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Map Types & Layers
• Base Data - DeLorme Base Data provides reference data for the world from zoom level
of 0 to a zoom level of 6. This base data is intended for reference when panning the
map from one area of interest to another. Be sure to download high detail Topo North
America maps for the US, Canada, and Mexico or Digital Atlas of the Earth data for other
parts of the world.
• Topo North America - Topo North America maps provide highly detailed topographic
data for the US, Canada, and Mexico extending to a maximum zoom level of 17. This map
type is at a scale of 1:24K and includes roads and trails as well as detailed land cover,
contours, and shaded relief. Topo North America also includes travel related points of
interest, geographic features, and DeLorme’s US State Atlas & Gazetteer points with
Unique Natural Features, Family Outings, and Outdoor Adventures each containing a
detailed description of the attraction.
• Digital Atlas of the Earth - The Digital Atlas of the Earth is DeLorme’s world topographic
dataset containing locations, geographic features, roads, rivers, lakes, land cover,
contours and shaded relief, seamlessly for any location on Earth. This is a 1:125K
dataset that can be downloaded in geographic regions containing multiple countries
through the Download Maps page.
• NOAA Nautical Charts - NOAA Nautical Charts are available at many detail levels
starting from zoom level 5 to zoom level 17, for the coastal waters surrounding the
US. Harbor, General, Coastal, and Off-Shore Charts show water depth, shoreline,
topographic features, aids to navigation, and other navigational information.
• USGS Quad Sheets - The USGS 7.5-minute/1:24,000 scale maps (in Alaska the maps are
1:63,360) are produced by the U.S. Geological Survey (USGS). The 7.5-minute quadrangle
maps are from the period 1947 to 2005.
• Color Aerial Imagery - Color Imagery is compiled from the USDA National Agriculture
Imagery Program (NAIP). Imagery has been sectioned up to match the USGS Quad
Sheets. All aerial imagery is natural color with 1-meter ground resolution. The imagery
was captured between 2004-2015.
• Public Lands - Public Land data is provided where applicable for US states. This data
represents Bureau of Land Management, Bureau of Mine Reclamation, State Trust and
other government owned public access land.