About SurvSupport.com

SurvSupport is an open, interactive map of public surveying and geodetic infrastructure — starting with NTRIP correction stations and growing to include tide gauges, CORS networks, and other precision positioning resources worldwide.

What we show

We continuously pull live station lists from public NTRIP casters and other geodetic data sources. Each marker on the map represents a real station you can connect to or reference. Networks are color-coded so you can quickly identify which service each station belongs to.

NTRIP

NTRIP (Networked Transport of RTCM via Internet Protocol) is the standard protocol for streaming GNSS correction data over the internet. RTK (Real-Time Kinematic) receivers use these corrections to achieve centimetre-level positioning accuracy. Public casters like RTK2Go, EUREF-IP, and regional networks provide free access to surveyors, researchers, and precision agriculture users.

Browse by network or country

Besides the map, crawler-friendly lists live at Networks and Countries. Each network page has a mountpoint table and a link back onto the map.

Coming soon

• Live tide gauge readings from NOAA CO-OPS and other agencies
• CORS / permanent GNSS station networks
• DGPS maritime beacon coverage
• Seismic and geophysical monitoring stations

Data freshness

Each network has its own refresh schedule (typically 30–120 minutes). The Last updated timestamp shown in every station popup is the time we last successfully fetched that network's source table — all times are UTC.

About the name

SurvSupport is short for survey support, spelled with a v — the same “Surv” surveyors know from field software like SurvCE. If someone told you about “surf support” or “surfsupport.com” for NTRIP and RTK base stations, this is the site they meant.

Open and free

SurvSupport aggregates publicly available data from public casters. We do not host any correction streams ourselves. All map tiles are provided by OpenStreetMap contributors and CARTO.