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…
To apply the HEC-18 Equation 6.2 (Figure 1) to calculate the live-bed contraction scour depth, the bed material particle D50 fall velocity needs to be determined to estimate the coefficient…
Hydraulic Toolbox is a powerful tool to design riprap protection for channel banks, culvert outlets, and bridge scour countermeasures. This post is to focus on bridge pier and abutment scour countermeasure…
A skewed bridge will reduce its hydraulic opening width (area) and mostly likely its hydraulic performance and thus in HEC-RAS a skewed bridge must be modeled properly by accounting for…
USACE HEC released HEC-RAS 6.0 in December 2020 and in this new release, a bridge can finally be modeled in a 2D domain using a geometry editor similar to 1D…