These data represent the most current roadless area defined by National Forest Proclamation boundaries.
Roadless areas are described here as a combination of designated Wilderness Areas from PAD-US (CBI Edition) version 2.0 and roadless areas identified by forest in the datasets described below:
- Sierra NF and Sequoia NF, Suitable lands for National Wilderness Preservation System (NWPS)
- Lassen NF, Proposed Wilderness Areas
- Stanislaus NF and El Dorado NF, USFS Roadless Areas
- Plumes NF and Tahoe NF, The Wilderness Society TNF 2017 Roadless Inventory
These data were aggregated together into a single Roadless Areas file and identified by National Forest using the National Forest Proclamation boundaries.