Download: DavisStormSystemExample.zip

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. 


This example model is a small 2D rain-on-mesh dataset that includes a Pipe Network for central Davis, CA. A short duration high intensity hypothetical rainfall is applied to the 2D mesh and drop inlets in the Pipe Network drain water from the surface throughout the city and direct flow to the pump house on the downstream side of the network. A pump station with three pumps on the downstream end then pulls water from the downstream most pipe node and pumps it to the the outfall channel, a separate 2D area to the north.

The terrain in this model is the USGS Original Product Resolution which is ~3.3ft cell size. This resolution is fine enough that the it captures the crown of the roadways which can be important for small scale detailed urban modeling. Breaklines were placed down the center of major streets to capture the crowns, and ensure appropriate flow paths down the major roadways. The Pipe Network in the model was developed starting with GIS data for the trunk lines in the city. Then, more detail was added to the Pipe Network where needed such as lateral lines and drop inlets at intersection locations. However, the stormwater network is still skeletonized (trunk lines only) in places where additional detail was not warranted. 

This model is not a detailed study level model. However, several areas of improvement to increase the accuracy and applicability of this model could include:

  • Further refinement of the 2D mesh to capture more streets and other terrain features that control surface water flow in the city
  • Addition of a fine resolution Manning's n layer that includes surface streets, buildings, etc.
  • Addition of a fine resolution infiltration and percent impervious layer to account for precipitation losses
  • More resolved Pipe Network geometry to include more lateral lines and drop inlets