A watershed average slope value is often needed in some hydrologic calculations, for example, Time of Concentration (TOC) estimation using NRCS Lag Time Method. The slope tool in AcrGIS or…
A watershed average slope value is often needed in some hydrologic calculations, for example, Time of Concentration (TOC) estimation using NRCS Lag Time Method. The slope tool in AcrGIS or…
TauDEM, developed by Utah State University is a set of tools to extract and analyze hydrologic information from topography as represented by a DEM. TauDEM is a set of standalone command…
In addition to delineating watersheds (drainage basins) upstream of one or more outlet points using WhiteboxTools' Watershed and UnnestBasins tools as illustrated in this post, WhiteboxTools has three other tools…
In this post, we explained how to import points in CSV format to QGIS to create a point shapefile, Similarly we can import points in CSV format with easting/northing or…
Points in CSV (comma separate values) format with Northing/Easting or Longitude/Latitude can be imported to QGIS and then be saved as a point shapefile. A point CSV file can also…
XPSWMM can load an image raster file as background to facilitate the drainage network creation. The image file needs to have a world file associated with so that XPSWMM is…
To perform 2D modeling using XPSWMM, a surface dtm file (*.xptin) needs to be generate first in XPSWMM. Another option to create a 2D surface is Reference a Grid File…
A big size raster file usually can be compressed to reduce its size. A lot of QGIS raster tools/commands have a built-in option to select a method to compress a…
Update: SAGA tools used to be included with QGIS installation, but starting from QGIS version 3.3x, QGIS dropped SATA package from its installation package. Now to use SAGA tools, QGIS…
Before adding geometry attributes (length, area, perimeter) to a line or polygon shapefile or X / Y Coordinates to a point shapefiles in QGIS, make sure the shapefiles are in…