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-   -   Options for creating elevation maps for a farm? (https://www.thecombineforum.com/forums/31-technology/332795-options-creating-elevation-maps-farm.html)

jvw 06-23-2019 10:33 AM

Options for creating elevation maps for a farm?
 
What is the cheapest option to create elevation maps of the entire farm? I haven't kept up with the Agopen GPS /opengrade/RTK etc. Is that now a capability at a reasonable price, then just drive a grid with a quad?

I can find bits and pieces of accurate Lidar or similar data for free for some areas, but never have found any for my area. Buying it would add up in a hurry. Has anyone found a source that covers this area(Clearwater County in Central AB)

What about drones, how cost effective would it be to buy the drone and the hardware and programs to do it that way?

Any other options?

BrianTee 06-23-2019 10:42 AM

Quote:

Originally Posted by jvw (Post 3341343)
What is the cheapest option to create elevation maps of the entire farm? I haven't kept up with the Agopen GPS /opengrade/RTK etc. Is that now a capability at a reasonable price, then just drive a grid with a quad?

I can find bits and pieces of accurate Lidar or similar data for free for some areas, but never have found any for my area. Buying it would add up in a hurry. Has anyone found a source that covers this area(Clearwater County in Central AB)

What about drones, how cost effective would it be to buy the drone and the hardware and programs to do it that way?

Any other options?


I guess the next logical question is what will you be using the maps for and in what data format? Compatibility with other software?

jvw 06-23-2019 10:55 AM

At this point, I just want maps I can look at to establish slopes and low points to make future plans. Ideally be able to draw a path such as google earth allows and follow the contours. I don't currently have any equipment set up to use the info. I check elevations with rotary level, then I work freehand then verify with rotary laser level.

wvca 06-23-2019 12:20 PM

there isn't anything that will give you 'useful' data, and is super cheap ..
you really need rtk to make it useful, because vertical heights are poor with waas, and that does cost ..
lidar is an option, but rtk and doing a grid with your quad, or tractor while you are doing some seeding, or whatever, is a much better choice ...
especially if you are thinking of using it for drainage ..

New_Farmer 06-23-2019 12:22 PM

The data you seek is here:
https://www.altalis.com

BrianTee 06-23-2019 01:43 PM

Quote:

Originally Posted by New_Farmer (Post 3341375)
The data you seek is here:
https://www.altalis.com


A 25m Dem isn't gonna cut it for drainage, unless i missed where accurate maps are on the site.

New_Farmer 06-23-2019 04:30 PM

I guessed you missed all the Lidar data then.

BrianTee 06-23-2019 10:03 PM

Quote:

Originally Posted by New_Farmer (Post 3341445)
I guessed you missed all the Lidar data then.


Still only 15 m. They don't specify the grid for Lidar, but probably pretty poor for grade work.

custom_farmer 06-24-2019 01:01 AM

This probably doesn't do you any good seeing as you're asking the question, but, I know my Ag Leader stuff plots elevation automatically as I travel a field. Kinda interesting sometimes to overlay a yield map on a elevation map. I only bring this up thinking you may already have some elevation data logged without knowing it.

adsinaus 06-24-2019 01:16 AM

I think the problem is as Warren (@wvca) is saying accuracy from WAAS isn’t good enough for drainage design etc. ie it’ll give you an indication, but not suitable for surveying and planning.


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