2
votes
Accepted
Finding average depth of filled sink using ArcGIS Pro
If you want the average of all your sinks then you could convert your difference raster to a point dataset. Each pixel would become a row in your point dataset. Delete out zero difference and ...
- 42.6k
1
vote
Delineating large scale watershed?
For those reading this post in 2023, there is a free online tool that can quickly delineate large watersheds using high-resolution data from MERIT-Hydro and MERIT-Basins:
Global Watersheds Web App: ...
- 96
1
vote
Accepted
Calculating flow path length in R
You can use the R package {whitebox} to bring whitebox tools to your R session. The tool you might be looking for is called wbt_downslope_distance_to_stream. Below you will find an example how to ...
1
vote
Generate a very accurate mask showing where rivers and streams are using a DEM in QGIS
You most likely know that generating a flood map requires software like HecRas and someone with hydrology skills and training. Still, it is not uncommon for people to generate detrended surface ...
- 9,207
1
vote
Estimating flow direction using `terra::terrain()` without NA values at the border
Just to make use of the information provided in the comments by @Spacedman:
Chaining extend() and crop() around terrain() seems to do the trick in general to keep the information along the boundaries, ...
- 935
1
vote
Validating that the smallest channel extracted using ArcMap (Hydrology toolbox) from DEM is the first-order stream
The definition you quote is one such definition. Another way of thinking about why you use Strahler order is to simply give your river some sort of context of where it is in the network. That network ...
- 42.6k
Only top scored, non community-wiki answers of a minimum length are eligible