Description:Data Source: BLM--compiled from data provided by each state office; Modified by TWS to have a common set of attributes and combine multi-part units into single units where unit number, unit name, and suitability are identical.
Data Vintage: May 2012.
Useful Info: The geographic extent of this data is 11 western states (WA, OR, CA, NV, UT, CO, AZ,NM, ID, MT, and WY). The data will only be visible when you are zoomed in to at least the fourth zoom level on the zoom slider bar. Once visible, this data can be viewed with reasonable confidence at even the highest zoom level.