This data displays the approximate location of wind resource areas. It is intended for use in small-scale mapping applications. This dataset is not intended for use in scientific, engineering, or large-scale mapping applications where precise location data is necessary. USGS Data Series 817 and the WPRS database were used to determine the appropriate location of wind resource area polygons. The polygons in this shapefile are larger than the actual land area physically occupied by the wind turbines. Polygon edges may extend up to 13 kilometres in straight-line distance from any single turbine within the wind resource area. Other parts may only extend 200 meters from any single turbine. The USGS Data Series provides an excellent resource for turbines mapped up to 2014, whether active or decommissioned. It is useful in determining the accurate location of turbines in conjunction with WPRS data on particular wind projects to rule out turbines within respective counties which are not part of a wind resource area.