[GRASS-user] Ideas for a rush project

[Helmut Kudrnovsky]

Thomas Adams-2 wrote
> Hello friends!
> 
> Things are not going well here in the U.S. on the environmental front.
> Among the things I have been working on is grassroots (no pun intended)
> environmental activism to stop the construction of 2, 42 inch (> 1 m)
> diameter, high-pressure natural gas pipelines which will be constructed
> through the Appalachian Mountains (steep slopes, folded, thrust-faulted,
> seismically active, with lots of Karst geology, etc...) an environmental
> nightmare.
> 
> The State of Virginia is allowing a final comment period ending June 1 on
> specified stream-crossing locations by the pipeline, many 1st order
> stream,
> totalling about 400 locations. Comments MUST be addressed on a
> site-by-site
> basis, dealing with erosion and sedimentation impacts on water quality.
> 
> I need to automate a process (thinking GRASS + R + knitr) to  develop
> individual reports for each location (I have IDs, lat-long values). What
> I'm asking for are suggestions of what I might include in my analyses that
> are site-specific, which I could automate through some scripting.
> 
> Since I have each stream-crossing location I could use that as a center
> for
> a GRASS region for the analyses. One thought is to try to calculate scour
> in the stream channels using, among many things, stream gradient; also
> potentially, erosion based on RUSLE, etc. Most areas are forested (which
> have been cut down) with agricultural lands.
> 
> Any high-level suggestions??
> 
> Best,
> Tom
> 
> -- 
> Thomas E Adams, III
> 1724 Sage Lane
> Blacksburg, VA 24060

> tea3rd@

>  (personal)

> tea@

>  (work)
> 
> 1 (513) 739-9512 (cell)
> 
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have a look into r.basin

https://grass.osgeo.org/grass74/manuals/addons/r.basin.html

which calculates some general upstream catchment characteristics at any
point location along a river.



-----
best regards
Helmut
--
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