GIS nerds

[Mountainman]

Where would I find a Digital Elevation model for the state of MT to use in ARCGIS? I can find really small areas of MT but not the whole state that i could use.

[char]

Paging Telenater....

I had to stitch one together for Washington.....and then I needed a really fast computer.

[Mountainman]

Paging Telenater....

I had to stitch one together for Washington.....and then I needed a really fast computer.

Remember where you got the data from?

[Buzzworthy]

Where would I find a Digital Elevation model for the state of MT to use in ARCGIS? I can find really small areas of MT but not the whole state that i could use.

Call Electonic Data Solutions in Idaho, they are our reseller in the PNW/Montana. Google them for the number or pm me.

They have a few GIS guys. Possible place to start. Tell em you know me (real name) and they may be able to help. Tell em you are a student too, and bride em with a contact of one of your professors as a lead that may be interested in the Allegro.

[cololi]

http://nris.state.mt.us/gis/gisdatalib/gisDataList.aspx

scroll down about 2/3 rds of the way and they list some different scales of DEM's.

[char]

Remember where you got the data from?

UW has it on a harddrive stashed in a basement somewhere.

I'd bet that the geography department at a large Montana College would have it.

Or you could type "Montana digital elevation model" into Google, which will give you this metadata: http://mercury.ornl.gov/metadata/nbi.../statedem.html

Now all you need to is read through there and have them send you the CD with their DEM on it.

[Mountainman]

http://nris.state.mt.us/gis/gisdatalib/gisDataList.aspx

scroll down about 2/3 rds of the way and they list some different scales of DEM's.

GRRRRrr. why didn't i check the board sooner!! Just found that after searching forever!\

Thanks for the help everybody

[Telenater]

http://seamless.usgs.gov



Unfortunately, you'll have to download it in pieces and stitch it together.
That's the best source for seamless elevation data, but it is not what I'd call a good distribution system.

Remember, 1/3 arcsecond = 10m dem and 1 arcsecond =30m. I'd strongly advise against trying to use the 10m NED for the full state unless you have A LOT of computer at your disposal.

It's distributed in small (effectively randomly named) zipped GRID workspaces that'll need to be mosaiced and then reprojected (distributed in Geographic coordinate systems).

I had to do a lot of working around to make it work for just the Klamath River watershed. Let me know if you want suggestions for working with it, but remember that you must mosaic before you reproject (unfortunately).

[Lane Meyer]

I just recently got some MT DEMs from this site:

http://nris.state.mt.us/nsdi/nris/el10/dems.html

Be prepared to use ArcToolbox to get the DEMs into ArcMap. PM me if you get stuck.

[MT]

I have a couple of topo maps I could loan you. Would that help?

[Mountainman]

I have a couple of topo maps I could loan you. Would that help?

I'll take pictures of them and scan them in my computer.

thanks!

[Lane Meyer]

Umm, are you serious? Oh wait, a GIS joke! I get it! BWA!!!

(if you need DRGs, I can point you to those, too. They look neat draped over DEMs in ArcScene)

[Telenater]

I'll take pictures of them and scan them in my computer.

thanks!

Oddly enough, that's pretty similar to how the original 30m DEMs were created.

[Yeti]

Looks like you're all set and I'm a dollar short and late to the geekathon. There are plenty of fine datasets for MT online; hopefully you don't have to stich or scan.