Groundcheck now checks Maryland properties for mapped Wetlands of Special State Concern. These are wetlands that receive added state attention because they support rare, threatened, or endangered species or contain unique habitat.
Maryland says these wetlands receive protections that include a 100-foot buffer from development. That makes a nearby mapped wetland relevant even when the parcel line does not cross the wetland polygon itself.
What the Maryland source provides
Maryland iMAP publishes a statewide polygon layer for Wetlands of Special State Concern. The Maryland Department of Natural Resources supplies the public map, while the Maryland Department of the Environment identifies and regulates these wetlands.
The service exposes a wetland type and mapped polygon. Its metadata says the layer was last updated in August 2017. Groundcheck shows that date in the report because later designations, boundary revisions, and field findings may not appear.
Why this check differs from the national wetland screen
Groundcheck already checks the U.S. Fish and Wildlife Service National Wetlands Inventory. That national layer helps identify mapped wetland and water features, but it does not tell you whether Maryland classifies a wetland as a Wetland of Special State Concern.
The Maryland layer adds state regulatory context. A match can change where you place buildings, roads, utilities, stormwater facilities, grading, and other disturbance. It also tells you to involve Maryland regulators before relying on a preliminary site plan.
How Groundcheck runs the screen
Groundcheck first checks the saved parcel boundary for direct intersections. It then asks the public Maryland service for additional mapped wetlands within 100 feet of the parcel. The report separates direct overlap from wetlands found only within the buffer distance.
When a parcel boundary is unavailable, Groundcheck runs a clearly labeled 100-foot search around the saved property point. It keeps that result moderate because one point cannot represent the full parcel. Exact parcel or buffer hits receive high concern and include the returned wetland polygons on the report map.
How to follow up on a match
Treat a match as a reason to confirm the wetland and buffer before acquisition, design, clearing, grading, or permitting. Compare the mapped area with the likely project footprint, access route, utilities, drainage work, and stormwater design.
Contact the Maryland Department of the Environment for current regulatory guidance. A wetland professional can delineate field conditions, and a surveyor can relate confirmed boundaries to the parcel and proposed work.
- Confirm whether the state still identifies the wetland as a Wetland of Special State Concern.
- Request current guidance on the 100-foot development buffer.
- Map the likely limits of disturbance, access, utilities, and stormwater work.
- Review other state, federal, and local wetland or waterway requirements.
What a clear result cannot prove
No mapped match does not prove that the property has no wetlands or wetland restrictions. The public layer dates to 2017, mapped boundaries can differ from field conditions, and other wetlands remain subject to separate state, federal, or local rules.
Groundcheck provides an early screen, not a wetland delineation, jurisdictional determination, permit decision, or legal boundary survey. Use the result to decide what needs closer review before you commit money to a project.
Use the new layer
Check the property you are considering
Groundcheck combines this source with parcel details and other available national, state, and local layers.
Start a property check See every Groundcheck data layerGroundcheck provides early public data screening, not a legal, engineering, surveying, environmental, planning, permitting, or buildability determination. Verify important findings with the responsible agencies and qualified professionals.