Officials Unveil New Mapping System at Mount Rushmore
The National Geodetic Survey launched a new mapping system using satellite data at a ceremony in South Dakota.
Updated on Oct. 20, 2026 in Geography
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The National Oceanic and Atmospheric Administration and the National Geodetic Survey have officially launched a modernized National Spatial Reference System. The announcement took place at Mount Rushmore National Memorial, coinciding with commemorations for America's 250th anniversary.
Why it matters
This system upgrades national mapping from ground-based measurements to a four-dimensional model driven by satellite and GPS technology. Improved accuracy in land surveying is essential for protecting property rights and managing public trust lands that fund education.
The system utilizes four-dimensional satellite and GPS-driven positioning to replace traditional ground measurements. This technical transition aligns with the 250th anniversary of the United States.
The players
Larry Rhoden
He is the Governor of South Dakota who proclaimed October 19, 2026, as Professional Land Surveyors Day.
National Oceanic and Atmospheric Administration
This federal agency is responsible for scientific research and stewardship of the oceanic and atmospheric environments.
National Geodetic Survey
This office defines and manages the National Spatial Reference System to provide the foundation for all positioning activities in the U.S.
South Dakota Society of Professional Land Surveyors
This organization advocates for the standards and professional interests of land surveyors operating within the state.
The details
The event highlighted the historical significance of land surveying, noting that three of the four presidents carved into Mount Rushmore—George Washington, Thomas Jefferson, and Abraham Lincoln—worked in the profession. The South Dakota Society of Professional Land Surveyors and the National Society of Professional Surveyors hosted the event.
Timeline
October 19, 2026: Ceremony held at Mount Rushmore National Memorial.
October 19, 2026: Professional Land Surveyors Day in South Dakota.
The Big Picture
The transition to the modernized National Spatial Reference System represents a shift toward higher-precision geospatial infrastructure. This upgrade replaces legacy ground-based benchmarks with a dynamic, satellite-based framework that integrates more seamlessly with modern digital technologies.
The transition to a more accurate, satellite-driven positioning system will provide clearer data for property boundaries and land management. These improvements could lead to more efficient infrastructure development and better oversight of lands that support public education.
The takeaway
Land surveying remains a foundational element of American infrastructure, connecting the nation's historical origins to modern technical standards. Accurate property data is essential for both individual homeowners and the state's public trust land management.
Further reading
For more on local mapping and terrain analysis, visit South Dakota Geography.
Source note: This article includes information reported by Kotatv.
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