Riprap is widely used and considered as a desirable type of revetment in the United States. It consists of a layer of natural or man-made rock/stone placed on bedding and/or…
Riprap is widely used and considered as a desirable type of revetment in the United States. It consists of a layer of natural or man-made rock/stone placed on bedding and/or…
Update 1: SAGA tools used to be installed automatically with QGIS, but starting from QGIS version 3.3x around the year of 2022, QGIS dropped SATA package from its installation completely.…
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…
A raster file is a matrix of predefined cells (pixels) with certain number of rows and columns. The level of detail represented by a raster depends on the cell (pixel)…
Time of concentration (TOC) is an important hydrology parameter which represents the time required for surface runoff to travel from the most hydraulically remote point (normally divide or ridge) in…
Whitebox Tools (WBT) is an advanced geospatial data analysis platform developed by Whitebox Geospatial, Inc. WBT contains plenty of tools to process various types of geospatial data for H&H analysis. WBT can…
To model infiltration loss within 2D domain for a Rain-on-Grid (RoG) HEC-RAS model, a land cover layer and a soils layer needs to be generated first and then an infiltration…
In HEC-RAS 6.0, users have the option to import either raster landcover files or vector landcover files to create a land cover layer which will then be used to associate…
This post (3 of 3) is an instruction of combining Land Cover Raster file and HSG Raster file to create a CN raster file for calculating an area-weighted average CN…
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…