National Inventoried Roadless Areas

Feb 26, 2013 (Last modified Apr 12, 2019)
This map service has been modified since it was imported
A map service, available on the www, that depicts the Inventoried Roadless Areas that were used in the Final Environmental Impact Statement (EIS) for the 2001 Roadless Area Conservation Rule. The EIS analysis team used this spatial data to assess the impacts of roadless area alternatives on Forest Service policies, use of the National Forests, and the surrounding environment. It was used for analysis in combination with national characterization layers, such as ambient human population, forest mortality risk to insects and diseases, current land cover types, and others. The data includes the entire lower 48 states and Alaska at a coarse resolution. The public also had a need to know where IRAs were located in their area and across the nation. For more information visit

Areas are symbolized based on categories for the Inventoried Roadless Areas: "Inventoried Roadless Areas where road construction and reconstruction is not prohibited", "Inventoried Roadless Areas where road construction and reconstruction is prohibited", and "Inventoried Roadless Areas that are recommended for wilderness designation in the forest plan and where road construction and reconstruction is prohibited".
Data Provided By:
US Forest Service Enterprise Map Services Program
Map Service URL:
Content date:
not specified
Contact Organization:
not specified
Contact Person(s):
not specified
Use Constraints:
US Forest Service Enterprise Map Services Program
Layer Type:
Currently Visible Layer:
All Layer Options:
Layers in this dataset are based on combinations of the following options. You may choose from these options to select a specific layer on the map page.
Spatial Resolution:
Other Information:
Time Period:
Layer Accuracy:
Attribute Accuracy:
FGDC Standard Metadata XML
Click here to see the full FGDC XML file that was created in Data Basin for this layer.
Original Metadata XML
Click here to see the full XML file that was originally uploaded with this layer.
This dataset is visible to everyone
Dataset Type:
External Map Service (ArcGIS)
Bookmarked by 2 Members , 4 Groups
Included in 1 Public Map , 11 Private Maps
Included in 1 Public Gallery

About the Uploader

Conservation Biology Institute

The Conservation Biology Institute (CBI) provides scientific expertise to support the conservation and recovery of biological diversity in its natural state through applied research, education, planning, and community service.