Interactive Maps

Nontidal Anadromous Fish Spawning Map

A​s part of an effort to provide mapping tools for environmental disturbance permit decisions and mitigation, spatial datasets were developed for maps of anadromous fish spawning locations in nontidal reaches of streams where American Shad, Hickory Shad, Alewife, Blueback Herring, White Perch, and Yellow Perch spawn in Maryland. Chronological impervious surface estimates are at the 8- and 12-digit scale and impeded stream map layers are also available on this interactive map.​

Dredged Materials Map

Locate dredged material sites for all Maryland w​aters.

Shellfish Waters of the State of Maryland (iShel​lfish App)

The purpose of the application is to use interactive maps to aid an individual who is on the waters of the state in determining the individual’s location, in real time, relative to: Aquaculture Leases, Demonstration Leases, Fixed fishing devices - registered pound net sites, Natural clam or oyster bars​, Oyster sanctuaries, Public shellfish fishery areas, SAV Protection Zones, Yates Bars or...Any other data areas that the Department deems relevant.

Natural Resources Near You

Interactive Natural Resources Near You map allows you to find state parks, hunting and fishing locations, water access points and water trails near you.

Eyes on the Bay

Maryland Chesapeake and Coastal Bays water quality maps, satellite imagery, and water quality data.

Free Maps and Trail Guides

These maps of public lands managed by the Department of Natural Resources are in Geo-Spatial-PDF format. Click here to download, print or use these maps with other 3rd party mobile applications at no additional cost.

Frequently Asked Questions about Maryland Department of Natural Resources Trail Guide Maps.

Maryland Interactive Trails Atlas

Recreational Trail Atlas GraphicThe Department of Natural Resources trail atlas includes information on important recreation resources within Maryland, from State land and water trails and water access sites to public lands including State Parks, forests, wildlife management areas and others.

Features include the ability to select data layers and base maps, search capabilities for specific sites and locations. The Atlas is available for trip planning only and is not intended for navigation as on the ground verification continues.

Maryland Interactive Recreation Atlas

Maryland Recreational Atlas Graphic The Recreation Atlas highlights various recreation activities available throughout Maryland. A one stop shop for individuals looking for both indoor and outdoor recreational opportunities. The atlas includes hiking, biking, fishing, water access, and many outdoor and indoor sport venues such as swimming, boxing, martial arts, basketball and many others.


MERLINLogo.pngMaryland's Environmental Resources and Land information Network (MERLIN) allows users to produce a custom map of any location in Maryland, including their choice of base maps and data layers.
Provided by the Maryland Department of Natural Resources

GIS and Map Data​

DISCLAIMER: All information is provided as a visual representation only and is not to be used as a legal or official representation of legal boundaries. By using these maps you agree to hold the Department of Natural Resources harmless of any liability, damage or loss resulting from your use of the said maps.​​​​​​​​​