Map services are maps made available to the web using ArcGIS.
A map is created in ArcMap and published as a service to an ArcGIS Server site.
Internet or Intranet users can then use the map service in web applications, ArcGIS for Desktop, ArcGIS Online, and other client applications.
If you simply need to view the data in a service and get information about individual features, a map service will suffice.
If you need to access the features within a service in ArcMap and change symbology, perform complex queries, add data to geoprocessing tools, and download data, then a feature service is required.
A feature service allows users to execute queries to get features, change symbology, apply and change labeling, and perform edits that can be applied to the server if editing is enabled.
Data from relationship classes and nonspatial tables can also be queried and edited using feature services.
The USDA Forest Service makes no warranty, expressed or implied, including the warranties of merchantability and fitness for a particular purpose, nor assumes any legal liability or responsibility for the accuracy, reliability, completeness or utility of these geospatial data, or for the improper or incorrect use of these geospatial data. These geospatial data and related maps or graphics are not legal documents and are not intended to be used as such. The data and maps may not be used to determine title, ownership, legal descriptions or boundaries, legal jurisdiction, or restrictions that may be in place on either public or private land. Natural hazards may or may not be depicted on the data and maps, and land users should exercise due caution. The data are dynamic and may change over time. The user is responsible to verify the limitations of the geospatial data and to use the data accordingly.