Kind of a shot in the dark, but I know some of you guys collect them.
For a GPS thing, I need to find a NGS (or Portland) benchmark somewhere in a heavily wooded area, preferably close to Portland and easy access but still at least 1/4 mile of walking to get in or out and must be able to actually find it. The Willamette Stone would probably be good if it were just a little farther off the road and had bigger trees.
I have this reference map which shows a ton of them, but I don't have time to goose chase ones that are hard to locate.
https://arcg.is/LSCmX
Need to Find a Benchmark in the Woods
Need to Find a Benchmark in the Woods
- Michael
Re: Need to Find a Benchmark in the Woods
There is one on the summit of Mt Tabor
Re: Need to Find a Benchmark in the Woods
This BM in Forest Park may offer the quarter mile hike:
LATITUDE 45 34 33.27494(N)
LONGITUDE 122 46 16.21671(W)
East Zigzag Mountain's would, but it's snow season.
LATITUDE 45 34 33.27494(N)
LONGITUDE 122 46 16.21671(W)
East Zigzag Mountain's would, but it's snow season.
Re: Need to Find a Benchmark in the Woods
Here's a link to my map if you missed it
https://arcg.is/LSCmX
I know where they are supposed to be but already many are missing, I've been unable to find most of the ones I've looked for down by the airport, so I have my doubts about the rest.
Thanks!
https://arcg.is/LSCmX
I know where they are supposed to be but already many are missing, I've been unable to find most of the ones I've looked for down by the airport, so I have my doubts about the rest.
That link gives me a server error. Tabor is not forested enough for my purposes. Forest Park is though.
Do you know if that benchmark is there and easy enough to locate?
Thanks!
Last edited by aiwetir on November 26th, 2018, 5:34 pm, edited 1 time in total.
- Michael
Re: Need to Find a Benchmark in the Woods
Don't know but the map report was recent, iirc.
Re: Need to Find a Benchmark in the Woods
I noticed some on the dead end roads in that neighborhood just north of there on Springville Rd, those are probably good.
Thanks
- Michael
- Waffle Stomper
- Posts: 3707
- Joined: May 28th, 2008, 10:03 pm
Re: Need to Find a Benchmark in the Woods
"When we try to pick out anything by itself, we find it hitched to everything else in the Universe." - John Muir
Re: Need to Find a Benchmark in the Woods
that's where i got the data for my maps...Waffle Stomper wrote: ↑November 26th, 2018, 8:16 amHave you tried the NOAA site map with satellite view?
https://www.ngs.noaa.gov/datasheets/
- Michael
Re: Need to Find a Benchmark in the Woods
Why do you need to find a BM? As people have pointed out there's plenty out there, especially if you count PLCC's as well. Are we doing your surveying homework for you?