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Questions tagged [basin]

a geomorphological term, meaning an extent or an area of land where all surface water from precipitation converges to a single point at a lower elevation.

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Basin Delineation using R

I am trying to get the polygon of a basin boundary using R. I got a 7.5 arcsec DEM that I download from this page: https://topotools.cr.usgs.gov/gmted_viewer/viewer.htm I look through a lot of ...
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Can QGIS produce a Stage Storage Plan?

I work for an engineering firm, and my question to the forum is: Can QGIS produce a stage storage plan for multiple drainage basins? I am attaching an image of what I am talking about. Currently, we ...
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Getting higher stream number for lower order stream in ArcGIS Desktop?

The fourth order stream is showing greater stream number then third order stream?
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How to create an inlet drainage basin layer

Using a point layer of 8,375 inlets and a DEM, how do I create an inlet drainage basin layer with contiguous basins, each delineating water drainage for and into each inlet? I used an integer DEM, ...
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Extract polygon from stream line

I would like to delineate the polygon of a basin from an already delineated stream work. In the example, I want to extract an approximate polygon from the selected stream network in yellow without ...
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How to calculate the distances to outlet along the flow path ?

I have created these raster files for a river basin: DEM Flow Direction Flow Accumulation I like to genereate a layer how it is shown in the picture below. I need the values for the distances from ...
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The resulting values are not what they indicate? [closed]

I am using ArcMap 10.3. When I create a watershed, using the Watershed tool in the Hydrology tool set, I am receiving values that should really be representing the number of water splitting lines, ...
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987 views

Seeking outline/boundary (shapefile) of Ganges river basin? [closed]

I'm looking for an outline/boundary (shapefile) of the Ganges river basin. Where can I find this?
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Does r.stream.basin still exist? GRASS-QGIS2.18.7

So I'm following steps in another topic that seems to date to January of this year and is exactly what I want to do, here's the link: Get drainage basin of a polygon and at one of the last steps in ...
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drainage basin for whole lake QGIS 2.18.7

I am currently facing a problem. Over the past week, I have been initiated to hydrology within the GIS environment and have finally successfully generated water basins (using the GRASS r.water.outlet) ...
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1answer
769 views

Selecting point to obtain water basin leading to it

For the past few days, I have been working on building a watershed model including drainage basins and find that I am not looking for a global watershed and basin distribution, I am looking to ...
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Drainage basins ignoring lake

This is my first time writing in this forum and I hope this question offers some quality of information easing a solution. Here goes. I am new in analyzing hydrology with DEMs and I have followed ...
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QGIS Multi-Basin Delineation (Pour-Point) Hydrology

I'm working on a QGIS plugin and struggling to find some existing QGIS processing functionally I could leverage. I need to replicate multi-basin delineation using pre-defined pour points. Specifically,...
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Expression into the raster calculator to invert DEM

I've made a DEM from first pass LiDAR data which I want to invert and run watershed segmentation and basin delineation over in order to hopefully extract tree canopy outlines and heights - I'm newish ...
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Basin creation GRASS vs. flow direction

I have a strange behaviour in QGIS with GRASS tools. I am trying to create basins in the alp region and use he SRTM3 data. As I can see on the flow direction raster the SRTM3 data seems to act nice: ...