NTRIP/RTK Network Access by State

Below is a list of RTK Networks available state-by-state.  In some cases we have included instructions on signing up and connecting to a particular network.  While there may be multiple GNSS networks in a state, we will only mention state run networks in cases where they are available.  Otherwise we'll either mention E38 VRS network, or SmartNet which both cover nearly the entire USA.

E38 VRS Network - E38 VRS Netwrork offers excellent accuracy in the areas it covers, but it is not quite as widespread as SmartNet.  For situations where users spend most of the time in a particular region, it can work out great.  If the operating region is a cross many states than, it would likely not be the fits-all solution.  

SmartNet, SpiderNet and Trimble Pivot networks can connect to single base stations, or they can connect to a network or VRS mount point.  In that case multiple base stations are used and virtual base station sends corrections to your rover.  This can mitigate some errors caused with a long distance between the base and rover.  For instance if you are within a 5 mile radius of a base station, you likely will favor connecting to that base station, but as you move further away, a virtual base station will start to become more reliable. 

SmartNet also has a PPP tool which can work out better than OPUS because it uses more constellations.   

Alabama - AL CORS available for free, a SpiderNet network.

Alaska - Some coverage of the state by SmartNet.

Arizona - E38 VRS network has strong covereage in many aeras, but does not totally cover the entire state.

Arkansas - ARDOT RTN available for free, a Pivot network.  

California - CRTN available for free, a single baseline network.  E38 VRS network has strong covereage in many aeras, but does not totally cover the entire state.

Colorado - CRTN available for free, a single baseline network.  E38 VRS network has strong covereage in many aeras, but does not totally cover the entire state.

Connecticut - ACORN available for free, a Pivot network.

Delaware - E38 VRS network has strong covereage in many aeras, but does not totally cover the entire state.

Florida - FPRN available for free, a SpiderNet network.

Georgia - E38 VRS network has strong covereage in many aeras, but does not totally cover the entire state.

Hawaii - SmartNet.

Idaho - E38 VRS network has strong covereage in many aeras, but does not totally cover the entire state.

Illinois - E38 VRS network has strong covereage in many aeras, but does not totally cover the entire state.

Indiana - INDOT InCORS available for free, a Pivot network. 

Iowa - IaRTN available for free, a SpiderNet network.

Kansas - E38 VRS network has strong covereage in many aeras, but does not totally cover the entire state.

Kentucky - KYCORS available for free, a Pivot network.

Louisiana - E38 VRS network has strong covereage in many aeras, but does not totally cover the entire state.

Maine - MaineDOT CORS available for free, a Pivot network.

Maryland - E38 VRS network has strong covereage in many aeras, but does not totally cover the entire state.

Massachusetts - MaCORS available for free, a SpiderNet network.  

Michigan - MDOT CORS available for free, a SpiderNet network.  

Minnesota - MnCORS available for free, a Pivot network. 

Mississippi - GCGC RTN available for free, a Pivot network.

Missouri - MoDOT available for free, a Pivot network.

Montana - MTSRN available for a fee, a Pivot network.  E38 VRS network has strong covereage in many aeras, but does not totally cover the entire state.

Nebraska - E38 VRS network has strong covereage in many aeras, but does not totally cover the entire state.

Nevada - TURN GPS Network available for a fee, a Pivot network.  E38 VRS network has strong covereage in many aeras, but does not totally cover the entire state.

New Hampshire - E38 VRS network has strong covereage in many aeras, but does not totally cover the entire state.

New Jersey - E38 VRS network has strong covereage in many aeras, but does not totally cover the entire state.

New Mexico - E38 VRS network has strong covereage in many aeras, but does not totally cover the entire state.

New York - NYSNet available for free, a SpiderNet network.  

North Carolina - NC RTN available for a fee, a Pivot network.

North Dakota - E38 VRS network has strong covereage in many aeras, but does not totally cover the entire state.

Ohio - ODOT VRS available for free, a Pivot network. 

Oklahoma - E38 VRS network has strong covereage in many aeras, but does not totally cover the entire state.

Oregon - ORGN available for free, a SpiderNet network.

Pennsylvania - E38 VRS network has strong covereage in many aeras, but does not totally cover the entire state.

Rhode Island - MaCORS available for free, a SpiderNet network.

South Carolina - SCRTN available for a fee, a Pivot network.  E38 VRS network has strong covereage in many aeras, but does not totally cover the entire state.

South Dakota - E38 VRS network has strong covereage in many aeras, but does not totally cover the entire state.

Tennessee - TDOT GNSS Reference Network available for a fee.  E38 VRS network has strong covereage in many aeras, but does not totally cover the entire state.

Texas - E38 VRS network has strong covereage in many aeras, but does not totally cover the entire state.

Utah - TURN GPS for a fee.  E38 VRS network has strong covereage in many aeras, but does not totally cover the entire state.

Vermont -  VECTOR available for free, a Pivot network.  

Virginia - E38 VRS network has strong covereage in many aeras, but does not totally cover the entire state.

Washington - WSRN avialable, a Pivot network.  E38 VRS network has strong covereage in many aeras, but does not totally cover the entire state.

West Virginia - WVRTN available for free, a Pivot network.

Wisconsin - WISCORS available for free, a SpiderNet network.

Wyoming - E38 VRS network has strong covereage in many aeras, but does not totally cover the entire state.