Gila and Salt River meridian

Ty White, Associate Cadastral Engineer for the U.S. Bureau of Land Management (BLM), re-monumented the initial point on December 1, 1944.

On April 26, 1984, Paul L. Reeves and John P. Bennet re-monumented the original corner.

This re-monumentation was performed by staff from the BLM, members of the Arizona Professional Surveyors Society, and students at Phoenix College.

The initial point was added to the National Register of Historic Places (listing #02001137) as of October 15, 2002.

For the 1984/2006 marker, handheld GPS units give a reading of 33° 22.631′ N latitude and 112° 18.366′ W longitude due to the specific geoid used.

Initial point of the Gila and Salt River Meridan
Marker of the initial point of the Gila and Salt River Meridan on Monument Hill in Avondale. The following is engraved on the round marker: U.S. Department of the Interior Bureau of Land Management. Initial Point of Establishment in 1865. Gila and Salt River Meridian, Arizona. Cadastral Survey. The rectangular marker states the following: Dedicated to all land owners in Arizona by the Arizona Professional Land Surveyors originally set by A. B. Gray in 1851 .
Map of Gila Valley, Arizona USGS indicating Gila and Salt River initial point, meridian and baseline