There's also an excellent discussion of various methods with R code
here:
https://dewey.dunnington.ca/post/2019/bathymetry-lake-volume-estimation-using-r/
On Wed, Dec 6, 2023 at 8:52 AM Sarah Goslee wrote:
>
> Hi,
>
> As already mentioned, this is a great topic for R-sig-geo, where you'd
>
Hi,
As already mentioned, this is a great topic for R-sig-geo, where you'd
probably get specialist answers like the lake morphology package
https://cran.r-project.org/web/packages/lakemorpho/index.html which is
explicitly designed for this kind of question.
Sarah
On Tue, Dec 5, 2023 at 11:13 PM
A raster is just a matrix of elevations. Each element of that matrix has a
horizontal area. If you subtract that elevation from a reference elevation and
zero out all negative values then you are left with a bunch of rectangular
parallelopipeds of varying height. Add those heights up and
Dear Bert;
Thank you for your reply. The reservoir is not cylindrica. This is the
table I have created from the data extracted.
Maybe there is a way to get the relation between Elevation, Area and Volume
to get the elevation at a specific Volume.
Sincerely
valueArea Height
The volume of a polygon = 0. Polyhedra have volumes.
This may be irrelevant, but if the lake is cylindrical == constant cross
sectional area at all depths, then height doubles when the volume does and
vice versa. Otherwise you have to know how area varies with height or use
more sensible
Dear all;
I am trying to calculate the volume of a polygon shapefile according to a
DEM raster. I have provided some codes at the end of this email.I dont know
if the codes are correct or not. Following this, I have another question
too.
I want to know if the volume of the reservoir rises or
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