The MassGIS Base Map, available in OLIVER, is a general-reference map that contains a variety of features, all from the MassGIS database. The map was designed by MassGIS staff in ESRI's ArcMap 10.2.1 software and was cached (pre-rendered) for the Web using ArcGIS Server 10.2.1. The caching process greatly speeds the display of all basemap features.

In OLIVER, the map actually is "constructed" with base features (terrain, natural features) that may be added from the Basemaps menu in the lower right corner of the OLIVER interface, and overlaid with three cached "tiled layers". Features and their data sources include:

MassGIS Base Map - Basemaps Menu

MassGIS Base Map - Tiled Layers Menu

The three other cached map layers, available from the "Tiled Layers" menu in OLIVER are as follows:

See the individual data layer pages (links above) for dates of each dataset.

The legends for the basemap and tiled layers (click on legend image to view larger size):


Last Updated 3/21/2014