It is industry best practice to split up the subcatchments in a model into their pervious and impervious areas when adopting the Laurenson (or RAFTS) runoff routing method ie U = 2 and U = 0. The current workflow to achieve this is to setup the model with 2 subcatchments representing the impervious and pervious surfaces within a subcatchment. Existing Innovyze software (ICM and XPSWMM/XPSTORM) provide the user the ability to split the area of a catchment up into a number of different runoff surfaces. A feature like this would be great to have for InfoDrainage.

Check foul and storm phases do not clash where they cross.

InfoDrainage - want to do Gully space calculations or assess capacity of different gullies.
can you add the gully design tool to InfoDrainage?

Importing EPASWMM5 files for US users would help to streamline the transition from SSA (you can export to SWMM5 from SSA)

Include the San Diego Modified Rational Method as a routing option in the simulation parameters, similar to how its been incorporated to InfoSewer and InfoSWMM

Please can you add an ability to manually adjust the order of Junctions and Connections as the tables quickly become difficult to follow. The automatic re-ordering seems to reset as soon as you make any changes!

It would be useful to have a central granular conveyance trench beneath permeable paving to avoid the need for overly deep sub base beneath the road / drive.

How do I transfer my drainage model to and from Site 3D?
In Micro Drainage the transfer is quite straight forward and although it isn't perfect, it is reasonably quick. There doesn't seem to be an obvious way of doing the same in InfoDrainage? Road and Drainage design is an iterative process so easy transfer is essential.

At the moment you can replace areas with Free Form outlines. It would be good if there could be an ability to add additional points or replace with an imported outline

Is there any news on civil 3d 2022 support (new version of Microdrainage / draw net)?

The output reports from Infordrainage, are not set to fit the page and as such, there is a lot of "white space" left on the outputs. At present, there are no formatting options to change this. It makes the drainage report look a bit untidy.

For MH tables and report outputs, it would be good to have an option to report chronologically, e.g. 1-30.
I understand it numbers them on the first Manhole built in the model however I think it would make more sense to go from shallowest to deepest, e.g. U/S to D/S. As is quite common in design additional MHs need to be incorporated further into the model due to clashes or change in direction etc, so it would be best if all outputs and MH tables followed the numerical order.

Just like in CAD DrawNet you can use the CAD tools to snap the points of the catchment areas to specific points, it would be useful to have a snapping tool built into the MicroDrainage program. It could be a simple tool so you can either put a new point of the area anywhere, or when you're close to a point of another area you can snap to that point. This would save going back and forth between MD and CAD.

The sizing calculator in the pond build pop-up enables one side lpe only.
There are now LLFAs that require level benck of at aleast 1.5 m width after 0.6 m depth in a basin.
It is currently not possible to use your calculator to establish such basin properties.
This would be useful.

It would be good to have an option in underground stormwater controls to have a separate option for exceedance level and Ground Level
By taking the exceedance level as GL, it makes the Long sections look distorted when in reality it is common for our designs to have circa. 1m+ cover from top of tanks/soakaways etc to ground level.

It would be great to have the option of providing an additional level of customisable detail which could be configured on MH Schedules.

As an example including practical details around the cover – contractors want to know and see more from a MH schedule when out on site.

Examples of details around the type of cover:
Cover Size
Opening Size
Recessed
Solid Top
Loading Class

Currently this level of additional detail is often added manually to MH schedules exported from software.

It would be very useful if there was a way for the true ground profile to also be exported on long sections. Currently, when exporting long sections from microdrainage, the true ground levels are only shown at manhole locations and a straight line is used to replicate ground level between the manholes. Could a 3D terrrain file possibly be loaded into microdrainage so that the true ground profile is shown when exporting long sections?

Add Tree Pits as a type of SuDS structure.

DSD import/export for MicroDrainage exists but HydroWorks is now dead. A more generic import/export would be beneficial for exchange of information with other drainage simulation packages and with GIS systems for existing networks; something similar to the import/xport functins in ICM would be ideal.