DGPS Site Status and Operating Parameters

Use the pull-down menu below to select the site in which you are interested. Outages, if any, will be shown below the site parameters after you select the site in which you interested.

The U.S. Coast Guard DGPS service is available for positioning and navigation. Users may experience service interruptions without advance notice. U.S. Coast guard DGPS broadcasts should not be used under any circumstances where a sudden system failure or inaccuracy could constitute a safety hazard.
Differential corrections are based on the NAD 83 position of the reference station (REFSTA) antenna. Positions obtained using DGPS should be referenced to NAD 83 coordinate system only. All sites are broadcasting RTCM Type 9-3 correction messages.

Please report DGPS problems or outages at our report-a-problem page. Thank you in advance.

Select a site from the following list: ** Select a Site ** Acushnet Albuquerque Angleton Annapolis Annette Island Appleton Aransas Pass Austin Bakersfield Billings Biorka Bobo Brunswick NAS Cape Canaveral Cape Hinchinbrook Cape Mendocino Cheboygan Chico Clark Cold Bay Dandridge Detroit Driver English Turn Essex Flagstaff Fort Stevens Greensboro Gustavus Hackleburg Hagerstown Hartsville Hawk Run Hudson Falls Isabela Kenai Kensington Key West Klamath Falls Kodiak Kokole Point Level Island Lincoln Lompoc Louisville Macon Medora Mequon Miami Millers Ferry Mobile Point Moriches Myton New Bern Omaha Pahoa Penobscot Pickford Pigeon Point Pine River Point Loma Polson Potato Point Pueblo Reedy Point Robinson Point Rock Island Saginaw Bay Sallisaw Sandy Hook Savannah Seneca Spokane St. Louis St. Paul (Alma) Sturgeon Bay Summerfield Tampa (Macdill) Topeka Upolu Point Upper Keweenaw Vicksburg Whidbey Island Whitney Wisconsin Point Youngstown