The USFS Roadless Inventory (IRA) dataset contains all the National Forest Inventoried Roadless Areas.

The IRA data was originally submitted to Geometronics Service and Technical Center (GSTC) by all the national forests through their Regional Office for the Forest Service's Roadless Area Conservation Initiative. The data was consolidated at the GSTC and used the Draft Environment Impact Statement. Between the draft and final states of the Environmental Impact Statement, the data was updated by the forests to reflect any corrections to Inventories Roadless Areas that were based on their existing forest plan. The data was also supplemented to include Special Designated Area information and to include Inventories Roadless Areas with Special Designated Areas. The data was resubmitted to the GSTC on July 21, 2000 for consolidation and the completed coverage was used in the Roadless Area Conservation Final Environmental Impact Statement. IRAs are based on completed forest plans, forest plans in revision where the agency has established an inventory (this information should be available in Appendix C of most forest plans) or other assessments that are completed and adopted by the agency. RARE II information was used in cases where a forest does not have a more current roadless inventory that was established using RARE II information.

The native spatial reference for this dataset is UTM Zone 12N, NAD83 (0.01 meter coordinate precision). There are no constraints or warranties with regard to the use of this dataset. Users are encouraged to attribute content to: State of Utah, SGID. The dataset is maintained by the United States Forest Service.

Comments, questions, compliments, or concerns can be directed to: