The example dataset provided is for demonstration purposes only and should not be used for other purposes. Some of the data within the dataset may have been altered specifically for the purpose of testing and demonstration and do not reflect actual conditions at the location. The example model has been simplified where possible for storage size and computation runtime purposes, and is not reflective of detailed study models. 

Download: NewOrleansMetroPipesExample.zip

The domain of this example dataset is the New Orleans metro area and it demonstrates the use of HEC-RAS Pipe Networks for urban modeling. The model contains a 2D mesh to which rainfall is applied, and a stormwater network drains the 2D mesh in combination with surface canals and pumps. The downstream boundary condition at Lake Pontchartrain is set at a constant stage.

This dataset was built by starting with the Urban Modeling Example Applications Guide Example dataset. The Urban Modeling Example leveraged the previous methodology for pressure pipe flow in HEC-RAS: lidded cross-sections with Preissman Slot. This new example dataset replaces the old methodology with Pipe Networks, 2D surface modeling, and precipitation.

Several major stormwater drainage conduits are included in this model, but it is highly skeletonized so much of the minor parts of the stormwater system are not modeled. The 2D area is not highly refined and much more detail would be required to have a study quality model. In addition, much more of the Pipe Network would need to be defined to drain the region properly. This model is not a detailed model and only serves as a basic example for using the new Pipe Network features for urban surface drainage.