Columbia Center Internet Map Services provide geospatial map data over Inernet connections. These services are fall into three broad categories:

Data Services are primarily for use as data layers in desktop GIS software applications such as ESRI Arc Explorer or ArcGIS. These services generally incorporate only one data theme or layer and are meant to be combined with other data.

Map Services may be used as data sources for desktop GIS software as well, however, they include more data layers and offer functionality that is useful when viewed in an ordinary web browser such as IE or FireFox.

Web Applications are Map Services that go further to deliver GIS functionality to over the Internet. They are designed to run in an ordinary web browser and deliver advanced GIS functionlaity generally targeted to a specific purpose. Web Applications are listed under their own tab on this website.

Columbia Center Data Services provide access to GIS data over the Internet. These services are designed to be ingested by desktop GIS Applications such as ESRI ArcGIS. The following data services are available:

Stratmap2 trans

Stratmap2 political boundaries

Stratmap2 hydro

stratmap2 hypso

NAIP 2004 digital orthoimagary

Texas Shaded Relief

Texas Analytical Hillshade

To access these services, you must have a GIS application that is capable of accepting map services as input. This includes most commercial GIS software a a few free viewers such as ArcExplorer. Many of these services are provided in WMS and KML format as well as ESRI ArcGIS Server. Please refer to your software documentation for details.

To access these services, select "GIS Servers" as the the source in your desktop software and enter "http://arcgis01.crgsc.org" as the URL. Once the connection is established, you will see all the services that are currently avialable.

Be sure to look at Web Applications under the Applications tab. Many Web Apps can be used as data layers in desktop GIS software as well.