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
Thanks Jesse.
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 Holly, mistakenly published in another forum.
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