SEAI (WA)

SEAI is a continuously operating reference station in Seattle, Washington, operated by NOAA's National Geodetic Survey as part of the NGS CORS network. It tracks GPS and GLONASS constellations and provides real-time RTK corrections and high-precision positioning data for static post-processing. Surveyors can use SEAI for cm-level accuracy in control surveys, mapping, and geospatial applications th