I was given scanned pdf's of all of the USGS benchmark paper descriptions that the Rolla, MO office has scanned.?ÿ
These are in 15' quadrangles, and were previously available by calling the Rolla USGS office and asking for them. They are arranged by state and the 15' quad name. I realize that the 15' quad name is not always easy to find, but there is a document in the root of the ftp directory that explains how to find the 15' quad name and also briefly explains the data available.?ÿ
If your area is not available, do not complain to me, I am just offering these as I received them.?ÿ
I have made these available by ftp...(case sensitive)
ftp.terrasurv.com
login: USGSBM
password: USGS_Benchmark
Here is a map of what is available (according to the document but not checked). I note that a few from Wyoming and Montana are included but not shaded on the map.?ÿ
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Got it.?ÿ There was a security setting on my end that was interfering.
works for me from my phone and some other people logged in already and downloaded files. Try typing it in instead of pasting. Maybe there is a space at the end when you cut-and-paste
I dropped ftp.terrasurv.com into Windows Explorer address bar and the login window popped open. It worked that way. Only a few quads available in our state. I always wondered why NGS and USGS can't have a common repository. The USGS?ÿ bench runs around here begin and end on a NGS benchmark.?ÿ
I did put a limit on the number of logins available so you may have to try again later.?ÿ
You can find the USGS quad name by downloading/viewing an NGS data sheet for a point in the area of interest.
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@norm?ÿ
USGS data is not in a format that can be directly imported into the NGS integrated data base. Neither does it include all the data fields needed for inclusion. Even though USGS may have run levels originating and ending on NGS control they may not have included necessary checks on the BMs, may not observed them to any standard or specifications and may not have submitted the records in a form usable to NGS.
To see what sort of information acquires during their leveling see: https://beta.ngs.noaa.gov/datasheets/leveling-projects/index.html?ÿ
While working in some pretty remote areas I have found USGS monuments and contacted the folks in Rolla, MO about them. I have found significant errors in some instances including between ?ÿTT and ET points within a few kilometers of one another.
FWIW. One of my first experiences with GPS (late 1980s?) was connecting points in Newcastle, WY with control in Gillette, WY due to incompatibilities between USGS ??control? in the Newcastle area. This was a low-order survey and looks like it never made it into the NGSIDB.?ÿ
You can find the USGS quad name by downloading/viewing an NGS data sheet for a point in the area of interest.
An alternate way would be to google "USGS Store" and once at that site navigate on the map to your location. As a bonus you can download a pdf of the latest (and many historical) USGS quad map.?ÿ
I'm aware.?ÿ Seems like a poor excuse not to include "use at you own risk" marks that don't meet NGS strict specs on a separate layer in NGS data explorer. You would hope two fed agencies could figure something out. I'm sure it will happen when pigs fly. I contacted on line help chat person at USGS the other day seeking similar information as posted here. They didn't know anything about it even though I practically told them what building it is in. The USGS contact page runs a person in circles. I don't know who to call anymore.?ÿ
@geeoddmike That is the 7.5' quadrangle name on the data sheets, not the 15' quadrangle. The 15' quadrangles were common in the past when the mapping scales were smaller.?ÿ?ÿ
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http://employees.oneonta.edu/baumanpr/usgs62500/Z-Background.htm
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As I recall, the reason I was told that the USGS leveling was not included in the IDB is that there was no funding to keypunch all of the data as NGS did. It would be a massive undertaking as it was when NGS "digitized" all of their leveling data for the NAVD88 adjustment.?ÿ
On the issue of USGS data in the NAD86 adjustment, see NOAA Professional Paper 2 that indicates:
Thank you! ?ÿThis helped me out.?ÿ
