| Applies To | |||
| Product(s): | Bentley SewerGEMS, Bentley CivilStorm, Bentley PondPack, Bentley SewerCAD | ||
| Version(s): | 08.11.XX.XX | ||
| Original Author: | Mark Pachlhofer, Bentley Technical Support Group |
How can I find the total volume from a hydrograph?
In the storm and sewer products there is no totalzing flow meter like in the water products, so you have to use the method below to find the total volume out of a pond:
*This example find the total volume of flow in gallons per minute.
1) Go to Analysis > Calculation Options and double click on the calculation option that has the red check mark on it. Change the output increment to 1 minute, so it generates 1 minute time steps. If you're using cfs as your flow unit change the output increment to seconds.
2) Right click on the catchment area or pond and choose "data table". Scroll down to hour 11 then left click and hold to drag your cursor down the column to highlight the flows for the time step you're analyzing. Press CTRL + C to copy the information to the clip board and paste it to Excel. Use the sum function to add up the flows.
3) Take the sum and divide by 60 to get the total volume for that time period.
To find the total volume out of a catchment use the "Volume(Total Runoff)" property.