -
This is a MD iMAP hosted service layer. Find more information at http://imap.maryland.gov. This data layer contains the Province-level physiographic subdivisions of Maryland in ArcGIS format. The...
Search relevance: 1.00 | Views last month: 3 | Catalog Last Checked: August 02, 2025 at 04:08 AM -
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: 3 | Catalog Last Checked: August 02, 2025 at 04:00 AM -
Hydrologic unit boundaries define the aerial extent of surface water drainage to a point. Hydrologic units through four levels were created in the 1970's and have been used extensively throughout...
Search relevance: 1.00 | Views last month: 2 | Catalog Last Checked: July 07, 2026 at 08:12 PM -
This is a MD iMAP hosted service layer. Find more information at http://imap.maryland.gov. This file of geologic unit polygons is for educational use. There are known errors and omissions. The...
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The Maryland coastal zone is comprised of the land, water and subaqueous land between the territorial limits of Maryland in the Chesapeake Bay, Atlantic Coastal Bays and the Atlantic Ocean, as...
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The Sensitive Areas Striped Bass dataset shows areas within Maryland's Coastal Bays that are significant for Striped Bass populations. This dataset shows seasonal use of certain areas of the bays...
Search relevance: 1.00 | Views last month: 2 | Catalog Last Checked: July 07, 2026 at 08:13 PM -
Although the State of Maryland has no natural lakes, it has an abundance of created lakes and ponds that are used for wildlife habitat, recreation, water supply, and other reasons. This digital...
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As defined in Maryland regulation, a pound net means a fixed entrapment gear consisting of: (a) A net body or crib measuring at least 16 feet long by 16 feet wide at the surface of the water with...
Search relevance: 1.00 | Views last month: 2 | Catalog Last Checked: July 07, 2026 at 08:09 PM -
This file (SWSUB8) is a statewide digital watershed file. It depicts the State with 138 separate watersheds each with an 8-digit numeric code. The file was created primarily for State and Federal...
Search relevance: 1.00 | Views last month: 2 | Catalog Last Checked: July 07, 2026 at 08:12 PM -
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,...
Search relevance: 1.00 | Views last month: 2 | Catalog Last Checked: July 07, 2026 at 08:12 PM -
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: 2 | Catalog Last Checked: July 07, 2026 at 08:10 PM -
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: 2 | Catalog Last Checked: July 07, 2026 at 08:10 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: 2 | Catalog Last Checked: July 07, 2026 at 08:13 PM
