What is the difference between USGS maps and Forest Service Maps?
United States Geological Survey (USGS) topo maps cover the entire country at two or three different scales. United States Forest Service (USFS) topo maps are only available in the 1:24K scale, and only for those quadrangles which contain Forest Service land. Some USGS topo maps have not been updated since the 1970’s. While the topography normally does not change much, man’s contribution to the landscape in terms of additional trails and roads has changed considerably for areas covered by some of these maps. The USFS had an internal need for more up-to-date maps, so they started a joint program with the USGS to update maps for the national forest areas. The USFS and the USGS signed an interagency agreement in August, 1993, that calls for the cooperative updated mapping of all Forest Service lands. These updated maps have proved so useful that they have been released to the public. MacTopos 3.0 makes them available to you for use with MacGPS Pro.
United States Geological Survey (USGS) topo maps cover the entire country at two or three different scales. United States Forest Service (USFS) topo maps are only available in the 1:24K scale, and only for those quadrangles which contain Forest Service land. Some USGS topo maps have not been updated since the 1970’s. While the topography normally does not change much, man’s contribution to the landscape in terms of additional trails and roads has changed considerably for areas covered by some of these maps. The USFS had an internal need for more up-to-date maps, so they started a joint program with the USGS to update maps for the national forest areas. The USFS and the USGS signed an interagency agreement in August, 1993, that calls for the cooperative updated mapping of all Forest Service lands. These updated maps have proved so useful that they have been released to the public.
