Hello,
I am simulating a storm water network in SewerGEMS platform. In my model there is pond which spreads over a large area.
My question is, does the software calculate the rainwater getting over the pond surface area? or do we have to assigned a dummy catchment which is equal to Pond surface area and connect with the pond with high runoff coefficient (0.9)?
Thanks
Nishadi
I recommend posting this question in this forum: (+) OpenFlows | Water Infrastructure Forum - OpenFlows | Water Infrastructure - Bentley Communities.
For more information about the Road and Site design tools, visit the Road and Site design WIKI at: http://communities.bentley.com/products/road___site_design/w/road_and_site_design__wiki
Thanks Holly, mistakenly published in another forum.
Nishadi,
SewerGEMS will not automatically have the rain fall over the pond area.
So, indeed, if you have a pond with a significant top surface area and need to account for rain that falls directly into the pond, lay out a separate catchment overlapping the pond catchment and set the pond as the "outflow element". Or, to help prevent difficulties associated with overlapping polygons, consider laying out a schematic catchment (for example hold CTRL and click to lay out a pentagon shaped catchment) with a user defined area set equal to the pond top surface area, and direct that to the pond.
I see you asked the same question in August: Runoff generated over a waterbody
Regards,
Jesse DringoliTechnical Support Manager, OpenFlowsBentley Communities Site AdministratorBentley Systems, Inc.
Thanks Jesse.