Modified Puls Routing, also known as storage routing or level-pool routing, is a commonly used reach (channel) routing method in HEC-HMS. Modified Puls Routing is based on continuity equation. In…
Modified Puls Routing, also known as storage routing or level-pool routing, is a commonly used reach (channel) routing method in HEC-HMS. Modified Puls Routing is based on continuity equation. In…
A culvert is a closed conduit with a relatively short length connecting two open channels or water bodies. From a hydraulic analysis perspective, usually a culvert does NOT have too…
For unsteady state 1D and 2D HEC-RAS models, initial conditions must be set up appropriately to not make the model crash or become unstable at the beginning of the modeling.…
The hydraulic opening width (area) of a skewed bridge is less than its unskewed value, which in turn would adversely impact the bridge hydraulic performance. The skew angle is defined…
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…
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…
RAS Mapper of HEC-RAS 6 has a set of terrain modification tools to modify original terrain. This post is the third of the 3 post series for terrain modification using…
RAS Mapper of HEC-RAS 6 has a set of terrain modification tools to modify original terrain. This post is the second of the 3 post series for terrain modification using…
RAS Mapper of HEC-RAS 6 has a set of terrain modification tools to modify original terrain. Basically the terrain modification tools creates vectors (lines/simple shapes/polygons) with elevations assigned to them…