Concrete Pillar Monuments 
Building Mount Monuments (click to enlarge)
The Wisconsin Department of Transportation (WisDOT) is currently testing and troubling shooting several facets of the Wisconsin Continuously Operating Reference Station (WISCORS) network before the system is operational. Issues being addressed are as follows:
Presently, 23 installations have been built and are streaming data into WisDOT servers. Web development is completed and awaits final approval. Field testing continues throughout the region of WISCORS. Upon completion of the testing and trouble shooting, the system will be operational. Because of the uniqueness in developing WISCORS within the WisDOT, the learning curve has taken longer than expected, thus resulting in a rather nondefinitive turn on date. Staff is working on the system full time to make WISCORS available to you as soon as possible.
Registration will be handled through WisDOTs website. There will be no fee initially to use the system for the remainder of 2008. Possible charges might be invoked on January 1, 2009. If there are user fees, costs would likely be around $500 per year per rover with collected funds applied towards upgrades and replacement of GPS hardware and software.
We will continue to post updates as received from WisDOT as they become available along with the path to WisDOTs website.National Geodetic Survey (NGS)
The NGS coordinates two networks of continuously operating reference systems (CORS) that provide GPS carrier and code range measurements in support of 3-dimentional positioning activities throughout the United States.
National CORS Network
Users can apply CORS data to position points at which GPS data have been collected. The CORS system enables positioning accuracies that approach a few centimeters relative to the National Spatial Reference System, both horizontally and vertically.
Cooperative CORS Network
The Cooperative CORS Network consists of GPS base stations whose data are freely disseminated by cooperating organizations. NGS provides a link from its web site to that cooperating organization, however the site coordinates must be consistent with the National Spatial Reference System.
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