Skip to main content
Question

Duplicate ESRI Create Watersheds tool in FME ?


simid
Contributor
  • Contributor

Hi all

Trying to generate watersheds based on input points and a DEM. The ESRI Create Watersheds tool does what I need but I haven't been able to figure out how to do it in FME. Any pointers?

Inputs: DEM + Points

Output: Watershed areas per point

ESRI tool https://doc.arcgis.com/en/arcgis-online/analyze/create-watersheds.htm

GUID-4DE64CF6-2A02-46F6-8AE4-4D9227AAB71C-webThank you

9 replies

gazza
Contributor
Forum|alt.badge.img+6
  • Contributor
  • July 27, 2021

This isn't going to be easy to do with FME unless anyone has done it before and can share their work. However the two articles listed under 3D Analysis here might help. https://community.safe.com/s/article/how-do-i-do-that-in-fme


simid
Contributor
  • Author
  • Contributor
  • July 27, 2021
gazza wrote:

This isn't going to be easy to do with FME unless anyone has done it before and can share their work. However the two articles listed under 3D Analysis here might help. https://community.safe.com/s/article/how-do-i-do-that-in-fme

Thanks.. Came across that and went down a rabbit hole without any success... Hoping someone has a solution.


alexlynch3450
Contributor
Forum|alt.badge.img+14

Not a remote sensing master, but i created a workspace that extracts lake polygon from raster imagery....I think that's what you were asking for...? also not a master in hydrology.

Essentially, I extracted pixels in band 3 that were in range from 0 to 45--based on the logic that bands higher in electromagnetic spectrum tend to be absorbed by water, therefore rendering pixel value near 0.

All you need is (1) known point x,y within lake wanting to extract and (2) polygon around region of interest.

 

cheers,


simid
Contributor
  • Author
  • Contributor
  • July 29, 2021
alexlynch3450 wrote:

Not a remote sensing master, but i created a workspace that extracts lake polygon from raster imagery....I think that's what you were asking for...? also not a master in hydrology.

Essentially, I extracted pixels in band 3 that were in range from 0 to 45--based on the logic that bands higher in electromagnetic spectrum tend to be absorbed by water, therefore rendering pixel value near 0.

All you need is (1) known point x,y within lake wanting to extract and (2) polygon around region of interest.

 

cheers,

Really interesting process there. Has given me some ideas but unfortunately I can't adapt it to what I'm doing. I'm wanting to calculate the "uphill" catchment boundary. Not sure how to explain it but i know the ESRI and Global mapper tools work well. Will keep at it and report back.


alexlynch3450
Contributor
Forum|alt.badge.img+14
simid wrote:

Really interesting process there. Has given me some ideas but unfortunately I can't adapt it to what I'm doing. I'm wanting to calculate the "uphill" catchment boundary. Not sure how to explain it but i know the ESRI and Global mapper tools work well. Will keep at it and report back.

add dem layer to the workflow.


mdohm
Participant
Forum|alt.badge.img
  • Participant
  • September 22, 2022

Hi @simid​ , did you find a solution on how to create watersheds/ catchment boundaries from a set of points in FME?


JennaKAtSafe
Safer
Forum|alt.badge.img+7
mdohm wrote:

Hi @simid​ , did you find a solution on how to create watersheds/ catchment boundaries from a set of points in FME?

Hi @mdohm​, do you have a DEM of the area you would like to build your watershed for?


mdohm
Participant
Forum|alt.badge.img
  • Participant
  • September 23, 2022
JennaAtSafe wrote:

Hi @mdohm​, do you have a DEM of the area you would like to build your watershed for?

Hi Jenna, thanks for picking this up. Indeed we have LiDAR data available that could be used to create a DEM.

 

 

 


JennaKAtSafe
Safer
Forum|alt.badge.img+7
JennaAtSafe wrote:

Hi @mdohm​, do you have a DEM of the area you would like to build your watershed for?

Though scenario specific, this article should help you get started with the process. I imagine you would need some trial and error with your scenario and your points that you want to use. I would recommend starting a new thread with your question.


Cookie policy

We use cookies to enhance and personalize your experience. If you accept you agree to our full cookie policy. Learn more about our cookies.

 
Cookie settings