GR PARK — NGS DI2784 — Kapolei, US

This triangulation station is part of the National Geodetic Survey's network, which establishes and maintains the geometric foundation for surveying and mapping activities throughout the United States. Located near Kapolei on the island of Oahu, Hawaii, at coordinates 21.33195° N, 158.02805° W, this trig point serves as a horizontal control reference for regional surveys and geographic data collection. The ellipsoidal elevation of 26.7 meters provides vertical reference information for this locality. Trig stations function as monumented ground control points that allow surveyors and cartographers to tie local measurements to the national geodetic datum. Verification and proper documentation of such benchmarks remain essential for maintaining survey accuracy, supporting infrastructure development, and ensuring consistency in geospatial data across Hawaii and adjacent areas.

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