Often it is necessary to re-condition a DEM by burning streams or raising walls to force a watershed to be delineated with known streams or boundaries (example: NHD streams or…
Often it is necessary to re-condition a DEM by burning streams or raising walls to force a watershed to be delineated with known streams or boundaries (example: NHD streams or…
The earth surface is irregular and curvy. To describe the earth surface mathematically, an ellipsoid is defined to approximate the bumpy earth surface, or more accurately a datum based on…
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…
Hydrologic Soil Group Data (A, B, C, and D) is an important soil property which impacts the soil infiltration rates and runoff potential. Soils were originally assigned to hydrologic soil…
RAS Mapper of HEC-RAS Version 6 has some basic but useful GIS functions to complete some GIS operations and spatial analyses common to HEC-RAS modeling, although it could not replace…