Jump to content

Help identifying / finding info...


Recommended Posts

Any help identifying this marker:




My photo


This benchmark doesn't seem to be listed in the NGS database, from what I can tell. It 'should' (I think) be part of one of the 'Great Lakes Low Water Datums' listed here...




probably station #9063020, but the data sheets for the Great Lakes stations don't seem to be available online. The homepage for that station is here...




but again, no benchmark information. I'd suggest contacting them at co-ops.userservices@noaa.gov


I should 'disclaim' that this is just what I was able to hunt up and is kinda guesswork, but the peeps at that email address should be able to give a definitive answer.


(edit) Just as an additional note, the 7.5x7.5 USGS topo maps for that area haven't been updated since 1965, so that line is a dead end. The 'new' digital US Topo versions don't show benchmarks.

Edited by revent
Link to comment

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Create New...