Step 1: Open and Run Pre-development Model - Visual OTTHYMO

1. Open …\model\pond_sizing.voprj. To open the pre-development model, navigate to the Project Manager and double click scenario “Existing Conditions”.

The pre-condition schematic view will be displayed.

2. Run the simulation
Click the Run button located at the Simulation tab to open the Batch Run window. Notice that simulations have been created for each design storm.

Check off all the design storms added to the model to run them simultaneously. Click the Run button to run the model. Notice that a progress bar is given to show the progress and a message window is given upon the successful completion of the run.

Sizing a Pond Using the Route Reservoir Command

Step 2: Get Target Peak Flow from Pre-development Conditions