ICM currently allows 4 infiltration types in 2D infiltration types:

-fixed
-Horton
-Constinf
-GreenAmpt

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.

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.

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.

It would be great to add PMP (probable maximum precipitation) calculator to XPSWMM and XPSTORM

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 pollutograph

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.

XPRAFTS to be updated to allow for a minimum of 5 sub catchments per node like XPSWMM does.

Ability to work with some of the new data from the Australian BOM.