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Bill93

Another list of marks to find

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If you are looking for more search targets because you've pretty much exhausted your local area, you could try this list

https://www.ngs.noaa.gov/OPUS/view.jsp

 

This is a secondary list maintained by NGS, which accepts submissions of 4 hours+ of data from professional GPS units along with descriptive material and pictures. It takes much less effort than getting one into the main NSRS data base. This list includes submissions for the "GPS On Benchmarks" program which provides checks on GRAV-D.

 

There aren't a lot of them in my area. I've mentioned in other threads (e.g this) how I have been using a nearly antique professional GPS receiver, and now I've submitted a few sessions to this data base. The one I consider most important fills a gap in their coverage of stations having both old leveling data and GPS observations. I also did a check on a point submitted by DOT, one on a reset disk that probably isn't so important, and got a new point entered for a USGS disk I happened across that's in a very nice accessible place so others might want to use it.

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If you are looking for more search targets because you've pretty much exhausted your local area, you could try this list

https://www.ngs.noaa.gov/OPUS/view.jsp

 

This is a secondary list maintained by NGS, which accepts submissions of 4 hours+ of data from professional GPS units along with descriptive material and pictures. It takes much less effort than getting one into the main NSRS data base.

That's a cool idea, offering a way to provide up-to-date information about benchmarks without having to file a formal report. Having photos is very helpful too!

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