STATE SURVEY 9 6 1969 — NGS TU1659 — Kapolei, US

This triangulation (trig) station is part of the NGS horizontal control network, which establishes the geodetic framework for surveying and mapping across the United States. Located near Kapolei on the island of Oahu, Hawaii, at coordinates 21.36597°N, 158.06071°W, this benchmark serves as a reference point for local surveys and spatial positioning work throughout the Hawaiian Islands. Trig stations of this type were historically established to provide precise horizontal control via triangulation methods. Modern surveying professionals rely on such monumented points to verify equipment calibration, validate survey measurements, and establish datum connections across project areas. Documentation and periodic verification of these control points remain essential for maintaining the integrity of Hawaii's geodetic infrastructure and ensuring consistency across surveying activities in the region.

Sign in to submit a verification from the field.

No verifications yet. Be the first to check this point!