Streamer

Cartography, maps, navigation, GPS and more.
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forester
Posts: 324
Joined: March 21st, 2012, 9:03 am

Streamer

Post by forester » August 31st, 2013, 11:53 am

Streamer

I thought this was pretty cool. It doesn't have some of the smaller streams I am interested in, but it definitely has value.

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vibramhead
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Joined: November 15th, 2009, 10:52 am
Location: SW Portland

Re: Streamer

Post by vibramhead » September 1st, 2013, 7:36 am

That is cool, thanks.
Time spent hiking will not be deducted from your life.

GPS tracks on Wikiloc.

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retired jerry
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Joined: May 28th, 2008, 10:03 pm

Re: Streamer

Post by retired jerry » September 1st, 2013, 8:34 am

One thing that shows is divides between river basins

Like the Continental divide, or there's one that goes roughly along Oregon California border, and Salt Lake/Death Valley etc. is totally land-locked

Doesn't show the mini land locked basin in South central Oregon

Adventure Mapper
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Joined: October 18th, 2012, 7:37 am

Re: Streamer

Post by Adventure Mapper » December 12th, 2013, 11:52 am

I've attached a map of streams computed from LiDAR data overlaid on a USGS 7.5 minute topo map of Horsetail Creek. In the process of creating the map I can choose what to call "big enough" to be a stream. In this example I was looking for navigation landmarks not necessarily water.

My experience is that when I cross a computed creek line on my map there will be an obvious water course in the real world. Note that the line of Horsetail Creek on the USGS topo is inaccurate and over-generalized. When hiking off-trail in complex terrain such as the Columbia Gorge the accuracy and detail of LiDAR can be important.
Attachments
computed streams.jpg
streams computed from LiDAR data

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