[OpenRoads 2022 Release 1] Drainage And Utilities: Can You Compute Runoff Coefficients In Manually Delineated Drainage Areas?https://communities.bentley.com/products/road___site_design/f/geopak-inroads-mx-openroads-forum/246407/openroads-2022-release-1-drainage-and-utilities-can-you-compute-runoff-coefficients-in-manually-delineated-drainage-areasI&#39;ve just started to analyze hydrology data in OpenRoads Designer, and I&#39;m wondering if there is a way to compute a composite runoff coefficient in a catchment I drew by hand rather than one auto-delineated by an inlet node. I know this is relativelyen-USTelligent Community 12RE: [OpenRoads 2022 Release 1] Drainage And Utilities: Can You Compute Runoff Coefficients In Manually Delineated Drainage Areas?https://communities.bentley.com/thread/769310?ContentTypeID=1Mon, 12 Jun 2023 19:06:36 GMT6dad98f5-dbc9-4c4d-a9ba-e9da8dc6aa8e:9f088ea0-b681-4f7b-9d10-d28d1383d9c4Parker Welch<p><a href="https://youtu.be/aLTlHxke3hQ?list=PLnJUnxLwu_N67mfsglQQ-Zllajd8MZjHc">https://youtu.be/aLTlHxke3hQ?list=PLnJUnxLwu_N67mfsglQQ-Zllajd8MZjHc</a></p> <p>Bentley just sent me this video through a support ticket, and this is exactly what I was looking for. If anyone else is trying to do this, update to ORD 10.12!</p> <p>You can also do this in 10.11 by making sure your surface polygon land use shapes are set to use the catalog runoff C adjustment method after assigning C values to your land uses in your engineering library, but it&#39;s a little harder to work with than 10.12</p><div style="clear:both;"></div>