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Do you need a quick base map for your GIS, CAD, or web services? AGRC provides several multiscale base map and imagery service options that deliver prerendered base map tiles to your platform as fast as your internet connection will allow.

Imagery plus overlay

If you want to use the AGRC base maps, you’ll need to have a free account and a quad word key created for you.

AGRC’s cloud-based server, Discover, provides imagery and base map services in an OGC standard WMTS and WMS in the Web Mercator WGS84 projection (wkid: 3857). Discover offers over 20 services that are free to use (but a few services do require a signed license agreement).

Each cache consists of around 3 to 17 million 256-pixel square tiles ranging from 15G to over 200GB. These caches are standardized on a subset of the Google, Microsoft, and esri scale levels that apply to our state. The update schedule will keep you in the loop as to when the tiles were last updated. If you would like to download imagery, visit the aerial photography data page.

The Services on Discover

Terrain: This base map highlights elevation and features mountain peak elevation labels, contour lines, and locations of ski resort locations and other places of interest.

AGRC maintains a very minimal cache called Lite. It is very muted in color and does not distract from data overlaid on top of it.

Up next is the Imagery base map. This tile set shows the Google aerial photography. For licensing reasons, you will need to qualify for an organizational account login to use to this base map.

An exciting offering (that we call squiggles and dots internally) is a service called Overlay. This is a transparent set of tiles that displays styled roads and place-names. This can be overlaid on data for reference. Combining this with Imagery can create a desired Hybrid effect.

We have the Color Infrared, Address Points, and Topo caches. The Color Infrared is a neat way to look at vegetation, while the Topo cache contains all of the USGS Quad Sheets. The Topo cache displays the most relevant quad sheet (i.e., 250K, 100K, or 24K) depending on your scale. The Address Points cache is a fast way to view around 2.5 million address points.

There is also historical NAIP and Google imagery.