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@gmail.com (personal)
tea@terrapredictions.org (work)
1 (513) 739-9512 (cell)
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)
_______________________________________________
grass-user mailing list
grass-user@.osgeo
https://lists.osgeo.org/mailman/listinfo/grass-user
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.
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best regards
Helmut
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Sent from: http://osgeo-org.1560.x6.nabble.com/Grass-Users-f3884509.html