Currently ICM isn't equipped with the tools to calculate the slope from an underlying ground model or 2D zone so this will need to be determined outside of the program. Can you include the ability for the program to calculate an average catchment slope based on the 2D mesh data or ground model within each sub catchment as an option if this has not been done outside of ICM?7 votes
As a user I need to represent and optimise for throttled discharge from subcatchments to node or conduit objects
Many cities are limiting maximum stormwater dicharge to drainage networks.
ICM should include more efficient modelling regarding
- Limiting stormwater flows from subcatchments via throttle requirement (e.g. 0-10 l/s*ha subcatchment), suggesting a new subcatchment data field.
- And quickly analyse how much stormwater (e.g. 10 m³ ) needs to be managed/retained on each subscatchment site via SUDS such as greenroofs, swales, etc. in order to meet and optimise throttle requirements.1 vote
Incorporate ARR2019 Initial Loss & Continuing Loss (IL/CL) infilitration type for 2D Infiltration surfaces
ICM currently allows 4 infiltration types in 2D infiltration types:
Australian Rainfall and Runoff 2019 talks default initial loss and continuing loss parameters for rural catchments, values for which which can be found in the BOM data hub.
A new 2D infiltration type which allows the simple IL/CL would allow 2D modelling more inline with ARR2019.11 votes
So that I can model situation part of the drainage area is not draining to the storm sewer system.1 vote
Have you attempted to do the import using the “Import as multi-part polygons” option on the Open Data Import Centre?
This is an idea from CDM Smith == I have an engine feature idea that has occurred to me at various times but never acted on. Today I was discussing an InfoWorks model with a junior colleague. It would clearly help us in this model to be able to allocate a subcatchment’s flows among several nodes, whether identically or according to specified proportions. In this case, we’re filling out an existing model that previously had all 10” and larger pipes in town to now include all the 8” as well, tripling the size of the model. We’re basing new subcatchments on census blocks. While that’s quite adequate for the model’s purpose, there are considerably fewer blocks than manholes. This isn’t an issue in the downstream parts of the model, but is particularly noticeable at the upstream-most catchments, where we have the choice of loading at the upstream end (potentially overloading the first few pipes), downstream (leaving dry pipes), or in the middle (causing both problems). Of course we could delete the most upstream pipes or further refine the subcatchments, but functionality that allowed allocation of a subcatchment among multiple inlets would improve the modeled load distribution without adding otherwise unneeded complexity.
This is an idea from CDM Smith == I have an engine feature idea that has occurred to me at various times but never acted on. Today I was discussing an InfoWorks model with a junior colleague. It would clearly help us in this model to be able to allocate a subcatchment’s flows among several nodes, whether identically or according to specified proportions. In this case, we’re filling out an existing model that previously had all 10” and larger pipes in town to now include all the 8” as well, tripling the size of the model. We’re basing new subcatchments…1 vote
There is the ability to drain a subcatchment laterally to multiple links in InfoWorks ICM, would this be a close enough representation? When looking to split subcatchment flows across multiple nodes, this is usually achieved by splitting the subcatchments so there is one available for each node which is to be drained to.
Australian flood modelling user have requested access to the WBNM hydrology method inside InfoWorks ICM. WBNM is one of the endorsed methods in Australian Rainfall & Runoff and large numbers of historical studies use this method.4 votes
InfoWorks ICM currently has the RAFTS Hydrological Routing method, but as a flood modelling user, I would like access to the RORB method as an option inside ICM. It is a similar method to RAFTS and would help endorsement of the software where RORB hydrology is a requirement.4 votes
It would be great to add PMP (probable maximum precipitation) calculator to XPSWMM and XPSTORM1 vote
At the moment it is not possible to set a pollutograph for subcatchments, and the modeller is obliged first to run the hydrology, export the hydrograph, re-import the hydrograph as inflow, and finally re-run with a pollutograph5 votes
As a user, I want to generate a synthetic hyetorapg (Chicago Storm) rainfall based on IDF relationship so these storms can be used in ICM.3 votes
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