Questions tagged [hydrology-toolset]
A set of tools for hydrologic analysis with ESRI's ArcGIS Desktop software. The Spatial Analyst extension is required.
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Different watersheds for same area because of "burned streams"
Im trying to analyse where water is flowing which rains down to my project area. This is the DEM I have (my project area is bordered blue, the red marks are my pour points):
I learned from another ...
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How to add a column in one shapefile that is the sum of values in another shapefile?
I am trying to calculate a weighted average CN value for 500 drainage area catchments (S1-S500).
I have one file named "DA" which has S1-S500.
Name Total_Area
S1 1.5
S2 0.8
........
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Multithreading single function using ArcPy with ArcMap
I am using ArcMap 10.5.
The problem
I have a huge DEM raster (more than 6 GB in size). I need to process this raster through Hydrology toolset in ArcGIS (fill, flow direction, flow accumulation...etc)....
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Streams from outlet using QGIS
I have an outlet (point inside a polygon, see the image below) and using global mapper I have computed the basin leading to this outlet.
I want also to get the main water channel of this basin in ...
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Deriving Stream-Velocity out of a DEM
I'm using Arc GIS Toolbox Hydrology...everything works fine. Moreover, it is possible to derive the potential stream velocity just out of the DEM? Informations about rainfall, infiltration, hydraulic ...
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How to remove negative values from a created HAND model
I have used ArcGIS to create a HAND (height above nearest drainage) using an SRTM DEM.
However, some small portions have negative values in the model which is supposed to have zeros as the minimum ...
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How can we extract the stream order branch?
Actually I am new to GIS, so I don't know much about technical terminology.
I have extracted a river network but now have a problem in distinguishing the branch order of stream (from order 1 to 2, 2 ...
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